|
 Rotating a Meter chart... |
| Posted by Patrick on Jan-25-2015 12:53 |
|
I am attempting to rotate a chart like this...
' output the chart
Response.ContentType = "image/png"
m.makeChart3().rotate(-90.0)
Response.BinaryWrite(m.makeChart2(Chart.PNG))
Response.End()
However, I get the following error:
[IndexOutOfRangeException: Index was outside the bounds of the array.]
ChartDirector.DrawArea.rotate(Double angle, Int32 bgColor, Double cx, Double cy,
Int32 ft, Double blur) +2679
ChartDirector.DrawArea.rotate(Double angle) +62
ASP.reports_pdt_eiq_vert_aspx.__Render__control1(HtmlTextWriter __w, Control
parameterContainer) in
C:\\Users\\Pat\\Documents\\dev.leadingdimensions.com\\reports\\PDT\\EIQ-vert.aspx:56
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection
children) +268
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +8
System.Web.UI.Page.Render(HtmlTextWriter writer) +29
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter
adapter) +57
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
+100
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint,
Boolean includeStagesAfterAsyncPoint) +1386
It's as if I'm attempting to access an array with the degrees argument in rotate()
Thank you! |
| Re: Rotating a Meter chart... |
| Posted by Patrick on Jan-25-2015 13:05 |
|
I also tried:
Dim dw As ChartDirector.DrawArea = m.getDrawArea()
dw.rotate(-90.0, &HFFFFFF, -1, -1, Chart.LinearFilter, 1)
' output the chart
Response.ContentType = "image/png"
Response.BinaryWrite(m.makeChart2(Chart.PNG))
Response.End()
and got the same error message.
Thanks! |
| Re: Rotating a Meter chart... |
| Posted by Patrick on Jan-25-2015 13:21 |
|
Now this worked:
m.makeChart3().rotate(89.999999999, &HFFFFFF, -1, -1, Chart.LinearFilter, 1)
But if I use 90.0 as the degrees, I get the index out of range error shown above.
Am I doing something wrong?
Pat |
| Re: Rotating a Meter chart... |
| Posted by Peter Kwan on Jan-27-2015 02:57 |
|
Hi Patrick,
This is in fact due to a bug in ChartDirector which occurs when rotating by -90 degrees.
ChartDirector has special optimization code for certain rotation angles, like, 0, 90, 180, 270
(-90 is the same as 270). We have just discovered there is a bug in the optimization for 270
degrees, causing the problem. If the angle is not -90 (such as -89.99), then the
optimization is not used and so it does not occur.
We will fix this in next version of ChartDirector. In the meantime, I suggest to use -89.9999
for that rotation angle.
Regards
Peter Kwan |
|
Forum Home
Search
Message List
Post Message