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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