在PyPlot中反转Y轴 [英] Reverse Y-Axis in PyPlot

问题描述

我有一个散布图，其中包含一堆随机的x，y坐标.当前，Y轴从0开始并上升到最大值.我希望Y轴从最大值开始一直上升到0.

I have a scatter plot graph with a bunch of random x, y coordinates. Currently the Y-Axis starts at 0 and goes up to the max value. I would like the Y-Axis to start at the max value and go up to 0.

points = [(10,5), (5,11), (24,13), (7,8)]    
x_arr = []
y_arr = []
for x,y in points:
    x_arr.append(x)
    y_arr.append(y)
plt.scatter(x_arr,y_arr)

推荐答案

有一个新的API使其更简单.

There is a new API that makes this even simpler.

plt.gca().invert_xaxis()

和/或

plt.gca().invert_yaxis()

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