Question about GetAxisLabel

[Michal Blazejczyk]

Hi,

I have a plot, I'm using automatic axes. When I don't do anything special, the X axis is neatly divided and I get major ticks at -8, -6, -4, -2 and 0. What I want to do now is to slightly modify these labels - say, replace "0" with "zero". So I'm subscribing to the GetAxisLabel event and making my label change there.

The problem is that as a result my automatic axis is putting the major ticks at different X locations. My guess is that it looks at the lengths of my new labels and rearranges everything. But that's precisely what I don't want!

Any hints on how to modify my labels in GetAxisLabel but without changing the default automatic locations of the major labels?

[Narcís]

Hi Michal,

You can try setting labels separation to zero to make the labels being as close as possible.

Code: Select all

            tChart1.Axes.Bottom.Labels.Separation = 0;

If this is not enough then you may need to use custom labels as you can see in the All Features\Welcome !\Axes\Labels\Custom labels example in the features demo.

[Michal Blazejczyk]

Yes, but if I do this, my major ticks will still end up at different locations than where they are created automatically. What I would like is to keep the automatic tick locations but change some of the labels. The problem is that Axis.Labels is empty when I'm setting up my chart. Any solution?

[Narcís]

Hi Michal,

When using custom labels the ticks are also automatically placed. The features demo example ticks are not spaced equally because labels don't have regular increment. Try using something like this:

Code: Select all

		private void Form1_Load(object sender, EventArgs e)
		{
			tChart1.Aspect.View3D = false;

			Random val = new Random();

			for (int i = -8; i <= 0; i+=2)
			{
				line1.Add(i, val.Next());
			}

			AddCustomLabels();
		}

		private void AddCustomLabels()
		{
			tChart1.Axes.Bottom.Labels.Items.Clear();

			for (int i = 0; i < line1.Count; i++)
			{
				if (line1.XValues[i] == -8) tChart1.Axes.Bottom.Labels.Items.Add(line1.XValues[i], "minus eight");
				if (line1.XValues[i] == -6) tChart1.Axes.Bottom.Labels.Items.Add(line1.XValues[i], "minus six");
				if (line1.XValues[i] == -4) tChart1.Axes.Bottom.Labels.Items.Add(line1.XValues[i], "minus four");
				if (line1.XValues[i] == -2) tChart1.Axes.Bottom.Labels.Items.Add(line1.XValues[i], "minus two");
				if (line1.XValues[i] == 0) tChart1.Axes.Bottom.Labels.Items.Add(line1.XValues[i], "zero");
			}			
		}

Axis.Labels.Items is not empty when using custom labels.