Why do I only have 2 labels on left axis?

[Dave]

Hi

Ive set the following to define the left axis;

myChart.Axes.Left.Labels.Exponent = true;
myChart.Axes.Left.Labels.ValueFormat = "00e-0";


However when I plot a curve on the line only 2 labels are shown; 0 and 1.3(e-13) despite the fact my plot extend from e-15 to e-18

Do I need to set some value to have more labels shown on the left axis

Thanks!

[Dave]

Anyone with any ideas?

It seems like when you do;

myChart.Axes.Left.Labels.Exponent = true


The labels don't display. However if

myChart.Axes.Left.Labels.Exponent = false


then the labels do show but they are all zero because the values are so tiny.

[Dave]

I wrote a test program and the following worked.

spectrumChart.Axes.Left.Labels.Exponent = true;
spectrumChart.Axes.Left.Labels.ValueFormat = "#.0 \"x10\" E+0";


Will test on our own project later.

[Christopher]

Dave,

spectrumChart.Axes.Left.Labels.Exponent = true;
spectrumChart.Axes.Left.Labels.ValueFormat = "#.0 \"x10\" E+0";


Will test on our own project later.

Please let us know if we can help you further in this area.

[Dave]

Hi Christopher

Apparently it works fine when the exponent is -10 or less. However for -10,-11, 12 etc the labels aren't displayed. We've got round this by labelling the axis uJ instead of J. So weve effectively multiplied the values by 1 million and everything is ok. This issue may have been fixed in a later version of Teechart. The one we are using is about 4 years old I think.

[Christopher]

The one we are using is about 4 years old I think.

In the latest release, the following code:

private void InitializeChart()
{
tChart1.Aspect.View3D = false;
tChart1.Legend.Visible = false;
Line series1 = new Line(tChart1.Chart);
Random rnd = new Random();

for (int i = 0; i < 10; i++)
{
series1.Add(i, rnd.NextDouble() * 10000000000000);
}

tChart1.Axes.Left.Labels.Exponent = true;
tChart1.Axes.Left.Labels.ValueFormat = "#.0 \"x10\" E+0";
}

gives this:

exponential.PNG (22.51 KiB) Viewed 12817 times

[Dave]

Hi Christopher

We are using TeeChart version 3.5.3187.15585 and C#.NET

Bizarrely we found if the exponent was too small it didn't draw the labels. We have it working fine now by changing the units which allowed us to reduce the exponent.

[Christopher]

Hello Dave,

We are using TeeChart version 3.5.3187.15585 and C#.NET

You may consider upgrading your version of TeeChart to enjoy all the improvements that have been made to it over the years