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<p class="MsoNormal">I wrote a program in C++ with VTK and I basically did this: Read volume, create
<span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">vtkImageCanvasSource2D,
</span><span style="font-size:9.5pt;font-family:Consolas">manually access each point and add that value to the canvas, write the image using
<span style="color:#2B91AF">vtkPNGWriter.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas">I was unable to open any XDMF files using C++, so I changed to python. There are now three problems:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:9.5pt;font-family:Consolas"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>The volume, when using the interactor, seems to be way off the origin causing any roation I do to end in a huge swiping motion of the volume. I have been unable to find any method to re-center the volume even though when I open
it in the Paraview application it works well and is centered. <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:9.5pt;font-family:Consolas"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>What I am doing in the script is simply that I read the volume and Slice() the reader. Then I want to store that slice to a subarea of a canvas that I store as a PNG image file. I have been unable to find any canvas class, any
other storage class and I have not found a PNGwriter class. The only thing I have found has been a screenshot writer, something I so not want. I simply want to slice the volume n times along the Z axis and then save each slice to the canvas which, in turn,
is stored to disk. <o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-.25in;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="font-size:9.5pt;font-family:Consolas"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]>Finally, this might be me being stupid, but I have been unable to find any method to create a LUT filter and render those colours. I did try to
<b>“lut = GetLookupTableForArray("Blue to Red Rainbow", 10);”</b> and then add that to the actors LookupTable as follows:
<b>r = Show(volume); r.LookupTable = lut;</b> However, this has not had any effect on the rendered image.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Below you can see in Paraview what I want in the python script.<o:p></o:p></p>
<p class="MsoNormal"><a href="http://puu.sh/ruIGf/c54f458415.png">http://puu.sh/ruIGf/c54f458415.png</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Python I admit I am not too good with, but to add to that I am unable to autocomplete properly and I am also unable to see things like documentation and descriptions and open the class specifications using pvpython.exe. This causes me to
only be able to use what I find in the online documentation with minimal help. Paraview’s python interface is not up to the standard of the Paraview client.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you for your help.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yours,<o:p></o:p></p>
<p class="MsoNormal">Magnus Elden<o:p></o:p></p>
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