Steema Central

Posted: **Fri May 08, 2015 9:44 am**

I'm trying to add an Error series to a chart.
Here's a simple example:

tChart1.Axes.Bottom.Automatic = false;
tChart1.Axes.Bottom.Minimum = 0.0;
tChart1.Axes.Bottom.Maximum = 10.0;
var error1 = new Steema.TeeChart.Styles.Error(tChart1.Chart);
error1.SideMargins = false;
error1.ErrorStyle = Steema.TeeChart.Styles.ErrorStyles.LeftRight;
error1.Add(1.0, 5.0, 0.5);
tChart1.Series.Add(error1);

However, the range of the bottom axis is changed from the specified values (0 ... 10 in this example) to some arbitrary values (-12.5 ... 22.5 in this case).
I need to use a fixed axis minimum/maximum in my application.
How can I get a correct behaviour of the bottom axis?

I'm using TeeChart v4.1.2015.3113

Posted: **Mon May 11, 2015 8:41 am**

Hello,

The situation can be ameliorated by using manual values for the axis minimum and maximum values, e.g.

Code: Select all

		private void InitializeChart()
		{
			tChart1.Axes.Bottom.Automatic = false;
			tChart1.Axes.Bottom.Minimum = 0.0;
			tChart1.Axes.Bottom.Maximum = 10.0;
			var error1 = new Steema.TeeChart.Styles.Error(tChart1.Chart);
			error1.SideMargins = false;
			error1.ErrorStyle = Steema.TeeChart.Styles.ErrorStyles.LeftRight;
			error1.Add(1.0, 5.0, 0.5);
			tChart1.Series.Add(error1);

			tChart1.Axes.Bottom.SetMinMax(error1.ErrorValues[0] * -1, error1.ErrorValues[0]);
		}

Unfortunately, as highlighted in this thread, there is a limitation in the Error series for bottom axis precision because the series itself modified minimum and maximum values in order to be able to draw itself, however, steps can be taken to redress this, e.g.

Code: Select all

		private void InitializeChart()
		{
			var error1 = new Error(tChart1.Chart);
			error1.ErrorStyle = Steema.TeeChart.Styles.ErrorStyles.LeftRight;
			error1.Add(1.0, 5.0, 0.5);
                        tChart1.Series.Add(error1);

			error1.CustomBarWidth = 200;

			tChart1.Axes.Bottom.MaximumOffset = -(error1.CustomBarWidth / 10);
			tChart1.Axes.Bottom.MinimumOffset = -(error1.CustomBarWidth / 10);
			tChart1.Axes.Bottom.SetMinMax(0, 10);
		}

Posted: **Tue May 12, 2015 2:28 pm**

Hello,
just setting CustomBarWidth indeed seems to do the trick, thanks.

Steema Central

Incorrect bottom axis range for Error series

Incorrect bottom axis range for Error series

Re: Incorrect bottom axis range for Error series

Re: Incorrect bottom axis range for Error series