3
from pyx.graph import axis
5
xgridpainter = axis.painter.regular(gridattrs=[])
6
ygridpainter = axis.painter.regular(gridattrs=[attr.changelist([style.linestyle.dashed, None])])
8
g = graph.graphxy(width=10,
9
x=axis.lin(painter=xgridpainter,
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divisor=pi, texter=axis.texter.rational(suffix=r"\pi"), min=-4*pi, max=4*pi),
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y=axis.lin(painter=ygridpainter))
13
g.plot(graph.data.function("y(x)=sin(x)/x", points=200))