//
// Create chart
//
private void createChart(RazorChartViewer viewer)
{
// Get the selected year.
string selectedYear = Request["xLabel"];
//
// In real life, the data may come from a database based on selectedYear. In this example, we
// just use a random number generator.
//
int seed = 50 + (int.Parse(selectedYear) - 1996) * 15;
RanTable rantable = new RanTable(seed, 1, 12);
rantable.setCol2(0, seed, -seed * 0.25, seed * 0.33, seed * 0.1, seed * 3);
double[] data = rantable.getCol(0);
//
// Now we obtain the data into arrays, we can start to draw the chart using ChartDirector
//
// Create a XYChart object of size 600 x 320 pixels
XYChart c = new XYChart(600, 360);
// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Month Revenue for Star Tech for " + selectedYear, "Times New Roman Bold Italic",
18);
// Set the plotarea at (60, 40) and of size 500 x 280 pixels. Use a vertical gradient color
// from light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to
// white (ffffff).
c.setPlotArea(60, 40, 500, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc),
-1, 0xffffff, 0xffffff);
// Add a red line (ff0000) chart layer using the data
ChartDirector.DataSet dataSet = c.addLineLayer().addDataSet(data, 0xff0000, "Revenue");
// Set the line width to 3 pixels
dataSet.setLineWidth(3);
// Use a 13 point circle symbol to plot the data points
dataSet.setDataSymbol(Chart.CircleSymbol, 13);
// Set the labels on the x axis. In this example, the labels must be Jan - Dec.
string[] labels = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sept", "Oct",
"Nov", "Dec" };
c.xAxis().setLabels(labels);
// When auto-scaling, use tick spacing of 40 pixels as a guideline
c.yAxis().setTickDensity(40);
// Add a title to the x axis to reflect the selected year
c.xAxis().setTitle("Year " + selectedYear, "Times New Roman Bold Italic", 12);
// Add a title to the y axis
c.yAxis().setTitle("USD (millions)", "Times New Roman Bold Italic", 12);
// Set axis label style to 8pt Arial Bold
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 8);
// Set axis line width to 2 pixels
c.xAxis().setWidth(2);
c.yAxis().setWidth(2);
// Create the image and save it in a temporary location
viewer.Image = c.makeWebImage(Chart.PNG);
// Create an image map for the chart
viewer.ImageMap = c.getHTMLImageMap(Url.Action("", "clickpie", new { year = selectedYear }),
"", "title='{xLabel}: US$ {value|0}M'");
}
