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    <div class="moz-cite-prefix">Thanks Bill for the tip anyway.<br>
      The upgrade of my code from 5.10.0 to 6 was on my todo list
      anyway.<br>
      Pof<br>
      <br>
      Le 30/11/2013 17:51, Bill Lorensen a &eacute;crit&nbsp;:<br>
    </div>
    <blockquote
cite="mid:CADZJ4hP=U55yd--pjDyYMgo75pdWdPGrQYh2EpqNFhE+0ctKwg@mail.gmail.com"
      type="cite">
      <div dir="ltr">No, looks like that was in vtk6.<br>
      </div>
      <div class="gmail_extra"><br>
        <br>
        <div class="gmail_quote">On Sat, Nov 30, 2013 at 11:11 AM, pof <span
            dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:jd379252@gmail.com" target="_blank">jd379252@gmail.com</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF">
              <div>Hi Bill,<br>
                Thanks, this looks pretty much like what I was looking
                for.<br>
                My mistake... I should have mentioned that I am using
                vtk5.10.0, in which apparently this method does not
                exist.<br>
                Is there any equivalent method in vtk5.10.0 ?<br>
                Thanks<br>
                Pof<br>
                &nbsp;<br>
                Le 30/11/2013 14:15, Bill Lorensen a &eacute;crit&nbsp;:<br>
              </div>
              <div>
                <div class="h5">
                  <blockquote type="cite">
                    <div dir="ltr">You can set the precision of the
                      output points:
                      <div><br>
                      </div>
                      <div>deci-&gt;SetOutputPointsPrecision(vtkAlgorithm::DOUBLE_PRECISION);</div>
                      <div><br>
                      </div>
                    </div>
                    <div class="gmail_extra"><br>
                      <br>
                      <div class="gmail_quote"> On Sat, Nov 30, 2013 at
                        5:11 AM, pof <span dir="ltr">&lt;<a
                            moz-do-not-send="true"
                            href="mailto:jd379252@gmail.com"
                            target="_blank">jd379252@gmail.com</a>&gt;</span>
                        wrote:<br>
                        <blockquote class="gmail_quote" style="margin:0
                          0 0 .8ex;border-left:1px #ccc
                          solid;padding-left:1ex">
                          <div text="#000000" bgcolor="#FFFFFF"> No
                            answer yet on this question.<br>
                            <br>
                            Just to mention this is a problem for me as
                            I'm working on meshes expressed in
                            geographical coordinates, i.e. sometimes
                            having large values (typically over 1e7)
                            which are unaccurately represented by float
                            variables.<br>
                            <div><br>
                              Any idea / comment ?<br>
                              <br>
                              <br>
                              -------- Message original --------
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                                <tbody>
                                  <tr>
                                    <th valign="BASELINE" align="RIGHT"
                                      nowrap="nowrap">Sujet: </th>
                                    <td>vtkDecimatePro not fully working
                                      with vtkDouble polydata</td>
                                  </tr>
                                  <tr>
                                    <th valign="BASELINE" align="RIGHT"
                                      nowrap="nowrap">Date&nbsp;: </th>
                                    <td>Wed, 27 Nov 2013 18:58:52 +0100</td>
                                  </tr>
                                  <tr>
                                    <th valign="BASELINE" align="RIGHT"
                                      nowrap="nowrap">De&nbsp;: </th>
                                    <td>pof <a moz-do-not-send="true"
                                        href="mailto:jd379252@gmail.com"
                                        target="_blank">&lt;jd379252@gmail.com&gt;</a></td>
                                  </tr>
                                  <tr>
                                    <th valign="BASELINE" align="RIGHT"
                                      nowrap="nowrap">Pour&nbsp;: </th>
                                    <td><a moz-do-not-send="true"
                                        href="mailto:vtkusers@vtk.org"
                                        target="_blank">vtkusers@vtk.org</a></td>
                                  </tr>
                                </tbody>
                              </table>
                              <div>
                                <div> <br>
                                  <br>
                                  <pre>Hi vtk'ers,

I have a mesh with points defined as vtkDouble:
    vtkPoints *MeshPoints = vtkPoints::New(VTK_DOUBLE);
and with a regular vtkCellArray:
    vtkCellArray *MeshCells = vtkCellArray::New();

The mesh is build as usual with:
    vtkPolyData *MeshPolyData;
    MeshPolyData-&gt;SetPoints(MeshPoints);
    MeshPolyData-&gt;SetPolys(MeshCells);

Now I need to perform a mesh decimation of this mesh, and I'm doing 
nothing special:
    vtkDecimatePro *deci = vtkDecimatePro::New();
    deci-&gt;SetInput(MeshPolyData);
    deci-&gt;SetTargetReduction(DecimationFactor);
    deci-&gt;PreserveTopologyOn();
    deci-&gt;BoundaryVertexDeletionOn();
    deci-&gt;SetMaximumError(VTK_DOUBLE_MAX);
    deci-&gt;Update();

The problem I am facing is that the resulting decimated mesh is actually 
based on vtkFloat:
    int type = deci-&gt;GetOutput()-&gt;GetPoints()-&gt;GetDataType();

i.e. type = 10 (VTK_FLOAT), wheras I would have expected 11 (VTK_DOUBLE) 
as for the original mesh.

I would have though that the data type of the decimated mesh should have 
been the same as the input mesh, which is not the case.
Is this a bug? Or have I missed something?

Thanks in advance for your help/advice.
Pof
</pre>
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                            Ce courrier &eacute;lectronique ne contient aucun
                            virus ou logiciel malveillant parce que la
                            protection <a moz-do-not-send="true"
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                                Ce courrier électronique ne contient aucun virus ou logiciel malveillant parce que la protection <a href="http://www.avast.com/">Antivirus avast!</a> est active.
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