examples/axis/log.py

   1 import math
   2 from pyx import *
   3 from pyx.graph import axis
   4
   5 p = path.curve(0, 0, 3, 0, 1, 4, 4, 4)
   6
   7 log2parter = axis.parter.log([axis.parter.preexp([axis.tick.rational(1)], 4),
   8                               axis.parter.preexp([axis.tick.rational(1)], 2)])
   9 log2texter = axis.texter.exponential(nomantissaexp=r"{2^{%s}}",
  10                                      mantissamax=axis.tick.rational(2))
  11
  12 c = canvas.canvas()
  13 c.insert(axis.pathaxis(p, axis.log(min=1, max=1024)))
  14 c.insert(axis.pathaxis(p.transformed(trafo.translate(4, 0)),
  15                        axis.log(min=1, max=1024, parter=log2parter)))
  16 c.insert(axis.pathaxis(p.transformed(trafo.translate(8, 0)),
  17                        axis.log(min=1, max=1024, parter=log2parter,
  18                                 texter=log2texter)))
  19 c.writeEPSfile("log")
  20 c.writePDFfile("log")