[Paraview] Data saving in vtr format and compression

[Zenker, Dr. Matthias]

Hi,

I need to convert legacy vtk files to vtr files. The vtk files are in ASCII format and approx. 17 MB large. When I use binary or ASCII as data mode, I get a file size of approx. 28 MB. When I use appended data mode without encoding, it's 20 MB. When I use encoding with ZLib compressor (there is only this one), the shinks to approx. 800 kB! Also data access is a lot faster when I load that file in ParaView.
My questions:

1.      Why does the file grow for most of the modes I have tried?
2.       Is the ZLib  compression used in ParaView lossless, or do I lose information when I apply it?

Thanks for some explanations...

Matthias



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