[PyX-user] Style in symbols and errorbars for different datasets

[Dani M. <dan...@up...>]

Hi everyone,

I'd like to thank first the developpers for this nice package. The
figures one can generate with PyX are simply impressive, and I hope PyX
will improve definitively the quality of published figures in the same
way TeX once did with document typesetting.

I have to represent different datasets in one single figure. Every
dataset consists on a list of points, each with its corresponding
error:

     dataset[0] = [ [x01, y01, dy01], [x02, y02, dy02] ...]
     dataset[1] = [ [x11, y11, dy11], [x12, y12, dy12] ...]
     ...

I represent these as symbols with error bars.  Ignoring any style
customization the snippet to achieve this would be something like:

   fig.plot([graph.data.list(dataset[i], x=1, y=2, dy=3) for i in
	   range(len(dataset_num)], 
	    [graph.style.symbol(), graph.style.errorbar()])

Here is my question:

I want the datasets to be plotted in different colors. How can I plot
the symbols and errorbars with the same color, within a dataset? (this
is a sort of symbol+errorbar version of the change.py example given at
http://pyx.sourceforge.net/examples/graphs/index.html).

I've struggled a bit with the lists, the examples and the documentation
but I haven't managed to get an answer.

Thanks a lot,

dani