[vtkusers] VTU Compressed base64 Data

[Davis Wu]

Hi,

I have a VTU (unstructured grid) file that I’d like to parse myself. 

The header is as follows:
<VTKFile type='UnstructuredGrid' version='0.1' byte_order='LittleEndian' compressor='vtkZLibDataCompressor'>

And the AppendedData section looks like this:
<AppendedData encoding='base64'>
_AQAAAPD8AwDw/AMAA7wBAA==eNpcfXtYzE/U…
</AppendedData>

Running the appended data (excluding the first underscore) directly through a base64 decoder doesn’t appear to work. Running it through zlib uncompression doesn’t work either (invalid compressed data). So, I’m not sure where to start with this.

Any extra information about how to decompress and decode this appended data would be very helpful.

Regards,
Davis


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