如何绘制一定区间内宽度相同、高度不同的bin的直方图？

Question

我有一个间隔 0.0..1.0 和里面 10 个 bin 的高度，例如：

[0.1, 0.2, 0.3, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]

如何使用 Matplotlib 渲染具有相同宽度的这些 bin 的直方图？

Answer 1

在hist

的文档字符串中有清楚的解释

Docstring:
Plot a histogram.

Compute and draw the histogram of *x*.  The return value is a tuple
(*n*, *bins*, *patches*) or ([*n0*, *n1*, ...], *bins*, [*patches0*,
*patches1*, ...]) if the input contains multiple data.  See the
documentation of the *weights* parameter to draw a histogram of
already-binned data.

In [24]: import numpy as np
    ...: import matplotlib.pyplot as plt
    ...: 
    ...: w = [0.1, 0.2, 0.3, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
    ...: n = len(w)
    ...: 
    ...: left, right = 0.0, 1.0
    ...: plt.hist(np.arange(left+d/2, right, d),
    ...:          np.arange(left, right+d/2, d),
    ...:          weights=w, rwidth=0.7)
    ...: plt.show()

Answer 2

除了 hist 函数，您还可以使用 bar 函数。

import matplotlib.pyplot as plt

xs = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0]
heights = [0.1, 0.2, 0.3, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1]
bar_width = 0.08

plt.bar(xs, heights, bar_width)

如何绘制一定区间内宽度相同、高度不同的bin的直方图？

How to draw a histogram of bins of the same width and different height in a certain interval?

python

math

matplotlib

histogram

bins