[vtkusers] infovis graph weight as edge thickness

[Jeff Baumes]

Ahmed,

The graph layout view does not currently support varying the edge
width of each edge. But what I have found to be effective is to set
the opacity range of the lookup table for the edges to go from 0.0 to
1.0. This effectively makes higher-weight edges stand out more.

view->SetEdgeColorArrayName("your edge weight array");
view->ColorEdgesOn();

vtkViewTheme* theme = vtkViewTheme::New();
vtkLookupTable lut = vtkLookupTable::SafeDownCast(theme->GetCellLookupTable());
lut->SetOpacityRange(0.0, 1.0);
view->ApplyViewTheme(lut);

Jeff

On Sat, Sep 26, 2009 at 6:42 AM, Ahmed Saad <ahmedalysaad2004 at yahoo.com> wrote:
> Hello,
>  I'm using vtkMutableUndirectedGraph and vtkGraphLayoutView to render an undirected weighted graph. So How can we map the edge weights to edge thickness during the rendering?
>
> Thanks in advance
>
> Best regards,
> Ahmed Saad
>
>
>
>
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-- 
Jeff Baumes, Ph.D.
R&D Engineer, Kitware Inc.
(518) 881-4932
jeff.baumes at kitware.com