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pgf backend doesn't work well with very large numbers #1857

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elenril opened this issue Mar 26, 2013 · 3 comments
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pgf backend doesn't work well with very large numbers #1857

elenril opened this issue Mar 26, 2013 · 3 comments
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@pwuertz

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@elenril
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elenril commented Mar 26, 2013

When plotting data with very large values (in my use case I have around 10^55), the pgf backend produces files on which latex chokes saying:

! Number too big.
13653335517
866810233117889238902434402615404068235693260800.000000in
l.97 ...8902434402615404068235693260800.000000in}}
%
I can only go up to 2147483647='17777777777="7FFFFFFF,
so I'm using that number instead of yours.

From a quick look at the code, it apparrently just sets the clipping rectangle and just passes then numbers through otherwise. I suppose some clipping should happen in the backend itself.
@mdboom
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mdboom commented Mar 26, 2013

@pwuertz : I haven't looked into this in depth, but thought I might provide a pointer: matplotlib does have algorithms to clip paths to a rectangle that may be useful here. See Path.iter_segments which has a clip kwarg.

@ghost ghost assigned pwuertz Mar 26, 2013
@pwuertz pwuertz mentioned this issue Mar 26, 2013
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@pwuertz
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pwuertz commented Mar 26, 2013

Thanks for the hint mdboom!
@elenril: Does that patch fix the problem you are seeing or can you post an example that triggers the error?

@elenril
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elenril commented Mar 28, 2013

@pwuertz thanks for the fix, it seems to work for me.

pelson added a commit that referenced this issue Apr 18, 2013
@pelson
Merge pull request #1858 from pwuertz/pgf_path_clip
6e94330 
backend_pgf: clip paths within the backend (fixes #1857)
@daradib daradib mentioned this issue Mar 3, 2014
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@pwuertz pwuertz mentioned this issue Mar 11, 2014
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