Hi Ondrej,

nice to see you here

Hi,

is there a way to have one plot with two functions, one using some

scale, the other one a different scale and show for example one scale

on the left, the other scale on the right?

sure, twinx() is what you're looking for; here is a simple example:

import matplotlib.pyplot as plt

import numpy as np

x = np.arange(0., np.e, 0.01)

y1 = np.exp(-x)

y2 = np.log(x)

fig = plt.figure()

ax1 = fig.add_subplot(111)

ax1.plot(x, y1)

ax1.set_ylabel('Y values for exp(-x)')

ax2 = ax1.twinx()

ax2.plot(x, y2, 'r')

ax2.set_xlim([0,np.e])

ax2.set_ylabel('Y values for ln(x)')

ax2.set_xlabel('Same X for both exp(-x) and ln(x)')

The values on X has to be of the same scale, tough, else the graph

would look really weird.

Cheers,

## ···

On Fri, Apr 24, 2009 at 22:02, Ondrej Certik <ondrej@...2033...> wrote:

--

Sandro Tosi (aka morph, morpheus, matrixhasu)

My website: http://matrixhasu.altervista.org/

Me at Debian: http://wiki.debian.org/SandroTosi