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"""
=========================
Group barchart with units
=========================
This is the same example as
:doc:`the barchart demo<../lines_bars_and_markers/barchart>` in centimeters.
.. only:: builder_html
This example requires :download:`basic_units.py <basic_units.py>`
"""
import numpy as np
from basic_units import cm, inch
import matplotlib.pyplot as plt
N = 5
menMeans = (150*cm, 160*cm, 146*cm, 172*cm, 155*cm)
menStd = (20*cm, 30*cm, 32*cm, 10*cm, 20*cm)
fig, ax = plt.subplots()
ind = np.arange(N) # the x locations for the groups
width = 0.35 # the width of the bars
p1 = ax.bar(ind, menMeans, width, color='r', bottom=0*cm, yerr=menStd)
womenMeans = (145*cm, 149*cm, 172*cm, 165*cm, 200*cm)
womenStd = (30*cm, 25*cm, 20*cm, 31*cm, 22*cm)
p2 = ax.bar(ind + width, womenMeans, width,
color='y', bottom=0*cm, yerr=womenStd)
ax.set_title('Scores by group and gender')
ax.set_xticks(ind + width / 2)
ax.set_xticklabels(('G1', 'G2', 'G3', 'G4', 'G5'))
ax.legend((p1[0], p2[0]), ('Men', 'Women'))
ax.yaxis.set_units(inch)
ax.autoscale_view()
plt.show()
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