[Paraview] [EXTERNAL] Decode a vtu file

[Andi Hartarto]

Dear Kenneth,

Thank you for helping but i didn't mean understanding the text document if
that is what you mean.
I mean I want to access the appended data in base 64.

Maybe in command module somehow
(code to show the data)
data ..

Thank you,
Andi

On 14 January 2017 at 03:49, Moreland, Kenneth <kmorel at sandia.gov> wrote:

> Documentation for vtu file format (and several other standard VTK formats)
> is here:
>
>
>
> http://www.vtk.org/VTK/img/file-formats.pdf
>
>
>
> -Ken
>
>
>
> *From:* ParaView [mailto:paraview-bounces at paraview.org] *On Behalf Of *Andi
> Hartarto
> *Sent:* Thursday, January 12, 2017 7:54 PM
> *To:* paraview at paraview.org
> *Subject:* [EXTERNAL] [Paraview] Decode a vtu file
>
>
>
> Hello all,
>
> Can I please have guidance/help in decoding a vtu file?
>
> My file is a
>
> <?xml version="1.0"?>
>
> <VTKFile type="UnstructuredGrid" version="0.1" byte_order="LittleEndian"
> compressor="vtkZLibDataCompressor">
>
>   <UnstructuredGrid>
>
>     <Piece NumberOfPoints="116"                  NumberOfCells="1052"
>            >
>
>       <PointData>
>
>       </PointData>
>
>       <CellData>
>
>         <DataArray type="Int32" Name="TetrahedraRank" format="appended"
> RangeMin="1"                    RangeMax="2"                    offset="0"
>                   />
>
>         <DataArray type="Int32" Name="TetrahedraNo" format="appended"
> RangeMin="0"                    RangeMax="262"
>  offset="188"                 />
>
>       </CellData>
>
>       <Points>
>
>         <DataArray type="Float32" Name="Points" NumberOfComponents="3"
> format="appended" RangeMin="2003013.3465"         RangeMax="2003224.1668"
>       offset="812"                 />
>
>       </Points>
>
>       <Cells>
>
>         <DataArray type="Int64" Name="connectivity" format="appended"
> RangeMin=""                     RangeMax=""
> offset="1680"                />
>
>         <DataArray type="Int64" Name="offsets" format="appended"
> RangeMin=""                     RangeMax=""
> offset="5892"                />
>
>         <DataArray type="UInt8" Name="types" format="appended" RangeMin=""
>                     RangeMax=""                     offset="8116"
>      />
>
>       </Cells>
>
>     </Piece>
>
>   </UnstructuredGrid>
>
>   <AppendedData encoding="base64">
>
>   (data long list)
>
>
> The file can be found in this link:
> https://drive.google.com/open?id=0BzmZiSDoM7l3U2poYWNTbUhBWVU
>
> I don't understand how to decode a vtk file and couldn't find anything in
> google. I've tried using some scripts in python for base64 but it didn't
> work..
>
> The reason why I need to decode this is because somehow this vtk file
> which load in paraview perfectly becomes a 2d file in another software
> "MOOSE" .. So I think somehow in the encoded data is telling the other
> software "only display the 2D intersection of blocks". But I want a 3D cube
> not a 2D surface. If someone knows about this please tell me .
>
> Thank you,
> Andi
>
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