//
        // Create chart
        //
        private void createChart(RazorChartViewer viewer)
        {
            // The x and y coordinates of the grid
            double[] dataX = { -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
            double[] dataY = { -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

            // The values at the grid points. In this example, we will compute the values using the
            // formula z = Sin(x * x / 128 - y * y / 256 + 3) * Cos(x / 4 + 1 - Exp(y / 8))
            double[] dataZ = new double[dataX.Length * dataY.Length];
            for (int yIndex = 0; yIndex < dataY.Length; ++yIndex)
            {
                double y = dataY[yIndex];
                for (int xIndex = 0; xIndex < dataX.Length; ++xIndex)
                {
                    double x = dataX[xIndex];
                    dataZ[yIndex * dataX.Length + xIndex] = Math.Sin(x * x / 128.0 - y * y / 256.0 + 3) *
                                                            Math.Cos(x / 4.0 + 1 - Math.Exp(y / 8.0));
                }
            }

            // Create a SurfaceChart object of size 750 x 600 pixels
            SurfaceChart c = new SurfaceChart(750, 600);

            // Add a title to the chart using 20 points Times New Roman Italic font
            c.addTitle("Surface Energy Density       ", "Times New Roman Italic", 20);

            // Set the center of the plot region at (380, 260), and set width x depth x height to 360 x
            // 360 x 270 pixels
            c.setPlotRegion(380, 260, 360, 360, 270);

            // Set the elevation and rotation angles to 30 and 210 degrees
            c.setViewAngle(30, 210);

            // Set the perspective level to 60
            c.setPerspective(60);

            // Set the data to use to plot the chart
            c.setData(dataX, dataY, dataZ);

            // Spline interpolate data to a 80 x 80 grid for a smooth surface
            c.setInterpolation(80, 80);

            // Use semi-transparent black (c0000000) for x and y major surface grid lines. Use dotted
            // style for x and y minor surface grid lines.
            int majorGridColor = unchecked ((int)0xc0000000);
            int minorGridColor = c.dashLineColor(majorGridColor, Chart.DotLine);

            c.setSurfaceAxisGrid(majorGridColor, majorGridColor, minorGridColor, minorGridColor);

            // Set contour lines to semi-transparent white (80ffffff)
            c.setContourColor(unchecked ((int)0x80ffffff));

            // Add a color axis (the legend) in which the left center is anchored at (665, 280). Set the
            // length to 200 pixels and the labels on the right side.
            c.setColorAxis(665, 280, Chart.Left, 200, Chart.Right);

            // Set the x, y and z axis titles using 12 points Arial Bold font
            c.xAxis().setTitle("X Title\nPlaceholder", "Arial Bold", 12);
            c.yAxis().setTitle("Y Title\nPlaceholder", "Arial Bold", 12);
            c.zAxis().setTitle("Z Title Placeholder", "Arial Bold", 12);

            // Output the chart
            viewer.Image = c.makeWebImage(Chart.JPG);
        }