I believe it is an easy thing to do but I haven't figured out how to convert between coordinate systems using transData or transAxes. Here is the simple_plot.py

import numpy

import pylab

x = numpy.arange(0.0, 1.0+0.01, 0.01)

y = numpy.cos(2*2*numpy.pi*x)

pylab.plot(x, y)

Here I want to transform y1 to axis scale between 0 and 1.

Also, I want to transform axis scale, say 0.25, to a corresponding y value in the data coordinates.

pylab.show()

Currently I am doing it manually scaling things with axis limits, etc. I believe the neat thing is to use the transforms api. Can somebody explain me how it is done with transforms? I am using 0.98.1.

Thanks in advance,

Nihat