//
// Draw the track line with legend
//
private void crossHair(XYChart c, int mouseX, int mouseY)
{
//System.Threading.Thread.Sleep(500);
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Draw a vertical line and a horizontal line as the cross hair
d.vline(plotArea.getTopY(), plotArea.getBottomY(), mouseX, d.dashLineColor(0x000000, 0x0101));
d.hline(plotArea.getLeftX(), plotArea.getRightX(), mouseY, d.dashLineColor(0x000000, 0x0101));
// Draw y-axis label
string label = "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" + c.formatValue(c.getYValue(
mouseY, c.yAxis()), "{value|P4}") + "<*/*>";
TTFText t = d.text(label, "Arial Bold", 8);
t.draw(plotArea.getLeftX() - 5, mouseY, 0x000000, Chart.Right);
// Draw x-axis label
label = "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" + c.formatValue(c.getXValue(mouseX),
"{value|P4}") + "<*/*>";
t = d.text(label, "Arial Bold", 8);
t.draw(mouseX, plotArea.getBottomY() + 5, 0x000000, Chart.Top);
}
//
// Draw the differences between the track lines
//
void drawTrackDiff(XYChart c, Dictionary <string, double> log0, Dictionary <string, double> log1)
{
double x0, x1;
if (!((null != log0) && log0.TryGetValue("x", out x0) && (null != log1) && log1.TryGetValue("x", out x1)))
{
return;
}
// Two columns in the table
var leftCol = new System.Text.StringBuilder();
var rightCol = new System.Text.StringBuilder();
leftCol.Append("Change in x: ");
rightCol.Append(c.formatValue(x1 - x0, "{value|2}"));
// Iterate through all layers to draw the data labels
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
var dataSetName = layer.getDataSet(j).getDataName();
double v0, v1;
if (!(log0.TryGetValue(dataSetName, out v0) && log1.TryGetValue(dataSetName, out v1)))
{
continue;
}
leftCol.Append("\nChange in ").Append(dataSetName).Append(": ");
rightCol.Append("\n").Append(c.formatValue(v1 - v0, "{value|2}"));
}
}
string table = "<*block,bgColor=80ffffff,margin=4*><*block*>" + leftCol.ToString() +
"<*/*><*block,halign=right*>" + rightCol.ToString() + "<*/*><*/*>";
TTFText t = c.getDrawArea().text(table, "Arial", 10);
t.draw(c.getPlotArea().getRightX() - t.getWidth(), c.getPlotArea().getTopY(), 0x000000);
}
//
// Draw track line with data labels
//
private void trackLineLabel(XYChart c, int mouseX)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
double xValue = c.getNearestXValue(mouseX);
int xCoor = c.getXCoor(xValue);
// Draw a vertical track line at the x-position
d.vline(plotArea.getTopY(), plotArea.getBottomY(), xCoor, d.dashLineColor(0x000000, 0x0101));
// Draw a label on the x-axis to show the track line position.
string xlabel = "<*font,bgColor=000000*> " + c.xAxis().getFormattedLabel(xValue, "mmm dd, yyyy") +
" <*/font*>";
TTFText t = d.text(xlabel, "Arial Bold", 8);
// Restrict the x-pixel position of the label to make sure it stays inside the chart image.
int xLabelPos = Math.Max(0, Math.Min(xCoor - t.getWidth() / 2, c.getWidth() - t.getWidth()));
t.draw(xLabelPos, plotArea.getBottomY() + 6, 0xffffff);
// Iterate through all layers to draw the data labels
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// Get the color and position of the data label
int color = dataSet.getDataColor();
int yCoor = c.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
// Draw a track dot with a label next to it for visible data points in the plot area
if ((yCoor >= plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()) && (color !=
Chart.Transparent))
{
d.circle(xCoor, yCoor, 4, 4, color, color);
string label = "<*font,bgColor=" + color.ToString("x") + "*> " + c.formatValue(
dataSet.getValue(xIndex), "{value|P4}") + " <*/font*>";
t = d.text(label, "Arial Bold", 8);
// Draw the label on the right side of the dot if the mouse is on the left side the
// chart, and vice versa. This ensures the label will not go outside the chart image.
if (xCoor <= (plotArea.getLeftX() + plotArea.getRightX()) / 2)
{
t.draw(xCoor + 5, yCoor, 0xffffff, Chart.Left);
}
else
{
t.draw(xCoor - 5, yCoor, 0xffffff, Chart.Right);
}
}
}
}
}
//Main code for creating chart.
//Note: the argument chartIndex is unused because this demo only has 1 chart.
public void createChart(WinChartViewer viewer, int chartIndex)
{
//
// This example demonstrates creating a histogram with a bell curve from raw data. About
// half of the code is to sort the raw data into slots and to generate the points on the
// bell curve. The remaining half of the code is the actual charting code.
//
// Generate a random guassian distributed data series as the input data for this
// example.
RanSeries r = new RanSeries(66);
double[] samples = r.getGaussianSeries(200, 100, 10);
//
// Classify the numbers into slots. In this example, the slot width is 5 units.
//
int slotSize = 5;
// Compute the min and max values, and extend them to the slot boundary.
ArrayMath m = new ArrayMath(samples);
double minX = Math.Floor(m.min() / slotSize) * slotSize;
double maxX = Math.Floor(m.max() / slotSize) * slotSize + slotSize;
// We can now determine the number of slots
int slotCount = (int)((maxX - minX + 0.5) / slotSize);
double[] frequency = new double[slotCount];
// Count the data points contained in each slot
for (int i = 0; i < samples.Length; ++i)
{
int slotIndex = (int)((samples[i] - minX) / slotSize);
frequency[slotIndex] = frequency[slotIndex] + 1;
}
//
// Compute Normal Distribution Curve
//
// The mean and standard deviation of the data
double mean = m.avg();
double stdDev = m.stdDev();
// The normal distribution curve (bell curve) is a standard statistics curve. We need to
// vertically scale it to make it proportion to the frequency count.
double scaleFactor = slotSize * samples.Length / stdDev / Math.Sqrt(6.2832);
// In this example, we plot the bell curve up to 3 standard deviations.
double stdDevWidth = 3.0;
// We generate 4 points per standard deviation to be joined with a spline curve.
int bellCurveResolution = (int)(stdDevWidth * 4 + 1);
double[] bellCurve = new double[bellCurveResolution];
for (int i = 0; i < bellCurveResolution; ++i)
{
double z = 2 * i * stdDevWidth / (bellCurveResolution - 1) - stdDevWidth;
bellCurve[i] = Math.Exp(-z * z / 2) * scaleFactor;
}
//
// At this stage, we have obtained all data and can plot the chart.
//
// Create a XYChart object of size 600 x 360 pixels
XYChart c = new XYChart(600, 360);
// Set the plotarea at (50, 30) and of size 500 x 300 pixels, with transparent
// background and border and light grey (0xcccccc) horizontal grid lines
c.setPlotArea(50, 30, 500, 300, Chart.Transparent, -1, Chart.Transparent, 0xcccccc);
// Display the mean and standard deviation on the chart
c.addTitle("Mean = " + c.formatValue(mean, "{value|1}") + ", Standard Deviation = " +
c.formatValue(stdDev, "{value|2}"), "Arial");
// Set the x and y axis label font to 12pt Arial
c.xAxis().setLabelStyle("Arial", 12);
c.yAxis().setLabelStyle("Arial", 12);
// Set the x and y axis stems to transparent, and the x-axis tick color to grey
// (0x888888)
c.xAxis().setColors(Chart.Transparent, Chart.TextColor, Chart.TextColor, 0x888888);
c.yAxis().setColors(Chart.Transparent);
// Draw the bell curve as a spline layer in red (0xdd0000) with 2-pixel line width
SplineLayer bellLayer = c.addSplineLayer(bellCurve, 0xdd0000);
bellLayer.setXData2(mean - stdDevWidth * stdDev, mean + stdDevWidth * stdDev);
bellLayer.setLineWidth(2);
// No tooltip is needed for the spline layer
bellLayer.setHTMLImageMap("{disable}");
// Draw the histogram as bars in blue (0x6699bb) with dark blue (0x336688) border
BarLayer histogramLayer = c.addBarLayer(frequency, 0x6699bb);
histogramLayer.setBorderColor(0x336688);
// The center of the bars span from minX + half_bar_width to maxX - half_bar_width
histogramLayer.setXData2(minX + slotSize / 2.0, maxX - slotSize / 2.0);
// Configure the bars to touch each other with no gap in between
histogramLayer.setBarGap(Chart.TouchBar);
// Use rounded corners for decoration
histogramLayer.setRoundedCorners();
// Tool tip for the histogram
histogramLayer.setHTMLImageMap("", "", "title='{value}'");
// ChartDirector by default will extend the x-axis scale by 0.5 unit to cater for the
// bar width. It is because a bar plotted at x actually occupies (x +/- half_bar_width),
// and the bar width is normally 1 for label based x-axis. However, this chart is using
// a linear x-axis instead of label based. So we disable the automatic extension and add
// a dummy layer to extend the x-axis scale to cover minX to maxX.
c.xAxis().setIndent(false);
c.addLineLayer2().setXData(minX, maxX);
// For the automatic y-axis labels, set the minimum spacing to 40 pixels.
c.yAxis().setTickDensity(40);
// Output the chart
viewer.Chart = c;
// Include tool tip for the chart
viewer.ImageMap = c.getHTMLImageMap("clickable");
}
//
// Draw the track box with legend
//
private void trackBoxLegend(XYChart c, int mouseX, int mouseY)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse
double xValue = c.getNearestXValue(mouseX);
// Compute the position of the box. This example assumes a label based x-axis, in which the
// labeling spacing is one x-axis unit. So the left and right sides of the box is 0.5 unit from
// the central x-value.
int boxLeft = c.getXCoor(xValue - 0.5);
int boxRight = c.getXCoor(xValue + 0.5);
int boxTop = plotArea.getTopY();
int boxBottom = plotArea.getBottomY();
// Draw the track box
d.rect(boxLeft, boxTop, boxRight, boxBottom, 0x000000, Chart.Transparent);
// Container to hold the legend entries
ArrayList legendEntries = new ArrayList();
// Iterate through all layers to build the legend array
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// Build the legend entry, consist of the legend icon, the name and the data value.
double dataValue = dataSet.getValue(xIndex);
if ((dataValue != Chart.NoValue) && (dataSet.getDataColor() != Chart.Transparent))
{
legendEntries.Add(dataSet.getLegendIcon() + " " + dataSet.getDataName() + ": " +
c.formatValue(dataValue, "{value|P4}"));
}
}
}
// Create the legend by joining the legend entries
if (legendEntries.Count > 0)
{
legendEntries.Reverse();
string legend = "<*block,bgColor=FFFFCC,edgeColor=000000,margin=5*><*font,underline=1*>" +
c.xAxis().getFormattedLabel(xValue) + "<*/font*><*br*>" + String.Join("<*br*>", (string[])
legendEntries.ToArray(typeof(string))) + "<*/*>";
// Display the legend at the bottom-right side of the mouse cursor, and make sure the legend
// will not go outside the chart image.
TTFText t = d.text(legend, "Arial Bold", 8);
t.draw(Math.Min(mouseX + 12, c.getWidth() - t.getWidth()), Math.Min(mouseY + 18, c.getHeight()
- t.getHeight()), 0x000000, Chart.TopLeft);
}
}
//
// Draw the chart and display it in the given viewer.
//
private void drawChart(WPFChartViewer viewer)
{
// Create an XYChart object 600 x 270 pixels in size, with light grey (f4f4f4)
// background, black (000000) border, 1 pixel raised effect, and with a rounded frame.
XYChart c = new XYChart(600, 270, 0xf4f4f4, 0x000000, 1);
c.setRoundedFrame(0xffffff);
// Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff)
// background. Enable both horizontal and vertical grids by setting their colors to
// grey (cccccc). Set clipping mode to clip the data lines to the plot area.
c.setPlotArea(55, 62, 520, 175, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a title to the chart using 15 pts Times New Roman Bold Italic font, with a light
// grey (dddddd) background, black (000000) border, and a glass like raised effect.
c.addTitle("Field Intensity at Observation Satellite", "Times New Roman Bold Italic", 15
).setBackground(0xdddddd, 0x000000, Chart.glassEffect());
// Add a legend box at the top of the plot area with 9pts Arial Bold font. We set the
// legend box to the same width as the plot area and use grid layout (as opposed to
// flow or top/down layout). This distributes the 3 legend icons evenly on top of the
// plot area.
LegendBox b = c.addLegend2(55, 33, 3, "Arial Bold", 9);
b.setBackground(Chart.Transparent, Chart.Transparent);
b.setWidth(520);
// Configure the y-axis with a 10pts Arial Bold axis title
c.yAxis().setTitle("Intensity (V/m)", "Arial Bold", 10);
// Configure the x-axis to auto-scale with at least 75 pixels between major tick and 15
// pixels between minor ticks. This shows more minor grid lines on the chart.
c.xAxis().setTickDensity(75, 15);
// Set the axes width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Now we add the data to the chart
DateTime lastTime = timeStamps[timeStamps.Length - 1];
if (lastTime != DateTime.MinValue)
{
// Set up the x-axis scale. In this demo, we set the x-axis to show the last 240
// samples, with 250ms per sample.
c.xAxis().setDateScale(lastTime.AddSeconds(
-dataRateTimer.Interval.TotalSeconds * timeStamps.Length), lastTime);
// Set the x-axis label format
c.xAxis().setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer layer = c.addLineLayer2();
// The x-coordinates are the timeStamps.
layer.setXData(timeStamps);
// The 3 data series are used to draw 3 lines. Here we put the latest data values
// as part of the data set name, so you can see them updated in the legend box.
layer.addDataSet(dataSeriesA, 0xff0000, "Alpha: <*bgColor=FFCCCC*>" +
c.formatValue(dataSeriesA[dataSeriesA.Length - 1], " {value|2} "));
layer.addDataSet(dataSeriesB, 0x00cc00, "Beta: <*bgColor=CCFFCC*>" +
c.formatValue(dataSeriesB[dataSeriesB.Length - 1], " {value|2} "));
layer.addDataSet(dataSeriesC, 0x0000ff, "Gamma: <*bgColor=CCCCFF*>" +
c.formatValue(dataSeriesC[dataSeriesC.Length - 1], " {value|2} "));
}
// Assign the chart to the WinChartViewer
viewer.Chart = c;
}
//
// Draw the track line with legend
//
private void trackLineLegend(XYChart c, int mouseX)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
double xValue = c.getNearestXValue(mouseX);
int xCoor = c.getXCoor(xValue);
// Draw a vertical track line at the x-position
d.vline(plotArea.getTopY(), plotArea.getBottomY(), xCoor, 0xaaaaaa);
// Container to hold the legend entries
var legendEntries = new List <string>();
// Iterate through all layers to build the legend array
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// We are only interested in visible data sets with names
string dataName = dataSet.getDataName();
int color = dataSet.getDataColor();
if ((!string.IsNullOrEmpty(dataName)) && (color != Chart.Transparent))
{
// Build the legend entry, consist of the legend icon, name and data value.
double dataValue = dataSet.getValue(xIndex);
legendEntries.Add("<*block*>" + dataSet.getLegendIcon() + " " + dataName + ": " + ((
dataValue == Chart.NoValue) ? "N/A" : c.formatValue(dataValue, "{value|P4}")) +
"<*/*>");
// Draw a track dot for data points within the plot area
int yCoor = c.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
if ((yCoor >= plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()))
{
d.circle(xCoor, yCoor, 4, 4, color, color);
}
}
}
}
// Create the legend by joining the legend entries
legendEntries.Reverse();
string legendText = "<*block,maxWidth=" + plotArea.getWidth() + "*><*block*><*font=Arial Bold*>["
+ c.xAxis().getFormattedLabel(xValue, "mmm dd, yyyy") + "]<*/*> " + String.Join(
" ", legendEntries) + "<*/*>";
// Display the legend on the top of the plot area
TTFText t = d.text(legendText, "Arial Bold", 10);
t.draw(plotArea.getLeftX() + 5, plotArea.getTopY() - 3, 0x000000, Chart.BottomLeft);
}
/// <summary>
/// Draw the chart and display it in the given viewer.
/// </summary>
private void drawChart(WinChartViewer viewer)
{
// Create an XYChart object 600 x 270 pixels in size, with light grey (f4f4f4)
// background, black (000000) border, 1 pixel raised effect, and with a rounded frame.
XYChart c = new XYChart(600, 270, 0xf4f4f4, 0x000000, 1);
c.setRoundedFrame(Chart.CColor(BackColor));
// Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff)
// background. Enable both horizontal and vertical grids by setting their colors to
// grey (cccccc). Set clipping mode to clip the data lines to the plot area.
c.setPlotArea(55, 62, 520, 175, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a title to the chart using 15 pts Times New Roman Bold Italic font, with a light
// grey (dddddd) background, black (000000) border, and a glass like raised effect.
c.addTitle("Realtime Chart Demonstration", "Times New Roman Bold Italic", 15
).setBackground(0xdddddd, 0x000000, Chart.glassEffect());
// Add a legend box at the top of the plot area with 9pts Arial Bold font. We set the
// legend box to the same width as the plot area and use grid layout (as opposed to
// flow or top/down layout). This distributes the 3 legend icons evenly on top of the
// plot area.
LegendBox b = c.addLegend2(55, 33, 3, "Arial Bold", 9);
b.setBackground(Chart.Transparent, Chart.Transparent);
b.setWidth(520);
// Configure the y-axis with a 10pts Arial Bold axis title
c.yAxis().setTitle("Price (USD)", "Arial Bold", 10);
// Configure the x-axis to auto-scale with at least 75 pixels between major tick and 15
// pixels between minor ticks. This shows more minor grid lines on the chart.
c.xAxis().setTickDensity(75, 15);
// Set the axes width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Now we add the data to the chart. Access to the data buffer should be synchronized
// because the data buffer may be updated by another thread at real time
DateTime lastTime = timeStamps[timeStamps.Length - 1];
if (lastTime != DateTime.MinValue)
{
// Set up the x-axis to show the time range in the data buffer
c.xAxis().setDateScale(lastTime.AddSeconds(
-dataRateTimer.Interval * timeStamps.Length / 1000), lastTime);
// Set the x-axis label format
c.xAxis().setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer layer = c.addLineLayer2();
// The x-coordinates are the timeStamps.
layer.setXData(timeStamps);
// The 3 data series are used to draw 3 lines. Here we put the latest data
// values as part of the data set name, so you can see them updated in the
// legend box.
layer.addDataSet(dataSeriesA, 0xff0000, "Software: <*bgColor=FFCCCC*>" +
c.formatValue(dataSeriesA[dataSeriesA.Length - 1], " {value|2} "));
layer.addDataSet(dataSeriesB, 0x00cc00, "Hardware: <*bgColor=CCFFCC*>" +
c.formatValue(dataSeriesB[dataSeriesB.Length - 1], " {value|2} "));
layer.addDataSet(dataSeriesC, 0x0000ff, "Services: <*bgColor=CCCCFF*>" +
c.formatValue(dataSeriesC[dataSeriesC.Length - 1], " {value|2} "));
//
// To show the capabilities of ChartDirector, we are add a movable threshold
// line to the chart and dynamically print a warning message on the chart if
// a data value exceeds the threshold
//
// Add a red mark line to the chart, with the mark label shown at the left of
// the mark line.
double threshold = (double)alarmThreshold.Value;
Mark m = c.yAxis().addMark(threshold, 0xff0000, "Alarm = " + threshold);
m.setAlignment(Chart.Left);
m.setBackground(0xffcccc);
if ((dataSeriesC[dataSeriesC.Length - 1] > threshold) ||
(dataSeriesB[dataSeriesB.Length - 1] > threshold))
{
// Add an alarm message as a custom text box on top-right corner of the
// plot area if the latest data value exceeds threshold.
c.addText(575, 62, "Alarm - Latest Value Exceeded Threshold",
"Arial Bold Italic", 10, 0xffffff, Chart.TopRight).setBackground(0xdd0000);
}
// Fill the region above the threshold as semi-transparent red (80ff8888)
c.addInterLineLayer(layer.getLine(1), m.getLine(), unchecked ((int)0x80ff8888), Chart.Transparent);
c.addInterLineLayer(layer.getLine(2), m.getLine(), unchecked ((int)0x80ff8888), Chart.Transparent);
}
// Set the chart image to the WinChartViewer
winChartViewer1.Image = c.makeImage();
}
//
// Draw track line with axis labels
//
private void trackLineAxis(XYChart c, int mouseX)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
double xValue = c.getNearestXValue(mouseX);
int xCoor = c.getXCoor(xValue);
// The vertical track line is drawn up to the highest data point (the point with smallest
// y-coordinate). We need to iterate all datasets in all layers to determine where it is.
int minY = plotArea.getBottomY();
// Iterate through all layers to find the highest data point
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
double dataPoint = dataSet.getPosition(xIndex);
if ((dataPoint != Chart.NoValue) && (dataSet.getDataColor() != Chart.Transparent))
{
minY = Math.Min(minY, c.getYCoor(dataPoint, dataSet.getUseYAxis()));
}
}
}
// Draw a vertical track line at the x-position up to the highest data point.
d.vline(Math.Max(minY, plotArea.getTopY()), plotArea.getBottomY() + 6, xCoor, d.dashLineColor(
0x000000, 0x0101));
// Draw a label on the x-axis to show the track line position
d.text("<*font,bgColor=000000*> " + c.xAxis().getFormattedLabel(xValue, "mmm dd, yyyy") +
" <*/font*>", "Arial Bold", 8).draw(xCoor, plotArea.getBottomY() + 6, 0xffffff, Chart.Top);
// Iterate through all layers to build the legend array
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// The positional value, axis binding, pixel coordinate and color of the data point.
double dataPoint = dataSet.getPosition(xIndex);
Axis yAxis = dataSet.getUseYAxis();
int yCoor = c.getYCoor(dataPoint, yAxis);
int color = dataSet.getDataColor();
// Draw the axis label only for visible data points of named data sets
if ((dataPoint != Chart.NoValue) && (color != Chart.Transparent) && (yCoor >=
plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()))
{
// The axis label consists of 3 parts - a track dot for the data point, an axis label,
// and a line joining the track dot to the axis label.
// Draw the line first. The end point of the line at the axis label side depends on
// whether the label is at the left or right side of the axis (that is, on whether the
// axis is on the left or right side of the plot area).
int xPos = yAxis.getX() + ((yAxis.getAlignment() == Chart.Left) ? -4 : 4);
d.hline(xCoor, xPos, yCoor, d.dashLineColor(color, 0x0101));
// Draw the track dot
d.circle(xCoor, yCoor, 4, 4, color, color);
// Draw the axis label. If the axis is on the left side of the plot area, the labels
// should right aligned to the axis, and vice versa.
d.text("<*font,bgColor=" + color.ToString("x") + "*> " + c.formatValue(dataPoint,
"{value|P4}") + " <*/font*>", "Arial Bold", 8).draw(xPos, yCoor, 0xffffff, ((
yAxis.getAlignment() == Chart.Left) ? Chart.Right : Chart.Left));
}
}
}
}
//
// Draw the track line with legend
//
private void crossHair(XYChart c, int mouseX, int mouseY)
{
//System.Threading.Thread.Sleep(500);
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = c.initDynamicLayer();
// The plot area object
PlotArea plotArea = c.getPlotArea();
// Draw a vertical line and a horizontal line as the cross hair
d.vline(plotArea.getTopY(), plotArea.getBottomY(), mouseX, d.dashLineColor(0x000000, 0x0101));
d.hline(plotArea.getLeftX(), plotArea.getRightX(), mouseY, d.dashLineColor(0x000000, 0x0101));
// Draw y-axis label
string label = "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" + c.formatValue(c.getYValue(
mouseY, c.yAxis()), "{value|P4}") + "<*/*>";
TTFText t = d.text(label, "Arial Bold", 8);
t.draw(plotArea.getLeftX() - 5, mouseY, 0x000000, Chart.Right);
// Draw x-axis label
label = "<*block,bgColor=FFFFDD,margin=3,edgeColor=000000*>" + c.formatValue(c.getXValue(mouseX),
"{value|P4}") + "<*/*>";
t = d.text(label, "Arial Bold", 8);
t.draw(mouseX, plotArea.getBottomY() + 5, 0x000000, Chart.Top);
}
//
// Draw the chart
//
private void drawChart(RazorChartViewer viewer)
{
//
// Data to draw the chart. In this demo, the data buffer will be filled by a random data
// generator. In real life, the data is probably stored in a buffer (eg. a database table, a
// text file, or some global memory) and updated by other means.
//
// We use a data buffer to emulate the last 240 samples.
int sampleSize = 240;
double[] dataSeries1 = new double[sampleSize];
double[] dataSeries2 = new double[sampleSize];
double[] dataSeries3 = new double[sampleSize];
DateTime[] timeStamps = new DateTime[sampleSize];
// Our pseudo random number generator
DateTime firstDate = DateTime.Now.AddSeconds(-timeStamps.Length);
for (int i = 0; i < timeStamps.Length; ++i)
{
timeStamps[i] = firstDate.AddSeconds(i);
double p = timeStamps[i].Ticks / 10000000;
dataSeries1[i] = Math.Cos(p * 2.1) * 10 + 1 / (Math.Cos(p) * Math.Cos(p) + 0.01) + 20;
dataSeries2[i] = 100 * Math.Sin(p / 27.7) * Math.Sin(p / 10.1) + 150;
dataSeries3[i] = 100 * Math.Cos(p / 6.7) * Math.Cos(p / 11.9) + 150;
}
// Create an XYChart object 600 x 320 pixels in size
XYChart c = new XYChart(600, 320);
// Set the plotarea at (55, 60) and of size 520 x 235 pixels with transparent background and
// border. Enable both horizontal and vertical grids by setting their colors to grey
// (cccccc). Set clipping mode to clip the data lines to the plot area.
c.setPlotArea(55, 60, 520, 235, -1, -1, Chart.Transparent, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a title to the chart using dark grey (0x333333) 20pt Arial Bold font
c.addTitle("Realtime Chart with Snapshot", "Arial Bold", 20, 0x333333);
// Add a legend box at the top of the plot area using horizontal layout. Use 10pt Arial Bold
// font, transparent background and border, and line style legend icon.
LegendBox b = c.addLegend(55, 30, false, "Arial Bold", 10);
b.setBackground(Chart.Transparent, Chart.Transparent);
b.setLineStyleKey();
// Set the x and y axis stems to transparent and the label font to 10pt Arial
c.xAxis().setColors(Chart.Transparent);
c.yAxis().setColors(Chart.Transparent);
c.xAxis().setLabelStyle("Arial", 10);
c.yAxis().setLabelStyle("Arial", 10);
// Add y-axis title using 12pt Arial font
c.yAxis().setTitle("Y-Axis Title Placeholder", "Arial", 12);
// For the automatic x and y axis labels, set the minimum spacing to 75 and 30 pixels.
c.xAxis().setTickDensity(75);
c.yAxis().setTickDensity(30);
// Set the x-axis label format
c.xAxis().setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer layer = c.addLineLayer2();
// The x-coordinates are the timeStamps.
layer.setXData(timeStamps);
// The 3 data series are used to draw 3 lines. Here we put the latest data values as part of
// the data set name, so you can see them updated in the legend box.
layer.addDataSet(dataSeries1, 0xff0000, c.formatValue(dataSeries1[dataSeries1.Length - 1],
"Alpha: {value|2}"));
layer.addDataSet(dataSeries2, 0x00cc00, c.formatValue(dataSeries2[dataSeries2.Length - 1],
"Beta: {value|2}"));
layer.addDataSet(dataSeries3, 0x0000ff, c.formatValue(dataSeries3[dataSeries3.Length - 1],
"Gamma: {value|2}"));
// Determine the output format
if (Request["download"] == "pdf")
{
viewer.Image = c.makeWebImage(Chart.PDF);
}
else
{
viewer.Image = c.makeWebImage(Chart.PNG);
}
}
// draw track line with data labels
private void trackLineLabel(XYChart c, int mouseX)
{
DrawArea d = c.initDynamicLayer();
PlotArea plotArea = c.getPlotArea();
double xValue = c.getNearestXValue(mouseX);
int xCoor = c.getXCoor(xValue);
d.vline(plotArea.getTopY(), plotArea.getBottomY(), xCoor, d.dashLineColor(0x000000, 0x0101));
// container to hold the legned entries
ArrayList legendEntries = new ArrayList();
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
int xIndex = layer.getXIndexOf(xValue);
// iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// we are only interested in visibale sets with names
string dataName = dataSet.getDataName();
int color = dataSet.getDataColor();
if ((!string.IsNullOrEmpty(dataName)) && (color != Chart.Transparent))
{
// Build the legend entry, consist of the legend icon, name and data value.
double dataValue = dataSet.getValue(xIndex);
legendEntries.Add("<*block*>" + dataSet.getLegendIcon() + " " + dataName + ": " + ((
dataValue == Chart.NoValue) ? "N/A" : c.formatValue(dataValue, "{value|P4}")) +
"<*/*>");
// Draw a track dot for data points within the plot area
int yCoor = c.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
if ((yCoor >= plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()))
{
d.circle(xCoor, yCoor, 4, 4, color, color);
}
}
}
}
// Create the legend by joining the legend entries
legendEntries.Reverse();
string legendText = "<*block,maxWidth=" + plotArea.getWidth() + "*><*block*><*font=Arial Bold*>["
+ c.xAxis().getFormattedLabel(xValue, "{value|P4") + "]<*/*> " + String.Join(
" ", (string[])legendEntries.ToArray(typeof(string))) + "<*/*>";
// Display the legend on the top of the plot area
TTFText t = d.text(legendText, "Arial", 8);
t.draw(plotArea.getLeftX() + 5, plotArea.getTopY() - 3, 0x000000, Chart.BottomLeft);
}
/// <summary>
/// Draw the chart.
/// </summary>
private void drawChart(WinChartViewer viewer)
{
//
// In this demo, we copy the visible part of the data to a separate buffer for chart
// plotting.
//
// Note that if you only have a small amount of data (a few hundred data points), it
// may be easier to just plot all data in any case (so the following copying code is
// not needed), and let ChartDirector "clip" the chart to the plot area.
//
// Using ViewPortLeft and ViewPortWidth, get the start and end dates of the view port.
DateTime viewPortStartDate = minDate.AddSeconds(Math.Round(viewer.ViewPortLeft * dateRange));
DateTime viewPortEndDate = viewPortStartDate.AddSeconds(Math.Round(viewer.ViewPortWidth * dateRange));
// Get the starting index of the array using the start date
int startIndex = Array.BinarySearch(timeStamps, viewPortStartDate);
if (startIndex < 0)
{
startIndex = (~startIndex) - 1;
}
// Get the ending index of the array using the end date
int endIndex = Array.BinarySearch(timeStamps, viewPortEndDate);
if (endIndex < 0)
{
endIndex = ((~endIndex) < timeStamps.Length) ? ~endIndex : timeStamps.Length - 1;
}
// Get the length
int noOfPoints = endIndex - startIndex + 1;
// Now, we can just copy the visible data we need into the view port data series
DateTime[] viewPortTimeStamps = new DateTime[noOfPoints];
double[] viewPortDataSeriesA = new double[noOfPoints];
double[] viewPortDataSeriesB = new double[noOfPoints];
double[] viewPortDataSeriesC = new double[noOfPoints];
Array.Copy(timeStamps, startIndex, viewPortTimeStamps, 0, noOfPoints);
Array.Copy(dataSeriesA, startIndex, viewPortDataSeriesA, 0, noOfPoints);
Array.Copy(dataSeriesB, startIndex, viewPortDataSeriesB, 0, noOfPoints);
Array.Copy(dataSeriesC, startIndex, viewPortDataSeriesC, 0, noOfPoints);
if (viewPortTimeStamps.Length >= 520)
{
//
// Zoomable chart with high zooming ratios often need to plot many thousands of
// points when fully zoomed out. However, it is usually not needed to plot more
// data points than the resolution of the chart. Plotting too many points may cause
// the points and the lines to overlap. So rather than increasing resolution, this
// reduces the clarity of the chart. So it is better to aggregate the data first if
// there are too many points.
//
// In our current example, the chart only has 520 pixels in width and is using a 2
// pixel line width. So if there are more than 520 data points, we aggregate the
// data using the ChartDirector aggregation utility method.
//
// If in your real application, you do not have too many data points, you may
// remove the following code altogether.
//
// Set up an aggregator to aggregate the data based on regular sized slots
ArrayMath m = new ArrayMath(viewPortTimeStamps);
m.selectRegularSpacing(viewPortTimeStamps.Length / 260);
// For the timestamps, take the first timestamp on each slot
viewPortTimeStamps = m.aggregate(viewPortTimeStamps, Chart.AggregateFirst);
// For the data values, aggregate by taking the averages
viewPortDataSeriesA = m.aggregate(viewPortDataSeriesA, Chart.AggregateAvg);
viewPortDataSeriesB = m.aggregate(viewPortDataSeriesB, Chart.AggregateAvg);
viewPortDataSeriesC = m.aggregate(viewPortDataSeriesC, Chart.AggregateAvg);
}
//
// Now we have obtained the data, we can plot the chart.
//
///////////////////////////////////////////////////////////////////////////////////////
// Step 1 - Configure overall chart appearance.
///////////////////////////////////////////////////////////////////////////////////////
// Create an XYChart object 600 x 300 pixels in size, with pale blue (0xf0f0ff)
// background, black (000000) border, 1 pixel raised effect, and with a rounded frame.
XYChart c = new XYChart(600, 300, 0xf0f0ff, 0, 1);
c.setRoundedFrame(Chart.CColor(BackColor));
// Set the plotarea at (52, 60) and of size 520 x 192 pixels. Use white (ffffff)
// background. Enable both horizontal and vertical grids by setting their colors to
// grey (cccccc). Set clipping mode to clip the data lines to the plot area.
c.setPlotArea(52, 60, 520, 192, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a top title to the chart using 15 pts Times New Roman Bold Italic font, with a
// light blue (ccccff) background, black (000000) border, and a glass like raised effect.
c.addTitle("Zooming and Scrolling Demonstration", "Times New Roman Bold Italic", 15
).setBackground(0xccccff, 0x0, Chart.glassEffect());
// Add a bottom title to the chart to show the date range of the axis, with a light blue
// (ccccff) background.
c.addTitle2(Chart.Bottom, "From <*font=Arial Bold Italic*>"
+ c.formatValue(viewPortStartDate, "{value|mmm dd, yyyy}")
+ "<*/font*> to <*font=Arial Bold Italic*>"
+ c.formatValue(viewPortEndDate, "{value|mmm dd, yyyy}")
+ "<*/font*> (Duration <*font=Arial Bold Italic*>"
+ Math.Round(viewPortEndDate.Subtract(viewPortStartDate).TotalSeconds / 86400.0)
+ "<*/font*> days)", "Arial Italic", 10).setBackground(0xccccff);
// Add a legend box at the top of the plot area with 9pts Arial Bold font with flow layout.
c.addLegend(50, 33, false, "Arial Bold", 9).setBackground(Chart.Transparent, Chart.Transparent);
// Set axes width to 2 pixels
c.yAxis().setWidth(2);
c.xAxis().setWidth(2);
// Add a title to the y-axis
c.yAxis().setTitle("Price (USD)", "Arial Bold", 9);
///////////////////////////////////////////////////////////////////////////////////////
// Step 2 - Add data to chart
///////////////////////////////////////////////////////////////////////////////////////
//
// In this example, we represent the data by lines. You may modify the code below if
// you want to use other representations (areas, scatter plot, etc).
//
// Add a line layer for the lines, using a line width of 2 pixels
Layer layer = c.addLineLayer2();
layer.setLineWidth(2);
// Now we add the 3 data series to a line layer, using the color red (ff0000), green
// (00cc00) and blue (0000ff)
layer.setXData(viewPortTimeStamps);
layer.addDataSet(viewPortDataSeriesA, 0xff0000, "Product Alpha");
layer.addDataSet(viewPortDataSeriesB, 0x00cc00, "Product Beta");
layer.addDataSet(viewPortDataSeriesC, 0x0000ff, "Product Gamma");
///////////////////////////////////////////////////////////////////////////////////////
// Step 3 - Set up x-axis scale
///////////////////////////////////////////////////////////////////////////////////////
// Set x-axis date scale to the view port date range.
c.xAxis().setDateScale(viewPortStartDate, viewPortEndDate);
//
// In the current demo, the x-axis range can be from a few years to a few days. We can
// let ChartDirector auto-determine the date/time format. However, for more beautiful
// formatting, we set up several label formats to be applied at different conditions.
//
// If all ticks are yearly aligned, then we use "yyyy" as the label format.
c.xAxis().setFormatCondition("align", 360 * 86400);
c.xAxis().setLabelFormat("{value|yyyy}");
// If all ticks are monthly aligned, then we use "mmm yyyy" in bold font as the first
// label of a year, and "mmm" for other labels.
c.xAxis().setFormatCondition("align", 30 * 86400);
c.xAxis().setMultiFormat(Chart.StartOfYearFilter(), "<*font=bold*>{value|mmm yyyy}",
Chart.AllPassFilter(), "{value|mmm}");
// If all ticks are daily algined, then we use "mmm dd<*br*>yyyy" in bold font as the
// first label of a year, and "mmm dd" in bold font as the first label of a month, and
// "dd" for other labels.
c.xAxis().setFormatCondition("align", 86400);
c.xAxis().setMultiFormat(
Chart.StartOfYearFilter(), "<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}",
Chart.StartOfMonthFilter(), "<*font=bold*>{value|mmm dd}");
c.xAxis().setMultiFormat2(Chart.AllPassFilter(), "{value|dd}");
// For all other cases (sub-daily ticks), use "hh:nn<*br*>mmm dd" for the first label of
// a day, and "hh:nn" for other labels.
c.xAxis().setFormatCondition("else");
c.xAxis().setMultiFormat(Chart.StartOfDayFilter(), "<*font=bold*>{value|hh:nn<*br*>mmm dd}",
Chart.AllPassFilter(), "{value|hh:nn}");
///////////////////////////////////////////////////////////////////////////////////////
// Step 4 - Set up y-axis scale
///////////////////////////////////////////////////////////////////////////////////////
if ((viewer.ZoomDirection == WinChartDirection.Horizontal) || (minValue == maxValue))
{
// y-axis is auto-scaled - save the chosen y-axis scaled to support xy-zoom mode
c.layout();
minValue = c.yAxis().getMinValue();
maxValue = c.yAxis().getMaxValue();
}
else
{
// xy-zoom mode - compute the actual axis scale in the view port
double axisLowerLimit = maxValue - (maxValue - minValue) * (viewer.ViewPortTop + viewer.ViewPortHeight);
double axisUpperLimit = maxValue - (maxValue - minValue) * viewer.ViewPortTop;
// *** use the following formula if you are using a log scale axis ***
// double axisLowerLimit = maxValue * Math.Pow(minValue / maxValue, viewer.ViewPortTop + viewer.ViewPortHeight);
// double axisUpperLimit = maxValue * Math.Pow(minValue / maxValue, viewer.ViewPortTop);
// use the zoomed-in scale
c.yAxis().setLinearScale(axisLowerLimit, axisUpperLimit);
c.yAxis().setRounding(false, false);
}
///////////////////////////////////////////////////////////////////////////////////////
// Step 5 - Display the chart
///////////////////////////////////////////////////////////////////////////////////////
viewer.Chart = c;
}
private void DrawChart(RazorChartViewer viewer)
{
//Currently this has been implemented to skip random amount of records
//from the list, because I dont have an live updating database
int sampleSize = 250;
Random rnd = new Random();
int skip = rnd.Next(1, 10);
var data = stripData.Skip(skip).Take(sampleSize).ToList();
double[] dataSeries1 = new double[sampleSize];
double[] dataSeries2 = new double[sampleSize];
double[] dataSeries3 = new double[sampleSize];
DateTime[] timeStamps = new DateTime[sampleSize];
DateTime firstDate = DateTime.Now.AddSeconds(-timeStamps.Length);
for (int i = 0; i < timeStamps.Length; ++i)
{
timeStamps[i] = firstDate.AddSeconds(i);
dataSeries1[i] = data[i].FHR1;
dataSeries2[i] = data[i].FHR2;
dataSeries3[i] = data[i].TOCO1;
}
XYChart c = new XYChart(1200, 400, 0xf4f4f4, 0x000000, 0);
c.setRoundedFrame();
// Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff) background.
// Enable both horizontal and vertical grids by setting their colors to grey (cccccc). Set
// clipping mode to clip the data lines to the plot area.
c.setPlotArea(55, 62, 800, 300, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a title to the chart using 15pt Times New Roman Bold Italic font, with a light grey
// (dddddd) background, black (000000) border, and a glass like raised effect.
c.addTitle("Field Intensity at Observation Satellite", "Times New Roman Bold Italic", 15
).setBackground(0xdddddd, 0x000000, Chart.glassEffect());
// Add a legend box at the top of the plot area with 9pt Arial Bold font. We set the legend
// box to the same width as the plot area and use grid layout (as opposed to flow or top/down
// layout). This distributes the 3 legend icons evenly on top of the plot area.
LegendBox b = c.addLegend2(55, 33, 3, "Arial Bold", 9);
b.setBackground(Chart.Transparent, Chart.Transparent);
b.setWidth(520);
// Configure the y-axis with a 10pt Arial Bold axis title
c.yAxis().setTitle("Intensity (V/m)", "Arial Bold", 10);
// Configure the x-axis to auto-scale with at least 75 pixels between major tick and 15
// pixels between minor ticks. This shows more minor grid lines on the chart.
c.xAxis().setTickDensity(75, 15);
// Set the axes width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Set the x-axis label format
c.xAxis().setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer layer = c.addLineLayer2();
// The x-coordinates are the timeStamps.
layer.setXData(timeStamps);
// The 3 data series are used to draw 3 lines. Here we put the latest data values as part of
// the data set name, so you can see them updated in the legend box.
layer.addDataSet(dataSeries1, 0xff0000, c.formatValue(dataSeries1[dataSeries1.Length - 1],
"Alpha: <*bgColor=FFCCCC*> {value|2} "));
layer.addDataSet(dataSeries2, 0x00cc00, c.formatValue(dataSeries2[dataSeries2.Length - 1],
"Beta: <*bgColor=CCFFCC*> {value|2} "));
layer.addDataSet(dataSeries3, 0x0000ff, c.formatValue(dataSeries3[dataSeries3.Length - 1],
"Gamma: <*bgColor=CCCCFF*> {value|2} "));
// Output the chart
viewer.Image = c.makeWebImage(Chart.PNG);
}
//
// Draw finance chart track line with legend
//
private void trackFinance(MultiChart m, int mouseX)
{
// Clear the current dynamic layer and get the DrawArea object to draw on it.
DrawArea d = m.initDynamicLayer();
// It is possible for a FinanceChart to be empty, so we need to check for it.
if (m.getChartCount() == 0)
{
return;
}
// Get the data x-value that is nearest to the mouse
int xValue = (int)(((XYChart)m.getChart(0)).getNearestXValue(mouseX));
// Iterate the XY charts (main price chart and indicator charts) in the FinanceChart
XYChart c = null;
for (int i = 0; i < m.getChartCount(); ++i)
{
c = (XYChart)m.getChart(i);
// Variables to hold the legend entries
string ohlcLegend = "";
ArrayList legendEntries = new ArrayList();
// Iterate through all layers to find the highest data point
for (int j = 0; j < c.getLayerCount(); ++j)
{
Layer layer = c.getLayerByZ(j);
int xIndex = layer.getXIndexOf(xValue);
int dataSetCount = layer.getDataSetCount();
// In a FinanceChart, only layers showing OHLC data can have 4 data sets
if (dataSetCount == 4)
{
double highValue = layer.getDataSet(0).getValue(xIndex);
double lowValue = layer.getDataSet(1).getValue(xIndex);
double openValue = layer.getDataSet(2).getValue(xIndex);
double closeValue = layer.getDataSet(3).getValue(xIndex);
if (closeValue != Chart.NoValue)
{
// Build the OHLC legend
ohlcLegend = "Open: " + c.formatValue(openValue, "{value|P4}") + ", High: " +
c.formatValue(highValue, "{value|P4}") + ", Low: " + c.formatValue(lowValue,
"{value|P4}") + ", Close: " + c.formatValue(closeValue, "{value|P4}");
// We also draw an upward or downward triangle for up and down days and the %
// change
double lastCloseValue = layer.getDataSet(3).getValue(xIndex - 1);
if (lastCloseValue != Chart.NoValue)
{
double change = closeValue - lastCloseValue;
double percent = change * 100 / closeValue;
string symbol = ((change >= 0) ?
"<*font,color=008800*><*img=@triangle,width=8,color=008800*>" :
"<*font,color=CC0000*><*img=@invertedtriangle,width=8,color=CC0000*>");
ohlcLegend = ohlcLegend + " " + symbol + " " + c.formatValue(change,
"{value|P4}") + " (" + c.formatValue(percent, "{value|2}") + "%)<*/font*>"
;
}
// Use a <*block*> to make sure the line does not wrap within the legend entry
ohlcLegend = "<*block*>" + ohlcLegend + " <*/*>";
}
}
else
{
// Iterate through all the data sets in the layer
for (int k = 0; k < layer.getDataSetCount(); ++k)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(k);
string name = dataSet.getDataName();
double value = dataSet.getValue(xIndex);
if ((!string.IsNullOrEmpty(name)) && (value != Chart.NoValue))
{
// In a FinanceChart, the data set name consists of the indicator name and its
// latest value. It is like "Vol: 123M" or "RSI (14): 55.34". As we are
// generating the values dynamically, we need to extract the indictor name
// out, and also the volume unit (if any).
// The unit character, if any, is the last character and must not be a digit.
string unitChar = name.Substring(name.Length - 1);
if (unitChar.CompareTo("0") >= 0 && unitChar.CompareTo("9") <= 0)
{
unitChar = "";
}
// The indicator name is the part of the name up to the colon character.
int delimiterPosition = name.IndexOf(":");
if (delimiterPosition != -1)
{
name = name.Substring(0, delimiterPosition);
}
// In a FinanceChart, if there are two data sets, it must be representing a
// range.
if (dataSetCount == 2)
{
// We show both values in the range in a single legend entry
value = layer.getDataSet(0).getValue(xIndex);
double value2 = layer.getDataSet(1).getValue(xIndex);
name = name + ": " + c.formatValue(Math.Min(value, value2), "{value|P3}")
+ " - " + c.formatValue(Math.Max(value, value2), "{value|P3}");
}
else
{
// In a FinanceChart, only the layer for volume bars has 3 data sets for
// up/down/flat days
if (dataSetCount == 3)
{
// The actual volume is the sum of the 3 data sets.
value = layer.getDataSet(0).getValue(xIndex) + layer.getDataSet(1
).getValue(xIndex) + layer.getDataSet(2).getValue(xIndex);
}
// Create the legend entry
name = name + ": " + c.formatValue(value, "{value|P3}") + unitChar;
}
// Build the legend entry, consist of a colored square box and the name (with
// the data value in it).
legendEntries.Add("<*block*><*img=@square,width=8,edgeColor=000000,color=" +
dataSet.getDataColor().ToString("x") + "*> " + name + "<*/*>");
}
}
}
}
// Get the plot area position relative to the entire FinanceChart
PlotArea plotArea = c.getPlotArea();
int plotAreaLeftX = plotArea.getLeftX() + c.getAbsOffsetX();
int plotAreaTopY = plotArea.getTopY() + c.getAbsOffsetY();
// The legend is formed by concatenating the legend entries.
legendEntries.Reverse();
string legendText = String.Join(" ", (string[])legendEntries.ToArray(typeof(string)));
// Add the date and the ohlcLegend (if any) at the beginning of the legend
legendText = "<*block,valign=top,maxWidth=" + (plotArea.getWidth() - 5) +
"*><*font=Arial Bold*>[" + c.xAxis().getFormattedLabel(xValue, "mmm dd, yyyy") +
"]<*/font*> " + ohlcLegend + legendText;
// Draw a vertical track line at the x-position
d.vline(plotAreaTopY, plotAreaTopY + plotArea.getHeight(), c.getXCoor(xValue) +
c.getAbsOffsetX(), d.dashLineColor(0x000000, 0x0101));
// Display the legend on the top of the plot area
TTFText t = d.text(legendText, "Arial", 8);
t.draw(plotAreaLeftX + 5, plotAreaTopY + 3, 0x000000, Chart.TopLeft);
}
}
void drawTrackLine(XYChart c, int lineX, Dictionary <string, double> log)
{
// The drawarea and plotarea objects
DrawArea d = c.getDrawArea();
PlotArea plotArea = c.getPlotArea();
// Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
double xValue = c.getNearestXValue(lineX);
int xCoor = c.getXCoor(xValue);
// Draw empty track line if it is ahead of the data
if ((currentIndex <= 0) || ((xCoor < lineX) && (xValue >= chartTimeLimit)))
{
d.vline(plotArea.getTopY(), plotArea.getBottomY(), lineX, 0x888888);
return;
}
// Draw a vertical track line at the x-position
d.vline(plotArea.getTopY(), plotArea.getBottomY(), xCoor, 0x888888);
// Draw a label on the x-axis to show the track line position.
string xlabel = "<*font,bgColor=000000*> " + c.xAxis().getFormattedLabel(xValue, "nn:ss.ff") +
" <*/font*>";
TTFText t = d.text(xlabel, "Arial Bold", 10);
log["x"] = xValue;
// Restrict the x-pixel position of the label to make sure it stays inside the chart image.
int xLabelPos = Math.Max(0, Math.Min(xCoor - t.getWidth() / 2, c.getWidth() - t.getWidth()));
t.draw(xLabelPos, plotArea.getBottomY() + 6, 0xffffff);
// Iterate through all layers to draw the data labels
for (int i = 0; i < c.getLayerCount(); ++i)
{
Layer layer = c.getLayerByZ(i);
// The data array index of the x-value
int xIndex = layer.getXIndexOf(xValue);
// Iterate through all the data sets in the layer
for (int j = 0; j < layer.getDataSetCount(); ++j)
{
ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);
// Get the color and position of the data label
int color = dataSet.getDataColor();
int yCoor = c.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
// Draw a track dot with a label next to it for visible data points in the plot area
if ((yCoor >= plotArea.getTopY()) && (yCoor <= plotArea.getBottomY()) && (color !=
Chart.Transparent) && (!string.IsNullOrEmpty(dataSet.getDataName())))
{
d.circle(xCoor, yCoor, 4, 4, color, color);
string label = "<*font,bgColor=" + color.ToString("x") + "*> " + c.formatValue(
dataSet.getValue(xIndex), "{value|P4}") + " <*/font*>";
t = d.text(label, "Arial Bold", 10);
log[dataSet.getDataName()] = dataSet.getValue(xIndex);
// Draw the label on the right side of the dot if the mouse is on the left side the
// chart, and vice versa. This ensures the label will not go outside the chart image.
if (xCoor <= (plotArea.getLeftX() + plotArea.getRightX()) / 2)
{
t.draw(xCoor + 5, yCoor, 0xffffff, Chart.Left);
}
else
{
t.draw(xCoor - 5, yCoor, 0xffffff, Chart.Right);
}
}
}
}
}
//Main code for creating chart.
//Note: the argument chartIndex is unused because this demo only has 1 chart.
public void createChart(WPFChartViewer viewer, int chartIndex)
{
// The data for the line chart
double[] data0 = { 410, 420, 500, 590 };
double[] data1 = { 500, 370, 680, 850 };
string[] labels = { "Q1", "Q2", "Q3", "Q4" };
// Create a XYChart object of size 600 x 400 pixels
XYChart c = new XYChart(600, 400);
// Add a title to the chart using 18pt Times Bold Italic font
ChartDirector.TextBox title = c.addTitle("Product Line Global Revenue",
"Times New Roman Bold Italic", 18);
// Tentatively set the plotarea at (50, 55) and of (chart_width - 100) x (chart_height -
// 150) pixels in size. Use a vertical gradient color from sky blue (aaccff) t0 light
// blue (f9f9ff) as background. Set both horizontal and vertical grid lines to dotted
// semi-transprent black (aa000000).
PlotArea plotArea = c.setPlotArea(50, 55, c.getWidth() - 100, c.getHeight() - 150,
c.linearGradientColor(0, 55, 0, 55 + c.getHeight() - 150, 0xaaccff, 0xf9fcff), -1,
-1, c.dashLineColor(unchecked ((int)0xaa000000), Chart.DotLine), -1);
// Set y-axis title using 12 points Arial Bold Italic font, and set its position 10
// pixels from the axis.
c.yAxis().setTitle("Revenue (USD millions)", "Arial Bold Italic", 12);
c.yAxis().setTitlePos(Chart.Left, 10);
// Set y-axis label style to 10 points Arial Bold and axis color to transparent
c.yAxis().setLabelStyle("Arial Bold", 10);
c.yAxis().setColors(Chart.Transparent);
// Set y-axis tick density to 30 pixels. ChartDirector auto-scaling will use this as the
// guideline when putting ticks on the y-axis.
c.yAxis().setTickDensity(30);
// Add a bar layer to the chart with side layout
BarLayer layer = c.addBarLayer2(Chart.Side);
// Add two data sets to the bar layer
layer.addDataSet(data0, 0xff6600, "FY 2007");
layer.addDataSet(data1, 0x0088ff, "FY 2008");
// Use soft lighting effect with light direction from the left
layer.setBorderColor(Chart.Transparent, Chart.softLighting(Chart.Left));
// Set the x axis labels
c.xAxis().setLabels(labels);
// Convert the labels on the x-axis to a CDMLTable
CDMLTable table = c.xAxis().makeLabelTable();
// Set the default left/right margins to 5 pixels and top/bottom margins to 3 pixels.
// Set the default font size to 10 points
ChartDirector.TextBox cellStyle = table.getStyle();
cellStyle.setMargin2(5, 5, 4, 3);
cellStyle.setFontSize(10);
// Set the first row to use Arial Bold font, with a light grey (eeeeee) background.
ChartDirector.TextBox firstRowStyle = table.getRowStyle(0);
firstRowStyle.setFontStyle("Arial Bold");
firstRowStyle.setBackground(0xeeeeee, Chart.LineColor);
//
// We can add more information to the table. In this sample code, we add the data series
// and the legend icons to the table.
//
// Add 3 more rows to the table. Set the background of the 2nd row to light grey
// (eeeeee).
table.appendRow();
table.appendRow().setBackground(0xeeeeee, Chart.LineColor);
table.appendRow();
// Put the values of the 2 data series in the first 2 rows. Put the percentage
// differences in the 3rd row.
for (int i = 0; i < data0.Length; ++i)
{
table.setText(i, 1, (data0[i]).ToString());
table.setText(i, 2, (data1[i]).ToString());
double percentageDiff = 100.0 * (data1[i] - data0[i]) / data0[i];
// Use red or green color depending on whether the difference is positive or
// negative
string formatString = "<*color=008800*>+{value|1}%";
if (percentageDiff < 0)
{
formatString = "<*color=cc0000*>{value|1}%";
}
table.setText(i, 3, c.formatValue(percentageDiff, formatString));
}
// Insert a column on the left for the legend icons using Arial Bold font.
table.insertCol(0).setFontStyle("Arial Bold");
// The top cell is set to transparent, so it is invisible
table.getCell(0, 0).setBackground(Chart.Transparent, Chart.Transparent);
// The next 2 cells are set to the legend icons and names of the 2 data series
table.setText(0, 1, layer.getLegendIcon(0) + " FY 2007");
table.setText(0, 2, layer.getLegendIcon(1) + " FY 2008");
// The last cell is set to "Change"
table.setText(0, 3, "Change");
// Append a column on the right for the total values.
table.appendCol();
// Put "Total" in the top cell as the heading of this column
table.setText(table.getColCount() - 1, 0, "Total");
// The next two cells are the total of the data series
double total0 = new ArrayMath(data0).sum();
double total1 = new ArrayMath(data1).sum();
table.setText(table.getColCount() - 1, 1, (total0).ToString());
table.setText(table.getColCount() - 1, 2, (total1).ToString());
// The last cell is the percentage differences of the total
double totalPercentageDiff = (total1 - total0) / total0 * 100;
// Use red or green color depending on whether the difference is positive or negative
string totalFormatString = "<*color=008800*>+{value|1}%";
if (totalPercentageDiff < 0)
{
totalFormatString = "<*color=cc0000*>{value|1}%";
}
table.setText(table.getColCount() - 1, 3, c.formatValue(totalPercentageDiff,
totalFormatString));
//
// We now demonstrate how to adjust the plot area positions, to allow space for the
// newly inserted left and right columns in the table.
//
// We layout the axis first in order to get the axis metrics (including table metrics)
c.layoutAxes();
// If the first column is wider than the left y-axis, we need to reserve for some left
// margin to ensure the first column stays within the chart.
int leftMargin = 0;
if (table.getColWidth(0) > c.yAxis().getThickness())
{
leftMargin = table.getColWidth(0) - c.yAxis().getThickness();
}
// Similarly, we need to reserve some right margin for the last column
int rightMargin = table.getColWidth(table.getColCount() - 1);
// Adjust the plot area size, such that the bounding box (inclusive of axes) using the
// given left and right margin, plus 2 more pixels. Put the plot area 10 pixels below
// the title and use 2 pixels as the bottom margin. from the left, right and bottom
// edge, and is just under the legend box.
c.packPlotArea(leftMargin + 2, title.getHeight() + 10, c.getWidth() - 3 - rightMargin,
c.getHeight() - 3);
// After determining the exact plot area position, we may adjust title position so that
// it is centered relative to the plot area (instead of the chart)
title.setPos(plotArea.getLeftX() + (plotArea.getWidth() - title.getWidth()) / 2,
title.getTopY());
// Output the chart
viewer.Chart = c;
//include tool tip for the chart
viewer.ImageMap = c.getHTMLImageMap("clickable", "",
"title='Revenue in {xLabel} {dataSetName}: US$ {value}M'");
}
//
// Draw the chart
//
private void drawChart(RazorChartViewer viewer)
{
//
// Data to draw the chart. In this demo, the data buffer will be filled by a random data
// generator. In real life, the data is probably stored in a buffer (eg. a database table, a
// text file, or some global memory) and updated by other means.
//
// We use a data buffer to emulate the last 240 samples.
int sampleSize = 240;
double[] dataSeries1 = new double[sampleSize];
double[] dataSeries2 = new double[sampleSize];
double[] dataSeries3 = new double[sampleSize];
DateTime[] timeStamps = new DateTime[sampleSize];
// Our pseudo random number generator
DateTime firstDate = DateTime.Now.AddSeconds(-timeStamps.Length);
for (int i = 0; i < timeStamps.Length; ++i)
{
timeStamps[i] = firstDate.AddSeconds(i);
double p = timeStamps[i].Ticks / 10000000;
dataSeries1[i] = Math.Cos(p * 2.1) * 10 + 1 / (Math.Cos(p) * Math.Cos(p) + 0.01) + 20;
dataSeries2[i] = 100 * Math.Sin(p / 27.7) * Math.Sin(p / 10.1) + 150;
dataSeries3[i] = 100 * Math.Cos(p / 6.7) * Math.Cos(p / 11.9) + 150;
}
// Create an XYChart object 600 x 270 pixels in size, with light grey (f4f4f4) background,
// black (000000) border, 1 pixel raised effect, and with a rounded frame.
XYChart c = new XYChart(600, 270, 0xf4f4f4, 0x000000, 0);
c.setRoundedFrame();
// Set the plotarea at (55, 62) and of size 520 x 175 pixels. Use white (ffffff) background.
// Enable both horizontal and vertical grids by setting their colors to grey (cccccc). Set
// clipping mode to clip the data lines to the plot area.
c.setPlotArea(55, 62, 520, 175, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);
c.setClipping();
// Add a title to the chart using 15pt Times New Roman Bold Italic font, with a light grey
// (dddddd) background, black (000000) border, and a glass like raised effect.
c.addTitle("Field Intensity at Observation Satellite", "Times New Roman Bold Italic", 15
).setBackground(0xdddddd, 0x000000, Chart.glassEffect());
// Add a legend box at the top of the plot area with 9pt Arial Bold font. We set the legend
// box to the same width as the plot area and use grid layout (as opposed to flow or top/down
// layout). This distributes the 3 legend icons evenly on top of the plot area.
LegendBox b = c.addLegend2(55, 33, 3, "Arial Bold", 9);
b.setBackground(Chart.Transparent, Chart.Transparent);
b.setWidth(520);
// Configure the y-axis with a 10pt Arial Bold axis title
c.yAxis().setTitle("Intensity (V/m)", "Arial Bold", 10);
// Configure the x-axis to auto-scale with at least 75 pixels between major tick and 15
// pixels between minor ticks. This shows more minor grid lines on the chart.
c.xAxis().setTickDensity(75, 15);
// Set the axes width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Set the x-axis label format
c.xAxis().setLabelFormat("{value|hh:nn:ss}");
// Create a line layer to plot the lines
LineLayer layer = c.addLineLayer2();
// The x-coordinates are the timeStamps.
layer.setXData(timeStamps);
// The 3 data series are used to draw 3 lines. Here we put the latest data values as part of
// the data set name, so you can see them updated in the legend box.
layer.addDataSet(dataSeries1, 0xff0000, c.formatValue(dataSeries1[dataSeries1.Length - 1],
"Alpha: <*bgColor=FFCCCC*> {value|2} "));
layer.addDataSet(dataSeries2, 0x00cc00, c.formatValue(dataSeries2[dataSeries2.Length - 1],
"Beta: <*bgColor=CCFFCC*> {value|2} "));
layer.addDataSet(dataSeries3, 0x0000ff, c.formatValue(dataSeries3[dataSeries3.Length - 1],
"Gamma: <*bgColor=CCCCFF*> {value|2} "));
// Output the chart
viewer.Image = c.makeWebImage(Chart.PNG);
}