Axis in python plots -

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i need plot multiple plots in same figures, this:

enter image description here

the code this:

from __future__ import division matplotlib import pyplot plt import numpy np  fig, ax = plt.subplots(nrows=3, ncols=4, sharex=true, sharey=true, figsize=(16, 12)) fig.text(0.5, 0.04, '$\mathrm{v_{gas}^{hi}}$ [km/s]', ha='center') fig.text(0.04, 0.5, '$\mathrm{w_{50}^{median}}$', va='center', rotation='vertical')  in range (1,13):     ax = plt.subplot(3,4,i)     n, bins, patches = plt.hist(data, 50, color='red',histtype='step', weights=weight)     plt.plot((a,b), (maxim, maxim),"b-")     plt.plot((a-c/2,a), (maxim, maxim),"b--")     plt.plot((b,b+c/2), (maxim, maxim),"b--")

so plot histogram , lines on it. question why first plot doesn't have label on x-axis?


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