On Fri, Jan 9, 2009 at 10:09 AM, rmber <[email protected]> wrote:
>
> Hi, I'm trying to reformat the ticks on the x axis of a plot I've made. I
> need to divided the values by 1000 and then subtract 10, and I can't figure
> out how. The hierarchy of ticker objects and tick instances is rather
> confusing to me. Can anyone help?
A fairly easy way is to do::
locs = ax.get_xticks()
labels = ['%1.2f'%(loc/1000. - 10.) for loc in locs]
ax.set_xticklabels(labels)
but this won't be updated when you pan and zoom. To do it right, use
a tick formatter::
import matplotlib.ticker as ticker
def format(x, pos=None):
return '%1.2f'%(x/1000. - 10.)
ax.xaxis.set_major_formatter(ticker.FuncFormatter(format))
JDH
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