Step 2: Adding Data

Chart3D for WPF and Silverlight supports data values defined as a two-dimensional array of z-values where the first index corresponds to X and the second index corresponds to Y. One of the most common uses of a Chart3D is plotting 3D functions. Let's plot a function defined as the following:

z(x,y) = x*x - y*y;

in the range

-1 <= x <= 1

-1 <= y <= 1

To do this, follow these steps:

Select View | Code in your project.
Add the following statement at the top of the page:

C# - WPF
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using C1.WPF.Chart3D;

C# - WPF	Copy Code
using C1.WPF.Chart3D;

C# - Silverlight
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using C1.Silverlight.Chart3D

C# - Silverlight	Copy Code
using C1.Silverlight.Chart3D

Add the following code to define the data:

C#	Copy Code
public MainWindow() { InitializeComponent(); c1Chart3D1.Children.Clear(); // create 2D array 10x10 int xlen = 10, ylen = 10; var zdata = new double[xlen, ylen]; double stepx = 2.0 / (xlen - 1); double stepy = 2.0 / (ylen - 1); // calculate function for all points in the range for (int ix = 0; ix < xlen; ix++) for (int iy = 0; iy < ylen; iy++) { double x = -1.0 + ix * stepx; // -1 <= x <= 1 double y = -1.0 + iy * stepy; // -1 <= x <= 1 zdata[ix, iy] = x * x - y * y; } // create data series var ds = new GridDataSeries(); ds.Start = new Point(-1, -1); // start for x,y ds.Step = new Point(stepx, stepy); // step for x,y ds.ZData = zdata; // z-values // add series to the chart c1Chart3D1.Children.Add(ds); }

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public MainWindow()
        {
            InitializeComponent();
            c1Chart3D1.Children.Clear();
 
 
            // create 2D array 10x10
            int xlen = 10, ylen = 10;
            var zdata = new double[xlen, ylen];
            double stepx = 2.0 / (xlen - 1);
            double stepy = 2.0 / (ylen - 1);
 
            // calculate function for all points in the range
            for (int ix = 0; ix < xlen; ix++)
                for (int iy = 0; iy < ylen; iy++)
                {
                    double x = -1.0 + ix * stepx; //  -1 <= x <= 1
                    double y = -1.0 + iy * stepy; //  -1 <= x <= 1
                    zdata[ix, iy] = x * x - y * y;
                }
 
            // create data series
            var ds = new GridDataSeries();
            ds.Start = new Point(-1, -1); // start for x,y
            ds.Step = new Point(stepx, stepy); // step for x,y
            ds.ZData = zdata; // z-values
 
            // add series to the chart
            c1Chart3D1.Children.Add(ds);
        }

In the next step you will change the appearance of the chart.