[Nplot-devel] [ nplot-Bugs-1688713 ] Problems ploting single point

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Bugs item #1688713, was opened at 2007-03-26 20:19
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: randalx (randalx)
Assigned to: Nobody/Anonymous (nobody)
Summary: Problems ploting single point

Initial Comment:
Hi,

My program plots various LinePlots and PointPlots using the AbscissaData and OrdinateData.  The data can change based on user interaction.  A bug occurs when the data is for only one point.  

First there is an exception in 
DateTimeAxis.cs 
void DrawTicks(...)
{
...
PointF lastPos = WorldToPhysical((double)largeTicks[0], physicalMin, physicalMax, true);//ed

The exception is due to accessing largeTicks[0].  The previous call to WorldTickPositions() fails to add any data to the largeTicks array.

A quick fix was to add the following code:
if (largeTicks.Count <= 0) { return; }

But the result is not very satisfactory as I'd still like to see the point plotted.  My temporary hack was to adjust the XAxis1.WorldMax and XAxis1.WorldMin by 100 so as to show a centered point but this is far from ideal.

Thanks,
Randal




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You can respond by visiting: 
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