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Hi,<br>
<br>
I'm trying to pass string arrays stored in vtkPolyData sets through
the pipeline, using Python programmable filters.<br>
Below is a sample code :<br>
<br>
In a ProgrammableSource1 :<br>
<blockquote><i>output=self.GetOutput()</i>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>points=vtk.vtkPoints()</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>points.SetNumberOfPoints(1)</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>points.SetPoint(0,0,0,0)</i></p>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>stra=vtk.vtkStringArray()</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>stra.SetName("hop")</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>stra.Allocate(1)</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>stra.InsertNextValue("hop")</i></p>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>output.SetPoints(points)</i></p>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>output.GetPointData().AddArray(stra)</i></p>
</blockquote>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;">In a directly connected
ProgrammableFilter1 :</p>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i><i> input=self.GetInput()</i></p>
<i>
</i>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>
output=self.GetOutput()</i></p>
<i>
</i>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i></p>
<i>
</i>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>
output.SetPoints(input.GetPoints())</i></p>
<i>
</i>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>
output.GetPointData().CopyStructure(input.GetPointData())</i></p>
<i>
</i>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><i><br>
</i></p>
<i>
</i>
<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
margin-right:0px; -qt-block-indent:0; text-indent:0px;"><i>
print input.GetPointData().GetArray("hop")</i></p>
<p style="-qt-paragraph-type:empty; margin-top:0px;
margin-bottom:0px; margin-left:0px; margin-right:0px;
-qt-block-indent:0; text-indent:0px;"><br>
</p>
The result of the 'print' call at the end is "None", but should not
be in my understanding. If we do the exact same thing with a
vtkDoubleArray, it works.<br>
<br>
Any idea on this issue ?<br>
<br>
Thanks,<br>
<br>
Yves<br>
<br>
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