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Rad Chart - X axis dynamic width and bar width setting

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Jasvinder asked on 20 Sep 2010, 11:13 AM

badchart.jpg

I have a need to display dynamic items on X axis i.e form one item to n number of items (may go to 100 or more)

Y-Axis has a maximum value of 100 %

There can be more then one series on X-axis, maximum can go up to 5.

Problem I am facing is width of the bar is getting very big on x-axis if there are fewer items,
I have tried BarWidthPercentage it works, but not helpful for dynamic adjustments.

Need help to fit in my dynamic series and dynamic items on x-axis and the chart should look consistent.

I have used scrolling and X Scale property also, as I need the scrolling functionality.

Attached is the image for bad chart i am getting, there are more then 25 items and I have used scrolling,
the width of BAR is very large, the number of items in scroll is very less as only 10 items are viewable after
scrolling....

Kindly help in getting a good looking chart with lot of items and up-to 5 series dynamically, where all the calculation
is done on the rutime for width and formatting.

3 Answers, 1 is accepted

answered on 22 Sep 2010, 01:11 PM

Hi Jasvinder,

Indeed, RadChart is designed so that the bar width actually depends on the number of items. The more items -- the narrower the bars. This provides the necessary level of flexibility, so that the chart can handle multiple cases with minimum adjustments. Still, in cases like this one RadChart allows you to fix the bar width by fixing the XAxis range. You can use these two lines:

Copy Code

RadChart1.PlotArea.XAxis.AutoScale = false;

RadChart1.PlotArea.XAxis.AddRange(0, max, 1);

where max is defined by the max number of items in the underlying datasource. This way the X axis will always reserve space for max items, and even if there are less items in the chart the bars will not grow.

Kind regards,
Ves
the Telerik team

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