Re: [Matplotlib-users] Formatting the ticks in a plot

[Brad M. <bra...@gm...>]

Paul,

That fixes my problem perfectly. Thanks for the solution!

Best,
Brad

On Thu, Mar 29, 2012 at 1:59 PM, Paul Hobson <pmh...@gm...> wrote:

> Brad,
>
> Matplotlib axes objects have set_xticklabels methods. It's brute
> force, but this will work:
> ax = gca()
> ax.set_xticks([0., 0.015, 0.03])
> ax.set_xticklabels(['0', '0.015', '0.03'])
>
> Hope that helps,
> -paul
>
>
> On Thu, Mar 29, 2012 at 1:13 PM, Brad Malone <bra...@gm...>
> wrote:
> > Hello,
> >
> > I am working on a plot in which I need to modify the value of the
> xticks. A
> > snippet of my code is attached below:
> >
> >>               fig=figure()
> >>
> >>     gs=matplotlib.gridspec.GridSpec(1,2,width_ratios=[3,1])
> >>     gs.update(wspace=0.1)
> >>     ax=subplot(gs[0])
> >>     ylabel('Frequency (cm'+r'$^{-1}$'+')')
> >>     for i in range(0,len(ydata)):
> >>         plot(xdata[i],ydata[i],'r-',linewidth=1.5)
> >>     plot(xdata[0],[0.0]*len(xdata[0]),'k:')
> >>
> >>
> pos=[0,49.9856985699,99.9713971397,170.661849982,212.979781775,283.67023461\
> >> 7,333.655933187,375.97386498]
> >>
> >>
> locs,labels=xticks(pos,[r'$\Gamma$','X','M',r'$\Gamma$','Z','A','R','X'])
> >>     for i in range(0,len(pos)):
> >>         plt.axvline(x=pos[i],linewidth=0.5,color='k',alpha=0.5)
> >>     axis([0,375.98,0,300])
> >>     ax2=subplot(gs[1])
> >>     plot(dosydata,dosxdata,'r-',linewidth=1.5)
> >>     a=gca()
> >>     b=a.get_xticks()
> >>     print b
> >>     a.xaxis.set_ticks([0.0, 0.015, 0.03])
> >>    a.tick_params(axis='x',labelsize=14)
> >>     a.set_xlim([0,0.03])
> >>     a.set_ylim([0,300])
> >>     ax.label_outer()
> >>     ax2.label_outer()
> >>     show()
> >
> >
> > It's a plot with two subplots. Anyway, the issue I'm running into
> concerns
> > the x-axis on the second subplot. As you can see I have set it explicitly
> > with "a.xaxis.set_ticks([0.0, 0.015, 0.03])". However, when I do this it
> > shows up as (0.000, 0.015,0.030) which I would really like it to look
> like
> > (0,0.015,0.03). In other words, I don't want extra zeros because they are
> > unnecessary and make the text run into my other subplot. So I need to be
> > able to format them somehow. How would I achieve this selective
> formatting
> > (because of course I want 0.015 to show up that way and not 0.01).
> >
> > Thanks so much in advance for the help!
> >
> > Best,
> > Brad
> >
> >
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