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Enum values on the y-axis
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Autolog
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Autolog asked on 02 Jul 2010, 12:12 PM
Hi,

I some simple data with a date and an enum value, and I want a graph showing this data over time, with date on the x-axis and the enum value on the y-axis.

However simply specifying the field name as normal

<telerik:ItemMapping DataPointMember="YValue" FieldName="BrakeSwitch" ...

does not work. The graph shows nothing on the y-axis.

Any ideas?

brgds,
Thomas Scheelhardt

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Nikolay
Telerik team
answered on 07 Jul 2010, 08:53 AM
Hello Thomas,

Mapping enum values to the Y-Axis would not display any data, as YValue DataPointMember expects a numeric value, which would define the position of the point in the graph.The numeric value is usually measured by one of the axes and the criteria - placed along the other one. 

A possible work-around would be introducing a fake YValue for your items, which would refer to the specific values you want to display along the Y-Axis and then customizing the axis so that it show these values as labels. You can customize the Y-Axis by setting the AutoRange property to false, then call the AddRange method and finally loop through axis' Ticks collection to update their labels.

Hope this helps.

All the best,
Nikolay
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Autolog
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answered on 07 Jul 2010, 10:17 AM
Hi,

Thanks for the reply.
Technically speaking enums are numeric values, but simply showing the name of the enum values would likely not satisfy requirements, so setting the tick labels explicitly is much better.

In other words the suggested solution does exactly what I needed.

A minor correction is that it is obviously the Y-axis TickPoints that the labels should be changed for.
It also has to be done in code behind after the InitializeComponent so that the TickPoints are actually there. Doing it in xaml will fail.

brgds,
Thomas Scheelhardt
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answered on 29 Aug 2010, 09:38 PM
how to remove following items from the image ?

help me please.
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Nikolay
Telerik team
answered on 01 Sep 2010, 01:07 PM
Hi 1897,

Here is a an example code snippet demonstrating how to hide the labels and point-marks :
LineSeriesDefinition lineDef = new LineSeriesDefinition();
lineDef.ShowPointMarks = false;
lineDef.ShowItemLabels = false;

For more information, here is an example demonstrating how to hide labels, and in this example you can see how to hide the point-marks.

Hope this helps.

Best wishes,
Nikolay
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answered on 01 Sep 2010, 05:25 PM
thanks Nikolay , I already found it :))
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