蟒蛇; Matplotlib：将Bins的边界设置为整数值

Question

I m drawing a histogram with matplot and I m wondering whether it is possible to set set boundaries of each bin to an integer value. Because if I interpret the Output values of my Plotting correctly it looks like that it is using floats. Input:

plt.figure(figsize=(10,8))
(n, bins, patches) = plt.hist(counts.store_id.values, bins=10, rwidth=0.8)

Output for bins:

[   1.    66.2  131.4  196.6  261.8  327.   392.2  457.4  522.6  587.8 653. ]

Anyone has an idea? And is it possible to set the boundaries manually?

Thx!

Answer 1

You can pass explicit bin edges to the plt.hist function. For example,

bins = np.linspace(0, 700, 15)
plt.hist(counts.store_id.values, bins=bins)

In general, the number of bins will be equal to len(bins) - 1 . In this example, bins will be equally spaced starting with the first bin from 0 to 50 and the last bin from 650 to 700.