我需要在matplotlib中生成一大堆垂直堆叠的图。结果将使用savefig保存,并在网页上查看,所以我不关心最终图像有多高,只要子图之间有间隔,这样它们就不会重叠。

不管我让这个数字有多大,次要情节似乎总是重叠的。

我的代码目前看起来像

import matplotlib.pyplot as plt
import my_other_module

titles, x_lists, y_lists = my_other_module.get_data()

fig = plt.figure(figsize=(10,60))
for i, y_list in enumerate(y_lists):
    plt.subplot(len(titles), 1, i)
    plt.xlabel("Some X label")
    plt.ylabel("Some Y label")
    plt.title(titles[i])
    plt.plot(x_lists[i],y_list)
fig.savefig('out.png', dpi=100)

当前回答

与tight_layout类似,matplotlib现在(从2.2版开始)提供constrained_layout。与tight_layout(在单个优化布局的代码中可以随时调用)相反,constrained_layout是一个属性,它可以是活动的,并且会在每个绘制步骤之前优化布局。

因此,它需要在子图创建之前或创建期间被激活,例如figure(constrained_layout=True)或subplots(constrained_layout=True)。

例子:

import matplotlib.pyplot as plt

fig, axes = plt.subplots(4,4, constrained_layout=True)

plt.show()

constrained_layout也可以通过rcParams来设置

plt.rcParams['figure.constrained_layout.use'] = True

请参阅what's new条目和受限布局指南

其他回答

import matplotlib.pyplot as plt

fig = plt.figure(figsize=(10,60))
plt.subplots_adjust( ... )

plt。subplots_adjust方法:

def subplots_adjust(*args, **kwargs):
    """
    call signature::

      subplots_adjust(left=None, bottom=None, right=None, top=None,
                      wspace=None, hspace=None)

    Tune the subplot layout via the
    :class:`matplotlib.figure.SubplotParams` mechanism.  The parameter
    meanings (and suggested defaults) are::

      left  = 0.125  # the left side of the subplots of the figure
      right = 0.9    # the right side of the subplots of the figure
      bottom = 0.1   # the bottom of the subplots of the figure
      top = 0.9      # the top of the subplots of the figure
      wspace = 0.2   # the amount of width reserved for blank space between subplots
      hspace = 0.2   # the amount of height reserved for white space between subplots

    The actual defaults are controlled by the rc file
    """
    fig = gcf()
    fig.subplots_adjust(*args, **kwargs)
    draw_if_interactive()

or

fig = plt.figure(figsize=(10,60))
fig.subplots_adjust( ... )

图片的大小很重要。

“我试过改变hspace,但增加它似乎只会让所有的图变得更小,而不能解决重叠问题。”

因此,为了使更多的空白和保持子图大小,总图像需要更大。

你可以用plt。Subplots_adjust用于更改子图之间的间距。

签名:

subplots_adjust(left=None, bottom=None, right=None, top=None, wspace=None, hspace=None)

参数含义(以及建议的默认值)如下:

left  = 0.125  # the left side of the subplots of the figure
right = 0.9    # the right side of the subplots of the figure
bottom = 0.1   # the bottom of the subplots of the figure
top = 0.9      # the top of the subplots of the figure
wspace = 0.2   # the amount of width reserved for blank space between subplots
hspace = 0.2   # the amount of height reserved for white space between subplots

实际的默认值由rc文件控制

您可以尝试.subplot_tool()

plt.subplot_tool()

使用subplots_adjust(hspace=0)或一个非常小的数字(hspace=0.001)将完全删除子图之间的空白,而hspace=None则不会。

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.ticker as tic

fig = plt.figure(figsize=(8, 8))

x = np.arange(100)
y = 3.*np.sin(x*2.*np.pi/100.)

for i in range(1, 6):
    temp = 510 + i
    ax = plt.subplot(temp)
    plt.plot(x, y)
    plt.subplots_adjust(hspace=0)
    temp = tic.MaxNLocator(3)
    ax.yaxis.set_major_locator(temp)
    ax.set_xticklabels(())
    ax.title.set_visible(False)

plt.show()

Hspace =0或Hspace =0.001

hspace = band

请查看matplotlib:紧凑布局指南,并尝试使用matplotlib.pyplot。或者matplotlib.figure.Figure.tight_layout

举个简单的例子:

import matplotlib.pyplot as plt

fig, axes = plt.subplots(nrows=4, ncols=4, figsize=(8, 8))
fig.tight_layout() # Or equivalently,  "plt.tight_layout()"

plt.show()

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