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"""
=========================
Group barchart with units
=========================
This is the same example as
:doc:`the barchart</gallery/lines_bars_and_markers/barchart>` in
centimeters.
.. only:: builder_html
This example requires :download:`basic_units.py <basic_units.py>`
"""
from basic_units import cm, inch
import matplotlib.pyplot as plt
import numpy as np
N = 5
tea_means = [15*cm, 10*cm, 8*cm, 12*cm, 5*cm]
tea_std = [2*cm, 1*cm, 1*cm, 4*cm, 2*cm]
fig, ax = plt.subplots()
ax.yaxis.set_units(inch)
ind = np.arange(N) # the x locations for the groups
width = 0.35 # the width of the bars
ax.bar(ind, tea_means, width, bottom=0*cm, yerr=tea_std, label='Tea')
coffee_means = (14*cm, 19*cm, 7*cm, 5*cm, 10*cm)
coffee_std = (3*cm, 5*cm, 2*cm, 1*cm, 2*cm)
ax.bar(ind + width, coffee_means, width, bottom=0*cm, yerr=coffee_std,
label='Coffee')
ax.set_title('Cup height by group and beverage choice')
ax.set_xticks(ind + width / 2, labels=['G1', 'G2', 'G3', 'G4', 'G5'])
ax.legend()
ax.autoscale_view()
plt.show()
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