On Wed, Jul 3, 2013 at 3:13 AM, ChaoYue <chaoyue...@gmail.com> wrote:
> Thanks Ben. I tried but still confused.
>
> In [8]: fig,ax = plt.subplots()
>
> In [9]: ax.plot(range(100))
> Out[9]: [<matplotlib.lines.Line2D at 0x4cadb50>]
>
> In [10]: ax.get_xticks()
> Out[10]: array([ 0., 20., 40., 60., 80., 100.])
>
> In [11]: ax.get_yticks()
> Out[11]: array([ 0., 20., 40., 60., 80., 100.])
>
> In [12]: draw()
>
> In [13]: cs = ax.imshow(np.arange(100).reshape(10,10))
>
> In [14]: draw()
>
> In [15]: cbar = plt.colorbar(cs,ticks=np.arange(0,100,10))
>
> In [16]: cbar.ax.get_yticks()
> Out[16]:
> array([ 0. , 0.1010101 , 0.2020202 , 0.3030303 , 0.4040404 ,
> 0.50505051, 0.60606061, 0.70707071, 0.80808081, 0.90909091])
>
> there are many methods avaialbe for cbar.ax.yaxis object:
> In [19]: cbar.ax.yaxis.get*tick*?
> cbar.ax.yaxis.get_major_ticks
> cbar.ax.yaxis.get_majorticklabels
> cbar.ax.yaxis.get_majorticklines
> cbar.ax.yaxis.get_majorticklocs
> cbar.ax.yaxis.get_minor_ticks
> cbar.ax.yaxis.get_minorticklabels
> cbar.ax.yaxis.get_minorticklines
> cbar.ax.yaxis.get_minorticklocs
> cbar.ax.yaxis.get_ticklabel_extents
> cbar.ax.yaxis.get_ticklabels
> cbar.ax.yaxis.get_ticklines
> cbar.ax.yaxis.get_ticklocs
> cbar.ax.yaxis.get_ticks_position
>
> I tried
> In [20]: cbar.ax.yaxis.get_majorticklocs()
> Out[20]:
> array([ 0. , 0.1010101 , 0.2020202 , 0.3030303 , 0.4040404 ,
> 0.50505051, 0.60606061, 0.70707071, 0.80808081, 0.90909091])
>
> But it doesn't give the tick locs as the normal axes?
>
> could you explain a bit further?
>
> thanks et cheers,
>
> Chao
>
>
Remember, there is a difference between a tick location, and a tick label.
A colormap works from 0 to 1, so that is its data coordinates. We merely
label the ticks with the appropriate values. Try
cbar.ax.yaxis.get_ticklabels().
Cheers!
Ben Root
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