Changing the legend values in surface or colorgrid

[Matt G]

Hello,

I am having a hard time with formatting the legend with both surface or colorgrid (mayb others, haven't tried yet).

I want to force the legend to span the values that I am interested in, but can't find a way. Also, I can't format the legend to use reasonable significant digits (always defaults to ##.####).

Is there a way to do this?

Also, can I make the depth axis (dependant variable) logarithmic in the legend?

My data spans several orders of magnitude and the ability to do this is important to me.

Thanks,
Matt

[Marjan]

Hi, Matt.

As far as custom palette goes, you can use the following code:

Code: Select all

			// populate series with data
      for (int i = -5; i<5; i++)
        for (int j = -3; j < 5; j++)
          surface1.Add(i,2.5*Math.Sin(Math.PI*Math.Pow(i*j,2)/10.0),j);

      // create custom palette
      surface1.UsePalette = true;
      surface1.UseColorRange = false;
      surface1.ClearPalette();
      // beige from -2.5 to -2.0
      surface1.AddPalette(-2.0,Color.Beige);
      // white from -2.0 to 0.0
      surface1.AddPalette(0.0,Color.White);
      // blue from 0.0 to to to 2.0
      surface1.AddPalette(2.0,Color.Blue);
      // violet from 2.0 to 2.5
      surface1.AddPalette(2.5,Color.Violet);          

For logarithmic depth axis, you could use the following code:

Code: Select all

tChart1.Axes.Depth.Logarithmic = true;

But please be aware that number of points in surface series in any direction is limited to 2000 points.

[Matt G]

Sounds great, but there is no .AddPalette function in VB....

Is there a more recent release that includes this?

Thanks,
Matt

[Matt G]

I down loaded the latest version. It has it. but things don't seem to work the same now...

[Marjan]

Hi, Matt.

Can you be a bit more specific ? The palette is not constructed correctly or ... ?

[Matt G]

It seems with the new version, I cannot add data the same way.

Before I would add a series at design time (default name surface1). Then I would use:

Surface1.Add (myX, myY,myZ)

The default names are now series0,series1, ... which is fine, but I can't figure out how to address them now!

Even using AxTchart1.Series0.Add does not work.

Thanks,
Matt

[Marjan]

Hi, Matt.

AxTchart1.Series0

This won't work in any case. Instead, if you created series0 and series1 you should use the:

Code: Select all

series0.Add(....);

But using the latest available build I was not able to replicate the problem i.e. when I added new surface series, it was named as surface1 and not as series0.