gallery/graphs/shift.py

   1 # You can manually set the subaxes and exceed the axes ranges.
   2 # The width of the regular axes can be modified by a size paramater.
   3 # While most axes do not have a size parameter, it can be added to
   4 # any existing axis very easily. For linear axes so called sizedlinear
   5 # and autosizedlinear axes are defined by PyX already.
   6 #
   7 # Note: The mytuple/lambda construct is currently a work-around to
   8 # create tuples within the mathtree expression evaluator.
   9
  10 from pyx import *
  11
  12 subaxes = [graph.axis.linear(max=1),
  13            graph.axis.linear(max=1),
  14            graph.axis.sizedlinear(size=3, min=0, max=3)]
  15
  16 g = graph.graphxy(width=8, y=graph.axis.split(subaxes=subaxes))
  17 g.plot([graph.data.file("shift.dat", x=1, y="mktuple(i, $(i+2))",
  18                         context={"mktuple": lambda x, y: (x, y), "i": i})
  19         for i in range(3)], [graph.style.line()])
  20 g.writeEPSfile("shift")
  21 g.writePDFfile("shift")