x and y axis through (0,0)


Thanks very much for matplotlib its fast becoming the main tool I use for plotting!
I'm fairly new to matplotlib so apologies if this seems like an obvious question. I'm plotting a fairly standard scatter plot using plot.
something like....


and my data is normalised so ([-1,1],[-1,1]).

How can I create a plot with x and y axis (inc ticks and labels) through the origin (0,0)?

Many thanks for any help


Dr David Cameron
Centre for Ecology and Hydrology - Edinburgh
Bush Estate
Penicuik, Midlothian
EH26 0QB, UK
Tel: +44/0 131 445-8577 Fax: -3943
Email: dcam@...736...