//Main code for creating charts
public void createChart(WinChartViewer viewer, int chartIndex)
{
// The value to display on the meter
double value = 75.35;
// Create a LinearMeter object of size 250 x 75 pixels with very light grey (0xeeeeee)
// backgruond and a light grey (0xccccccc) 3-pixel thick rounded frame
LinearMeter m = new LinearMeter(70, 260, 0xeeeeee, 0xcccccc);
m.setRoundedFrame(Chart.Transparent);
m.setThickFrame(3);
// Set the scale region top-left corner at (28, 30), with size of 20 x 196 pixels. The
// scale labels are located on the left (default - implies vertical meter)
m.setMeter(28, 30, 20, 196);
// Set meter scale from 0 - 100, with a tick every 10 units
m.setScale(0, 100, 10);
// Demostrate different types of color scales and putting them at different positions
double[] smoothColorScale = { 0, 0x6666ff, 25, 0x00bbbb, 50, 0x00ff00, 75, 0xffff00, 100,
0xff0000 };
double[] stepColorScale = { 0, 0x33ff33, 50, 0xffff33, 80, 0xff3333, 100 };
double[] highLowColorScale = { 0, 0x6666ff, 70, Chart.Transparent, 100, 0xff0000 };
if (chartIndex == 0)
{
// Add the smooth color scale at the default position
m.addColorScale(smoothColorScale);
}
else if (chartIndex == 1)
{
// Add the step color scale at the default position
m.addColorScale(stepColorScale);
}
else if (chartIndex == 2)
{
// Add the high low scale at the default position
m.addColorScale(highLowColorScale);
}
else if (chartIndex == 3)
{
// Add the smooth color scale starting at x = 28 (left of scale) with zero width and
// ending at x = 28 with 20 pixels width
m.addColorScale(smoothColorScale, 28, 0, 28, 20);
}
else if (chartIndex == 4)
{
// Add the smooth color scale starting at x = 38 (center of scale) with zero width
// and ending at x = 28 with 20 pixels width
m.addColorScale(smoothColorScale, 38, 0, 28, 20);
}
else
{
// Add the smooth color scale starting at x = 48 (right of scale) with zero width
// and ending at x = 28 with 20 pixels width
m.addColorScale(smoothColorScale, 48, 0, 28, 20);
}
// In this demo, we demostrate pointers of different shapes
if (chartIndex < 3)
{
// Add a blue (0x0000cc) pointer of default shape at the specified value
m.addPointer(value, 0x0000cc);
}
else
{
// Add a blue (0x0000cc) pointer of triangular shape the specified value
m.addPointer(value, 0x0000cc).setShape(Chart.TriangularPointer, 0.7, 0.5);
}
// Add a title using 8pt Arial Bold font with a border color background
m.addTitle("Temp C", "Arial Bold", 8, Chart.TextColor).setBackground(0xcccccc);
// Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt
// Arial Bold font on a black (0x000000) background with rounded border.
ChartDirector.TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(
value, "2"), "Arial Bold", 8, 0xffffff, Chart.Bottom);
t.setBackground(0x000000);
t.setRoundedCorners(3);
t.setMargin(5, 5, 2, 1);
// Output the chart
viewer.Chart = m;
}
//
// Draw the chart
//
private void drawChart(WPFChartViewer viewer)
{
// Have not started collecting data ???
if (currentIndex <= 0)
{
return;
}
// The start time is equal to the latest time minus the time range of the chart
double startTime = timeStamps[currentIndex - 1] - timeRange;
int startIndex = (int)Math.Ceiling(Chart.bSearch(timeStamps, 0, currentIndex, startTime) - 0.1);
// For a sweep chart, if the line goes beyond the right border, it will wrap back to
// the left. We need to determine the wrap position (the right border).
double wrapTime = Math.Floor(startTime / timeRange + 1) * timeRange;
double wrapIndex = Chart.bSearch(timeStamps, 0, currentIndex, wrapTime);
int wrapIndexA = (int)Math.Ceiling(wrapIndex);
int wrapIndexB = (int)Math.Floor(wrapIndex);
// The data arrays and the colors and names of the data series
var allArrays = new[] { timeStamps, channel1, channel2 };
int[] colors = { 0xff0000, 0x00cc00 };
string[] names = { "Channel 1", "Channel 2" };
// Split all data arrays into two parts A and B at the wrap position. The B part is the
// part that is wrapped back to the left.
var allArraysA = new double[allArrays.Length][];
var allArraysB = new double[allArrays.Length][];
for (int i = 0; i < allArrays.Length; ++i)
{
allArraysA[i] = (double[])Chart.arraySlice(allArrays[i], startIndex, wrapIndexA - startIndex + 1);
allArraysB[i] = (double[])Chart.arraySlice(allArrays[i], wrapIndexB, currentIndex - wrapIndexB);
}
// Normalize the plotted timeStamps (the first element of allArrays) to start from 0
for (int i = 0; i < allArraysA[0].Length; ++i)
{
allArraysA[0][i] -= wrapTime - timeRange;
}
for (int i = 0; i < allArraysB[0].Length; ++i)
{
allArraysB[0][i] -= wrapTime;
}
//
// Now we have prepared all the data and can plot the chart.
//
//================================================================================
// Configure overall chart appearance.
//================================================================================
// Create an XYChart object the same size as WPFChartViewer, with a minimum of 300 x 150
XYChart c = new XYChart(Math.Max(300, (int)viewer.ActualWidth), Math.Max(150, (int)viewer.ActualHeight));
// Set the plotarea at (0, 0) with width 1 pixel less than chart width, and height 20 pixels
// less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
// as background. Set border to transparent and grid lines to white (ffffff).
c.setPlotArea(0, 0, c.getWidth() - 1, c.getHeight() - 20, c.linearGradientColor(0, 0, 0,
c.getHeight() - 20, 0xf0f6ff, 0xa0c0ff), -1, Chart.Transparent, 0xffffff, 0xffffff);
// In our code, we can overdraw the line slightly, so we clip it to the plot area.
c.setClipping();
// Add a legend box at the right side using horizontal layout. Use 10pt Arial Bold as font. Set
// the background and border color to Transparent and use line style legend key.
LegendBox b = c.addLegend(c.getWidth() - 1, 10, false, "Arial Bold", 10);
b.setBackground(Chart.Transparent);
b.setAlignment(Chart.Right);
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, 0x336699);
// Configure the y-axis label to be inside the plot area and above the horizontal grid lines
c.yAxis().setLabelGap(-1);
c.yAxis().setMargin(20);
c.yAxis().setLabelAlignment(1);
// Configure the x-axis labels to be to the left of the vertical grid lines
c.xAxis().setLabelAlignment(1);
//================================================================================
// Add data to chart
//================================================================================
// Draw the lines, which consists of A segments and B segments (the wrapped segments)
foreach (var dataArrays in new[] { allArraysA, allArraysB })
{
LineLayer layer = c.addLineLayer2();
layer.setLineWidth(2);
layer.setFastLineMode();
// The first element of dataArrays is the timeStamp, and the rest are the data.
layer.setXData(dataArrays[0]);
for (int i = 1; i < dataArrays.Length; ++i)
{
layer.addDataSet(dataArrays[i], colors[i - 1], names[i - 1]);
}
// Disable legend entries for the B lines to avoid duplication with the A lines
if (dataArrays == allArraysB)
{
layer.setLegend(Chart.NoLegend);
}
}
// The B segments contain the latest data. We add a vertical line at the latest position.
int lastIndex = allArraysB[0].Length - 1;
Mark m = c.xAxis().addMark(allArraysB[0][lastIndex], -1);
m.setMarkColor(0x0000ff, Chart.Transparent, Chart.Transparent);
m.setDrawOnTop(false);
// We also add a symbol and a label for each data series at the latest position
for (int i = 1; i < allArraysB.Length; ++i)
{
// Add the symbol
Layer layer = c.addScatterLayer(new double[] { allArraysB[0][lastIndex] }, new double[] {
allArraysB[i][lastIndex]
}, "", Chart.CircleSymbol, 9, colors[i - 1], colors[i - 1]);
layer.moveFront();
// Add the label
string label = "<*font,bgColor=" + colors[i - 1].ToString("x") + "*> {value|P4} <*/font*>";
layer.setDataLabelFormat(label);
// The label style
ChartDirector.TextBox t = layer.setDataLabelStyle("Arial Bold", 10, 0xffffff);
bool isOnLeft = allArraysB[0][lastIndex] <= timeRange / 2;
t.setAlignment(isOnLeft ? Chart.Left : Chart.Right);
t.setMargin(isOnLeft ? 5 : 0, isOnLeft ? 0 : 5, 0, 0);
}
//================================================================================
// Configure axis scale and labelling
//================================================================================
c.xAxis().setLinearScale(0, timeRange);
// For the automatic axis labels, set the minimum spacing to 75/40 pixels for the x/y axis.
c.xAxis().setTickDensity(75);
c.yAxis().setTickDensity(40);
// Set the auto-scale margin to 0.05, and the zero affinity to 0.6
c.yAxis().setAutoScale(0.05, 0.05, 0.6);
//================================================================================
// Output the chart
//================================================================================
viewer.Chart = c;
}
//Main code for creating charts
public void createChart(WinChartViewer viewer, int chartIndex)
{
// The value to display on the meter
double value = 74.25;
// Create a LinearMeter object of size 70 x 260 pixels with very light grey (0xeeeeee)
// backgruond and a grey (0xbbbbbb) 3-pixel thick rounded frame
LinearMeter m = new LinearMeter(70, 260, 0xeeeeee, 0xbbbbbb);
m.setRoundedFrame(Chart.Transparent);
m.setThickFrame(3);
// Set the scale region top-left corner at (28, 33), with size of 20 x 194 pixels. The
// scale labels are located on the left (default - implies vertical meter).
m.setMeter(28, 33, 20, 194);
// Set meter scale from 0 - 100, with a tick every 10 units
m.setScale(0, 100, 10);
// Demostrate different types of color scales
double[] smoothColorScale = { 0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100,
0xff0000 };
double[] stepColorScale = { 0, 0x00dd00, 50, 0xffff00, 80, 0xff0000, 100 };
double[] highColorScale = { 70, Chart.Transparent, 100, 0xff0000 };
double[] lowColorScale = { 0, 0x0000ff, 30, Chart.Transparent };
if (chartIndex == 0)
{
// Add a blue (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded
// corners
m.addBar(0, value, 0x0088ff, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
// Add a 6-pixel thick smooth color scale at x = 53 (right of meter scale)
m.addColorScale(smoothColorScale, 53, 6);
}
else if (chartIndex == 1)
{
// Add a green (0x00cc00) bar from 0 to value with bar lighting effect and 4 pixel
// rounded corners
m.addBar(0, value, 0x00cc00, Chart.barLighting(), 4);
// Add a high only color scale at x = 52 (right of meter scale) with thickness
// varying from 0 to 8
m.addColorScale(highColorScale, 52, 0, 52, 8);
// Add a low only color scale at x = 52 (right of meter scale) with thickness
// varying from 8 to 0
m.addColorScale(lowColorScale, 52, 8, 52, 0);
}
else if (chartIndex == 2)
{
// Add a purple (0x0088ff) bar from 0 to value with glass effect and 4 pixel rounded
// corners
m.addBar(0, value, 0x8833dd, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
// Add a high only color scale at x = 52 (right of meter scale) with thickness
// varying from 0 to 8
m.addColorScale(highColorScale, 52, 0, 52, 8);
}
else if (chartIndex == 3)
{
// Add a orange (0xff8800) bar from 0 to value with cylinder lighting effect
m.addBar(0, value, 0xff8800, Chart.cylinderEffect());
// Add a high only color scale at x = 53 (right of meter scale)
m.addColorScale(highColorScale, 53, 6);
}
else if (chartIndex == 4)
{
// Add a red (0xee3333) bar from 0 to value with glass effect and 4 pixel rounded
// corners
m.addBar(0, value, 0xee3333, Chart.glassEffect(Chart.NormalGlare, Chart.Left), 4);
// Add a step color scale at x = 53 (right of meter scale)
m.addColorScale(stepColorScale, 53, 6);
}
else
{
// Add a grey (0xaaaaaa) bar from 0 to value
m.addBar(0, value, 0xaaaaaa);
// Add a smooth color scale at x = 52 (right of meter scale) with thickness varying
// from 0 to 8
m.addColorScale(smoothColorScale, 52, 0, 52, 8);
}
// Add a title using 8pt Arial Bold font with grey (0xbbbbbb) background
m.addTitle("Temp C", "Arial Bold", 8, Chart.TextColor).setBackground(0xbbbbbb);
// Add a text box at the bottom-center. Display the value using white (0xffffff) 8pt
// Arial Bold font on a black (0x000000) background with rounded border.
ChartDirector.TextBox t = m.addText(m.getWidth() / 2, m.getHeight() - 8, m.formatValue(
value, "2"), "Arial Bold", 8, 0xffffff, Chart.Bottom);
t.setBackground(0x000000);
t.setRoundedCorners(3);
t.setMargin(5, 5, 2, 1);
// Output the chart
viewer.Chart = m;
}
