[vtkusers] vtkXdmf3Writer index precision

[Paul Melis]

Thanks, David!
Looks like I need to build a 32-bit-ID version of VTK :-)

Paul


On 11/20/2017 11:03 PM, David E DeMarle wrote:
> As for xdmf3, yes the size of the compiled in ID type is what 
> determines it.
> See
> https://gitlab.kitware.com/vtk/vtk/blob/master/IO/Xdmf3/vtkXdmf3DataSet.cxx#L372
> where we check the size and then give over the pointer.
>
>
>
> David E DeMarle
> Kitware, Inc.
> Principal Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Thu, Nov 16, 2017 at 4:20 AM, Paul Melis <paul.melis at surfsara.nl 
> <mailto:paul.melis at surfsara.nl>> wrote:
>
>     Hi,
>
>     Is there a way to specify the integer precision of polydata index
>     arrays when using the Xdmf3 writer? For me, it's currently writing
>     out indices in 64 bits, which is a bit wasteful given the number
>     of vertices:
>
>     <?xml version="1.0" encoding="utf-8"?>
>     <Xdmf xmlns:xi="http://www.w3.org/2001/XInclude
>     <http://www.w3.org/2001/XInclude>" Version="3.3">
>       <Domain>
>         <Grid Name="Grid">
>           <Geometry Origin="" Type="XYZ">
>             <DataItem DataType="Float" Dimensions="39010488 3"
>     Format="HDF" Precision="4">region-rbc-9.h5:Data2</DataItem>
>           </Geometry>
>           <Topology Dimensions="77777920" Type="Mixed">
>             <DataItem DataType="Int" Dimensions="311111680"
>     Format="HDF" Precision="8">region-rbc-9.h5:Data3</DataItem>
>           </Topology>
>         </Grid>
>       </Domain>
>     </Xdmf>
>
>     Or is the output precision of (most) VTK writers fully determined
>     by the compiled-in ID type?
>
>     Thanks,
>     Paul
>
>     -- 
>
>     Paul Melis
>     | Visualization group leader & developer | SURFsara |
>     | Science Park 140 | 1098 XG Amsterdam |
>     | T 020 800 1312 | paul.melis at surfsara.nl
>     <mailto:paul.melis at surfsara.nl> | www.surfsara.nl
>     <http://www.surfsara.nl> |
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