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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