Hi Markus,
On 23.02.06, Markus Meyer wrote:
> I'd like to have a bar-graph which has a line for y=0 in the middle, and
> bars above and under the line. However, a small test for this
> functionality looks totally wrong. What gives?
The bar style needs a bar position as provided by the parpos style.
Unfortunately this style by default always start bars at the baseline.
Thus you have to do:
> from pyx import *
>
> g = graph.graphxy(width=8, x=graph.axis.bar())
> g.plot(graph.data.list([(0,-2), (1, -3), (2, 5), (3, -4)], xname=0, y=2),
> [graph.style.bar()])
[graph.style.barpos(fromvalue=0), graph.style.bar()])
> g.writePDFfile("bar")
HTH,
André
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