[Paraview] error:Cannot volume render since no point (or cell) data available.

[Utkarsh Ayachit]

ParaView only supports volume rendering point data for 3D uniform grid
datasets. You can apply a cell-data-to-point-data filter and the then
volume render.

Utkarsh

On Wed, May 4, 2011 at 8:55 AM, pratik <pratik.mallya at gmail.com> wrote:
> Greetings,
> I loaded a scalar data (defined on a 3d grid) into paraview 3.10.1. When i
> try to change "Representation" to "Volume", i get the error:
>
> Cannot volume render since no point (or cell) data available.
>
> But this can't be true since the "Information" tab shows that:
>
> Statistics:
> type:Image(Uniform Rectilinear Grid)
> Number of Cells: 2048383
> Number of Points: 2146689
> Memory: 1.6e+02 MB
> and the data arrays do show the 2 dataitems that i read in; a scalar data S
> and a tensor data Q
>
> hmm..any ideas on why this is happening? Thanks in advance for the help.
>
> pratik
>
> P.S; I'll post part of the XDMF file here:
> <?xml version="1.0" ?>
> <!DOCTYPE Xdmf SYSTEM "Xdmf.dtd" []>
> <Xdmf>
>     <Domain Name="NemTens">
>         <Grid Name="NemTensTime" GridType="Collection"
> CollectionType="Temporal">
>
>             <Grid Name="NemTensValues" GridType="Uniform">
>                 <Time Value= "0" />
>                     <Topology TopologyType="3DCoRectMesh" Dimensions="128
> 128 128 9 "/>
>                     <Geometry GeometryType="ORIGIN_DXDYDZ">
>                             <DataItem DataType="Float" Dimensions="3"
> Format="XML">0.0 0.0 0.0</DataItem>
>                             <DataItem DataType="Float" Dimensions="3"
> Format="XML">0.1 0.1 0.1</DataItem>
>                     </Geometry>
>                     <Attribute Name="S" Center="Cell" AttributeType="Scalar"
> Precision="8">
>                         <DataItem Format="HDF" NumberType="Float"
> Dimensions="128 128 128" Precision="8">
>                             analtest.h5:/S_00000000
>                         </DataItem>
>                     </Attribute>
>                     <Attribute Name="Q" Center="Cell"
> AttributeType="Tensor" Precision="8">
>                         <DataItem  Format="HDF" NumberType="Float"
> Dimensions="128 128 128 9" Precision="8">
>                             Q.h5:/Q/Q_00000000
>                         </DataItem>
>                     </Attribute>
>             </Grid>
> </Grid>
>     </Domain>
> </Xdmf>
>
> this is for the first timestep only
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>
>