<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div bgcolor="#ffffff" text="#000000"><div><div class="h5">David,</div></div>
<br>
It works fine with PointData and CellData; however I could not
figure out how to proceed with FieldData (There is no method
SetActive at this level in the hierarchy :-/, and my values are
attributes to one mesh (constant for a single mesh).<br>
Is there a way to proceed with vtkFieldData?<br>
<br>
---<br>
<br>
If not, I can use CellData instead. In this case, I can switch from
active scalar array to original mesh colors by setting it to one
that does not belong to the mesh:<br>
<br>
polydata->GetCellData->SetActiveScalars( "" );<br>
<br>
Is there a better way to proceed?<br>
<br>
Thanks,<br>
Arnaud</div></blockquote><div><br></div>The reason that you can't set active scalars on the FieldData is probably that it doesn't always make sense to apply arrays from the FieldData to the data because it is not necessarily "aligned" (the same length). </div>
<div class="gmail_quote"><br></div><div class="gmail_quote">Since it is a single color per object/mesh, can you color the actor based on the field data value (the 0th value in the array)?</div><div class="gmail_quote"><br>
</div><div class="gmail_quote">Something like: </div><div class="gmail_quote"><br></div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div class="gmail_quote">vtkFloatArray* colorArray = vtkFloatArray::SafeDownCast(polydata->GetFieldData()->GetArray("color1"));</div>
<div class="gmail_quote">float color[3];</div><div class="gmail_quote">colorArray->GetTupleValue(0, color);</div><div class="gmail_quote"><br></div><div class="gmail_quote"><span class="Apple-style-span" style="font-family: monospace; font-size: 12.5px; white-space: pre; ">actor<span class="sy2" style="color: rgb(0, 0, 64); ">-</span><span class="sy1" style="color: rgb(0, 0, 128); ">></span>GetProperty<span class="br0" style="color: rgb(0, 128, 0); ">(</span><span class="br0" style="color: rgb(0, 128, 0); ">)</span><span class="sy2" style="color: rgb(0, 0, 64); ">-</span><span class="sy1" style="color: rgb(0, 0, 128); ">></span>SetColor<span class="br0" style="color: rgb(0, 128, 0); ">(</span><span class="br0"><font class="Apple-style-span" color="#800080">color</font></span><span class="br0" style="color: rgb(0, 128, 0); ">)</span><span class="sy4" style="color: rgb(0, 128, 128); ">;</span></span><br>
<br></div><div class="gmail_quote">?</div><div class="gmail_quote"><br><div>David</div></div>