Re: [Matplotlib-users] tick_left() and tick_right() with minor tick marks

[Darren D. <dsd...@gm...>]

On Monday 23 June 2008 08:53:56 pm Adam Mercer wrote:
> Hi
>
> Anyone know how to fix this problem?
>
> Cheers
>
> Adam
>
> On Thu, Jun 19, 2008 at 8:31 PM, Adam Mercer <ram...@gm...> wrote:
> > Hi
> >
> > I have a plot that has two different y-axis scales and I want
> > appropriate tick marks for the different y-axes. ie I want the tick
> > marks on the left axis to correspond to the scale on the left axis
> > etc... As far as I can tell the way to accomplish this, after
> > consulting the documentation, is to use the tick_left() and
> > tick_right() methods, I therefore have the following code:
> >
> > axes1.yaxis.tick_left()
> > axes1.yaxis.set_major_locator(pylab.MultipleLocator(0.1))
> > axes1.yaxis.set_minor_locator(pylab.MultipleLocator(0.05))
> > axes2.yaxis.tick_right()
> > axes2.yaxis.set_major_locator(pylab.MultipleLocator(5))
> > axes2.yaxis.set_minor_locator(pylab.MultipleLocator(1))
> >
> > but the minor ticks are on both the left and right y-axes. How can I
> > make the minor ticks for axes1 only appear on the the left and the
> > minor ticks for axes2 appear on the right?

I don't see a problem here. I did the following:

ipython -pylab
run two_scales.py
ax1.yaxis.set_minor_locator(MultipleLocator(1000))
draw()
# Shows minor ticks on both left and right yaxis
 ax1.yaxis.tick_left()
draw()
# shows minor ticks on left only
ax2.yaxis.set_minor_locator(MultipleLocator(.1))
draw()
# shows left yaxis minor ticks on left only, shows right yaxis ticks on both
ax2.yaxis.tick_right()
draw()
# shows left yaxis minor ticks on left only, right yaxis minor ticks on 
# right only

Darren