[GRASS-dev] Fwd: 2GB point file support

Helena Mitasova hmitaso at unity.ncsu.edu
Sun Apr 8 14:15:44 EDT 2007

I have been going through some unresolved issues that I am trying to  
keep track of
and I would like to ask whether the below is still true?
Has anybody worked vector data sets that are larger than 2GB?

thank you,


>> Begin forwarded message:
>>> From: Andrew Danner <adanner at cs.duke.edu>
>>> Date: June 30, 2006 6:16:41 PM EDT
>>> To: Helena Mitasova <hmitaso at unity.ncsu.edu>
>>> Subject: Re: Panama data
>>> [...]
>>> The bigger
>>> problem is that the vector library only supports 32-bit file   
>>> offsets, so
>>> you can't have point sets larger than 2GB. Fixing this requires much
>>> more work I think and may even break backwards compatibility, so it
>>> might be more of a grass7 change. I may have some more time to  
>>> look at
>>> code issues in grass in the fall instead of focusing solely on
>>> research
>>> issues.
>>> I think if we want a scalable v.surf.rst, we have to stick with   
>>> grass54
>>> (which is what I still run my larger tests on), which is a shame,
>>> because I like many of the grass6 features and the code layout is  
>>> much
>>> more logical. Alternatively, I can modify my code to get the  
>>> point  data
>>> directly from the ascii file like r.in.xyz does and skip the grass
>>> vector point import altogether. Ultimately, grass should support  
>>> large
>>> vector files, but that is easier said than done.
> ------------------
> ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
> ITC -> since 1 March 2007 Fondazione Bruno Kessler
> ------------------

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