[python] annotation in a figure

最新推荐文章于 2025-01-20 10:44:16 发布

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本文详细介绍了如何使用annotate()函数创建注释。该函数可在图表上添加文本信息以指向特定的数据点。文中解释了关键参数如s、xy、xytext等的作用，并说明了如何通过arrowprops来设置连接箭头的样式。

1. `annotate`

.annotate()creates an annotation: a piece of text referring to

a data point.
Usage:
figure.annotate(s=annotation, xy=(x1, y1), xycoords='data', xytext=(x2, y2), textcoords='offset points',...)

common used parameters:

s: string, text information as annotation.
xy: (x,y) position to put the annotation
xytext: (x,y), optional, default=None. Position of label s.
xycoords: string, optional, default=”data”. String indicates what type of coordinates xy is.
textcoords: string, optional, default=None. String indicates what type of coordinates text is.
arrowprops: optional. If it is not none, it is a dictionary of line properties for the arrow that connects the annotation to the point. An arrow connecting two point (xy & xytext) can be optionally drawn by specifying the arrowprops argument.

Application can be found in