[英]Change tick size on colorbar of seaborn heatmap
I want to increase the tick label size corresponding to the colorbar in a heatmap plot created using the seaborn
module. 我想增加使用seaborn
模块创建的热图图中与seaborn
对应的刻度标签大小。 As an example: 举个例子:
import seaborn as sns
import pandas as pd
import numpy as np
arr = np.random.random((3,3))
df = pd.DataFrame(arr)
ax = sns.heatmap(arr)
Usually I would change the labelsize
keyword using the tick_params
method on a colorbar axes object, but with the heatmap()
function I can only pass kwargs to the colorbar constructor. 通常我会在colorbar轴对象上使用tick_params
方法更改labelsize
关键字,但是使用tick_params
heatmap()
函数我只能将kwargs传递给colorbar构造函数。 How can I modify the tick label size for the colorbar in this plot? 如何在此图中修改颜色条的刻度标签大小?
Once you call heatmap
the colorbar axes will get a reference at the axes
attribute of the figure object. 调用heatmap
,色条轴将获得图形对象的axes
属性的引用。 So you could either set up the figure ahead of time or get a reference to it after plotting with plt.gcf
and then pull the colorbar axes object out that way: 因此,您可以提前设置图形,或者在使用plt.gcf
绘图后获得对它的引用,然后以这种方式拉出plt.gcf
轴对象:
import seaborn as sns
import pandas as pd
import numpy as np
arr = np.random.random((3,3))
df = pd.DataFrame(arr)
ax = sns.heatmap(arr)
cax = plt.gcf().axes[-1]
cax.tick_params(labelsize=20)
A slightly different way that avoids gcf()
: 避免gcf()
方式略有不同:
import seaborn as sns
import pandas as pd
import numpy as np
arr = np.random.random((3,3))
df = pd.DataFrame(arr)
fig, ax = plt.subplots()
sns.heatmap(arr, ax=ax)
ax.tick_params(labelsize=20)
I almost always start my plots this way, by explicitly creating a fig
and ax
object. 我几乎总是以这种方式开始我的情节,通过明确地创建一个fig
和ax
对象。 It's a bit more verbose, but since I tend to forget my matplotlib-foo
, I don't get confused with what I'm doing. 它有点冗长,但由于我倾向于忘记我的matplotlib-foo
,所以我不会对我正在做的事情感到困惑。
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