<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman,new york,times,serif;font-size:12pt"><div>Here's what I have done:<br><br>//output is a vtkPolyData<br><br>int nbComponents = 2;<br><br>vtkSmartPointer<vtkFloatArray> dataToAdd = vtkSmartPointer<vtkFloatArray>::New();<br><br>vtkIdType nbElems = output->GetNumberOfCells(); <br>int size = nbElems * nbComponents;<br><br>dataToAdd->SetNumberOfComponents(2);<br>dataToAdd->SetNumberOfTuples(size);<br>dataToAdd->SetName(name);<br> <br>int cpt = 0;<br>for(unsigned int i = 0; i < values.size(); i += 2)<br>{<br> dataToAdd->InsertTuple2(cpt, values[i], values[i+1]); <br> cpt++;<br>}<br><br>output->GetCellData()->AddArray(dataToAdd); <br><br><br>Everything is ok and
I can see elements that are colored corresponding to the magnitude, x and y components.<br><br>But now, If I want to display gliph of these velocities I can't. Only attibutes attached to the points are presents. So, What is the way to display gliphs of attributes that are attached to some elements.<br><br>Thank you.<br></div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">De :</span></b> Andy Bauer <andy.bauer@kitware.com><br><b><span style="font-weight: bold;">À :</span></b> R M <mlokida@yahoo.fr><br><b><span style="font-weight: bold;">Cc :</span></b> paraview@paraview.org<br><b><span style="font-weight: bold;">Envoyé le :</span></b> Mar 12 octobre 2010, 19h 13min 16s<br><b><span style="font-weight: bold;">Objet :</span></b> Re:
[Paraview] How to add vector/scalar field as attributes to a vtkPointSet (vtkPolyData, ...)?<br></font><br><meta http-equiv="x-dns-prefetch-control" content="off">For the velocity array you'll need to set the number of components. You probably want to set the number of components to 3 for both 2D and 3D so that ParaView can manipulate the vector quantities (for 2D just set the last component to 0).<br>
<br>Using the glyph filter will give you arrows for showing the velocity magnitude and direction.<br><br><div class="gmail_quote">On Tue, Oct 12, 2010 at 12:08 PM, R M <span dir="ltr"><<a rel="nofollow" ymailto="mailto:mlokida@yahoo.fr" target="_blank" href="mailto:mlokida@yahoo.fr">mlokida@yahoo.fr</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div>Hi,<br>
<br>Like the title say, I would to like to add some attributes to a vtkPointSet (vtkPolyData and vtkUnstructuredGrid).<br>The attributes are vector(2D, 3D,...) field or scalar field. <br><br>For a scalar Field, If I want to add an attribute to the cells , I do: output->GetCellData()->AddArray( data) and output->GetPointData()->AddArray(donnees); for the points<br>
For the moment it is ok, because I can select them in Paraview.<br><br>But now, I have a 2D (or 3D) vector field (velocity) and I would to add the velocity field for the points or the cells. How can I do that ?<br>Moreover, if I want to show somme arrow (to show the direction of the vectors) should I use the glyph filter ?<br>
<br>Thank you.<br><br></div>
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