[PyX-user] various user-specified colors for nested bars

[Guest2 C. <cer...@si...>]

Hello PyX-Users,

can anybody tell me how to use various user-specified
colors for comparing bar graphs? (cf. the "compare" example
at http://pyx.sourceforge.net/examples/bargraphs/index.html)

PyX-0.8.1 wouldn't accept handing multiple colors as
parameters to graph.style.bar(...). Inserting another
graph.style.bar(...) command between both graph.data.file(...)
commands was also refused.

Here's the code with just one user-specified color for both bars.

----------
from pyx import *

a =3D graph.axis.nestedbar(title=3D"x-axis")
g =3D graph.graphxy(width=3D10, x=3Da, height=3DNone,
     y=3Dgraph.axis.linear(title=3D"y-axis", min=3D0, max=3D10))

g.plot([graph.data.file("data.txt", xname=3D0, y=3D2),
        graph.data.file("data.txt", xname=3D0, y=3D3)],
        [graph.style.bar([color.rgb(0.7, 0.3, 0.5)])]
      )

g.writePDFfile("bar.pdf")
g.writeEPSfile("bar.eps")
----------

Any suggestions how to color both bars user-specifically?

Regards,
Arthur