Matplotlib suptitle 打印在旧标题上 [英] Matplotlib suptitle prints over old title

问题描述

我正在尝试使用 suptitle 打印标题，并且我想偶尔替换此标题.目前我正在使用:

I am trying to use suptitle to print a title, and I want to occationally replace this title. Currently I am using:

self.ui.canvas1.figure.suptitle(title)

其中 figure 是一个 matplotlib 图形(canvas1 是一个 mplCanvas，但这并不相关)，而 title 是一个 python 字符串.

where figure is a matplotlib figure (canvas1 is an mplCanvas, but that is not relevant) and title is a python string.

目前，这是可行的，除了当我稍后再次运行此代码时，它只是在旧文本的顶部打印新文本，从而导致标题难以阅读.

Currently, this works, except for the fact that when I run this code again later, it just prints the new text on top of the old, resulting in a gargeled, unreadable title.

如何替换图形的旧 suptitle，而不是仅仅打印出来?

How do you replace the old suptitle of a figure, instead of just printing over?

谢谢，

泰勒

推荐答案

figure.suptitle 返回 matplotlib.text.Text 实例.您可以保存并设置新标题:

figure.suptitle returns a matplotlib.text.Text instance. You can save it and set the new title:

txt = fig.suptitle('A test title')
txt.set_text('A better title')
plt.draw() 

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