<div dir="ltr"><div style>vtkContourFilter can produce multiple isocontours via the setnumberofContours and setValues methods.</div><div style><br></div><div style>vtkClipDataSet will produce slices.</div><div style><br></div>
<div style>google search them to find the doxygen, read that and then look for the examples and tests lists to see them in use.</div><div style><br></div>Let me suggest some approaches first though.<div style><br></div><div style>
Once you've made the structured points from your data, use vtkDataSetWriter to write that data to a file. Then open it up with ParaView and use the GUI to create visualizations. This will get you going very quickly.</div>
<div style><br></div><div style>The next easiest thing to do is get a hold of python wrapped vtk and set up your paths such that it is useable within Idle. A python IDE with tab completion is the next easiest way I know of to learn VTK since introspection brings all of the doxygen help for every object to your fingertips and experimentation takes place as quickly as you can type.</div>
<div style><br></div><div style>good luck and welcome to VTK!</div></div><div class="gmail_extra"><br clear="all"><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>
Phone: 518-881-4909</div>
<br><br><div class="gmail_quote">On Tue, Mar 26, 2013 at 12:05 PM, Curator <span dir="ltr"><<a href="mailto:curator@gmx.de" target="_blank">curator@gmx.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi all,<br>
<br>
I'm kind of new to the data visualization of complex 3D data. Up to now, I only used simple shapes as cubes and spheres etc., which worked perfectly. However, now I am running into visualizing my simulation results, which is simply a three dimensional, equally distanced grid with single numeric values at each grid point.<br>
<br>
So far, I managed to a plot multiple iso surfaces by storing the data in a vtkFloatArray und aligning them by vtkStructuredPoints. Furthermore, I used the vtkContourFilter.<br>
<br>
Now, from the same data, I would like to add variable data slices in the xy, yz, and xz plane. Also, I think my implementation of a (single) iso surface is not efficient, because I generate the values for the contour filter by setting identical maximum and minimum values.<br>
<br>
In general, I am interested in a visualization like in <a href="http://vis.lbl.gov/Research/ChomboVis99/vtk-initial.html" target="_blank">http://vis.lbl.gov/Research/<u></u>ChomboVis99/vtk-initial.html</a>, but there I do not find further information.<br>
<br>
So,<br>
<br>
1) Is it clever to store my data in a vtkFloatArray and align them by vtkStructuredPoints?<br>
2) Is a vtkContourFilter the right tool show _one_ isosurface for a specified value?<br>
3) Which Filter should be used for the data slices?<br>
4) Which Filter do I have to use for something like <a href="http://vis.lbl.gov/Research/ChomboVis99/misc-art/vtk-volume.gif" target="_blank">http://vis.lbl.gov/Research/<u></u>ChomboVis99/misc-art/vtk-<u></u>volume.gif</a> ?<br>
<br>
Thank you for any help,<br>
<br>
regards,<br>
curator<br>
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