gallery/graphs/manyaxes.py

   1 import math, random
   2 from pyx import *
   3
   4 # a xy-graph has linear x and y axes by default
   5 # they might be overwritten and futher axes might be added as well
   6 g = graph.graphxy(width=8, y=graph.axis.log(), y2=graph.axis.lin(),
   7                   y3=graph.axis.lin(min=0, max=1),
   8                   y4=graph.axis.lin(min=0, max=2))
   9
  10 # we generate some data and a function with multiple arguments
  11 d = [[i, math.exp(0.8*i+random.random())] for i in range(1,10)]
  12 f = lambda x, a: x*a
  13
  14 g.plot(graph.data.points(d, x=1, y=2))
  15 g.plot(graph.data.function("y2(x)=f(x, 1)", context=locals()))
  16
  17 g.plot(graph.data.function("x(y3)=5+sin(2*pi*y3)"))
  18 g.plot(graph.data.function("x(y4)=5+sin(2*pi*y4)"))
  19
  20 g.writeEPSfile("manyaxes")
  21 g.writePDFfile("manyaxes")