Hello all,<br><br>Here is how I read two cosmo files:<br><br>    vtkCosmoReader     *reader_1 = vtkCosmoReader::New(); <br>    vtkCosmoReader     *reader_2 = vtkCosmoReader::New();     <br>    <br>    vtkUnstructuredGrid  *cosmo_1 = vtkUnstructuredGrid::New();<br>
    vtkUnstructuredGrid  *cosmo_2 = vtkUnstructuredGrid::New();                        <br><br>    reader_1-&gt;SetFileName(cosmo_filename_1);<br>    reader_1-&gt;Update();<br>    cosmo_1 = reader_1-&gt;GetOutput(0);<br><br>
    reader_2-&gt;SetFileName(cosmo_filename_2);<br>    reader_2-&gt;Update();<br>    cosmo_2 = reader_2-&gt;GetOutput(0);<br><br>    double *point_1, *point_2;<br><br>    for (int i=0; i&lt;cosmo_1-&gt;GetNumberOfPoints(); i++)<br>
    {                <br>        point_1 = cosmo_1-&gt;GetPoint(i);<br>        point_2 = cosmo_2-&gt;GetPoint(i);<br>    }<br><br>Each point in cosmo file has a tag.<br><br>When I call GetPoint with i, do I get a point that has a tag=i?<br>
If not, what does this i mean?<br><br>Thank you,<br>Ula<br>