Hi all,

I'm having trouble plotting functions were the domain aren't the real

numbers (R). Functions like x**-n, log(x), etc. Does anyone know if

there's a simple way of solving this problem. Here's a little script and

it's error:

from pylab import *

def f(x):

return log(x)

x = arange(-3, 4)

plot(x, f(x))

show()

Output:

Traceback (most recent call last):

File "test", line 7, in ?

plot(x, f(x))

File "/usr/lib/python2.4/site-packages/matplotlib/pylab.py", line

2019, in plot

ret = gca().plot(*args, **kwargs)

File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 2111,

in plot

self.autoscale_view(scalex=scalex, scaley=scaley)

File "/usr/lib/python2.4/site-packages/matplotlib/axes.py", line 975,

in autoscale_view

if scaley: self.set_ylim(locator.autoscale())

File "/usr/lib/python2.4/site-packages/matplotlib/ticker.py", line

839, in autoscale

return take(self.bin_boundaries(dmin, dmax), [0,-1])

File "/usr/lib/python2.4/site-packages/matplotlib/ticker.py", line

809, in bin_boundaries

scale, offset = scale_range(vmin, vmax, nbins)

File "/usr/lib/python2.4/site-packages/matplotlib/ticker.py", line

783, in scale_range

ex = divmod(math.log10(-meanv), 1)[0]

OverflowError: math range error

Thanks!