Surface not visible but legend is

[skruegel]

For some reason the data does not display. I've looked at the example code provide under the Program Group, but obviously something is missing.
Here is what I am trying:
public Form1()
{
InitializeComponent();
tChart1.Series.Clear();

// Test data
double[] yData = new double[10];
double[] zData = new double[10];
DateTime[] xData = new DateTime[10];
for (int index = 0; index < 10; index++)
{
TimeSpan ts = new TimeSpan(index, 0, 0, 0);
xData[index] = DateTime.Now + ts;
yData[index] = index;
zData[index] = 20 * Math.Sin(index * Math.PI / 5);
}
Surface s = new Surface();
s.UseColorRange = false;
s.UsePalette = true;
s.PaletteStyle = PaletteStyles.Strong;
s.XValues.DateTime = true;
s.Add(xData, zData, yData);
tChart1.Series.Add(s);
}

[Sandra]

Hello skruegel,

I am afraid that using surface in your code, your application doesn't work fine for reasons that explain in this link. On the other hand, I recommend you use colorGrid Series, as do in next example code:

Code: Select all

 public Form1()
        {
            InitializeComponent();
            tChart1.Series.Clear();

            // Test data
            double[] yData = new double[10];
            double[] zData = new double[10];
            DateTime[] xData = new DateTime[10];
            for (int index = 0; index < 10; index  )
            {
                TimeSpan ts = new TimeSpan(index, 0, 0, 0);
                xData[index] = DateTime.Now   ts;
                yData[index] = index;
                zData[index] = 20 * Math.Sin(index * Math.PI / 5);
            }
           ColorGrid s = new ColorGrid();
            s.UseColorRange = false;
            s.UsePalette = true;
            s.PaletteStyle = PaletteStyles.Strong;
            s.XValues.DateTime = true;
            s.Add(xData, zData, yData);
            tChart1.Series.Add(s);

        }

Could you tell us if previous code works as you want?

I hope will helps.

Thanks,

[skruegel]

No, I'm afraid that sample does not produce the results I need. The following example works as I expect it would. The only difference between this example and what I require is that I need one axis to be a DateTime.

This produces something close to what I need:
public Form1()
{
InitializeComponent();
tChart1.Series.Clear();

// Test data
Surface s = new Surface();
double[] yData = new double[10];
double[] zData = new double[10];
double[] xData = new double[10];
for (int xIndex = 0; xIndex < 10; xIndex++)
{
//TimeSpan ts = new TimeSpan(dateIndex, 0, 0, 0);
//DateTime dt = DateTime.Now + ts;
//xData[dateIndex] = dateIndex;
for (int zIndex = 0; zIndex < 10; zIndex++)
{
//zData[zIndex] = zIndex;
double y = xIndex + zIndex;
s.Add(xIndex, 20 * y, zIndex);
}
}
s.IrregularGrid = true;
s.UseColorRange = false;
s.UsePalette = true;
s.PaletteStyle = PaletteStyles.Strong;
//s.XValues.DateTime = true;
tChart1.Series.Add(s);
}

So, I have a set of DateTimes, each of which contains two arrays of the same size. One of those arrays is the independent variable, and the other is the dependent variable. In my example, x would be the DateTime, z would be the independent variable, and y would be the dependent variable.

[Narcís]

Hi skruegel,

The problem is not with DateTime data it's that your data doesn't have a grid structure as described in the thread Sandra pointed you. Please notice that to plot a Surface series cell you'll need 4 points to define each cell's boundaries. Having said that, I think the easiest way to achieve what you requested is using code snippet below where a regular grid is added to the series but those points not being in the "diagonal" are set to null.

Code: Select all

        public Form1()
        {
            InitializeComponent();
            InitializeChart();
        }

        private void InitializeChart()
        {   
            Steema.TeeChart.Styles.Surface s = new Steema.TeeChart.Styles.Surface(tChart1.Chart);
            s.XValues.DateTime = true;

            for (int index = 0; index < 10; index++)
            {
                TimeSpan ts = new TimeSpan(index, 0, 0, 0);                

                for (int i = 0; i < 10; i++)
                {
                    DateTime x = DateTime.Now + ts;
                    double y = i;
                    double z = 20 * Math.Sin(index * Math.PI / 5);

                    int tmp = s.Add(x.ToOADate(), z, y);
                    if (i != index) s.SetNull(tmp);
                }
            }
        }