plt.annotate('mean={:.2f}\nstd={:.2f}'.format(mean1, std1), xy=(x[50], y1[50]), xytext=(x[30], 0.5),)
时间: 2024-05-25 12:19:24 浏览: 18
This line of code adds an annotation to a Matplotlib plot.
The text of the annotation is formatted using the `format()` method to include the mean and standard deviation of a variable. These values are passed as arguments to the `format()` method and are formatted to two decimal places using the `:.2f` format specifier.
The `xy` parameter specifies the location of the point on the plot where the annotation will be anchored. In this case, it is at the 50th element of the `x` and `y1` arrays.
The `xytext` parameter specifies the location of the text of the annotation. In this case, it is at the 30th element of the `x` array and a y-value of 0.5. This positions the text above and to the left of the anchored point.
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