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 Tools for Microsoft .Net & .Net Compact Framework
 QCChart2D and QCChart2D CF (VB and C#)
 Suppress final zero		  New Topic  Reply to Topic
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jerzy

3 Posts
Posted - 21 Jun 2007 :  22:39:08  Show Profile  Reply with Quote
I use SetValidData method to suppress zeros so that they do not plot. This works if there is more than one zero, but if the dataset has only one final zero, I can not stop it from plotting. How can I suppress thios final zero?

jerzy

3 Posts
Posted - 22 Jun 2007 :  08:13:57  Show Profile  Reply with Quote
I reproduced the behavior I referred to in my earlier post using the "LabeledDatapoints" example. After the program code that calculates the 19 data points, I set y1(18) and y1(17)= 0.
I added a loop using SetValidData = false when y1 = 0.
This works: the plot ends after 17 points. When I then set only
y1(18) = 0, the plot shows this final zero.
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quinncurtis

1164 Posts
Posted - 22 Jun 2007 :  08:45:38  Show Profile  Reply with Quote
What you describe is a bug that we will fix it in the next update, 3-4 weeks. In the meantime your best alternative is to not include a data point as the last point in a dataset if you intend to mark it invalid anyway. Or once it is in the dataset you can just delete it.

if (Dataset1[18].Y == 0)
	Dataset1.DeleteDataPoint(18);
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quinncurtis

1164 Posts
Posted - 22 Jun 2007 :  10:32:06  Show Profile  Reply with Quote
An even better workaround is to just set the SegmentAttributesMode of the plot object, true;

SimpleLineMarkerPlot thePlot1 =
   new SimpleLineMarkerPlot(pTransform1, Dataset1,  ChartObj.SQUARE, attrib1,attrib2, 0, 1);

thePlot1.SetSegmentAttributesMode(true);


That change forces the line plot drawing routine to use routines that do not have the bug.
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jerzy

3 Posts
Posted - 22 Jun 2007 :  20:56:43  Show Profile  Reply with Quote
Thank you for the quick replies. The SetSegmentAttributesMode method gives the desired result

jerzy
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