Hi Axel,
I did try adding in a comma option to the regexp earlier (although without the
whitespace, as I never have any) and couldn't get it working, probably just
some
syntax error I couldn't find. :p
Anyway, that works a treat now, thanks very much!
Tara
Axel Freyn wrote:
> Hi Tara,
> On Wed, Mar 17, 2010 at 05:05:10PM +0000, Tara Gilliam wrote:
>> Hi,
>>
>> I've been trying to plot a nested bar chart from some data in a csv file.
>> I couldn't find a simple way to swap the column separator from whitespace
>> to comma (I tried tweaking the regexp for the columnpattern, but couldn't
>> get it to work), so I've ended up using graph.data.list instead.
> Well, there I know a solution:
> If you use "(.*?)(,\s*|\s+|$)" as columnpattern, he will understand:
> 1,2
> 1, 2
> 1, 2
> 1 2
> 1 2
> so:
> - a commma, followed by an arbitrary (0 or more) number of spaces
> - no comma, but one or more spaces
>
> you can change this separator within one file. The generalized
> "minimal.py" reads:
>
> import re
> from pyx import *
> g = graph.graphxy(width=8)
> g.plot(graph.data.file("minimal.dat",
> g.plot(graph.data.file("minimal.dat",
> columnpattern=re.compile(r"(.*?)(,\s*|\s+|$)"), x=1, y=2))
> g.writeEPSfile("minimal")
> g.writePDFfile("minimal")
>
> HTH,
>
> Axel
>
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