Re: [Matplotlib-users] xticks when using twinx()

[Moore, E. (NIH/N. [F] <eri...@ni...>]

Mario, 

When you call fig.add_subplot as you are doing, ax1 is None.  I'm not sure why, but you don't need to set the xticks there anyway. Change your call to be ax1 = fig.add_subplot(111) that way ax1 != None.  Then plot, create ax2, plot.  You can then set the xticks by calling ax1.set_xticks([10,40,90]) or equivalently ax2.set_xticks([10,40,90]). 

Eric

> -----Original Message-----
> From: Mario Konschake [mailto:mar...@gm...]
> Sent: Monday, March 19, 2012 1:11 PM
> To: matplotlib-users
> Subject: [Matplotlib-users] xticks when using twinx()
> 
> Hello,
> 
> I to set custom xticks is usually used
> 
> fig = plt.figure()
> ax1 = fig.add_subplot(xticks=[10,40,90])
> plt.plot(range(100))
> 
> I now need to have a second y-axis and tried
> 
> fig = plt.figure()
> 
> ax1 = fig.add_subplot(xticks=[10,40,90])
> plt.plot(range(100))
> 
> ax2 = plt.twinx()
> plt.plot([x*x for x in range(100)])
> 
> which works fine, but i use the ability to manipulate the xticks.
> 
> Any help is highly appriciated.
> 
> Thank you, Mario.
> 
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