matplotlib.pyplot.errorbar抛出错误，它不应该吗? [英] matplotlib.pyplot.errorbar is throwing an error it shouldn't?

问题描述

我正在尝试使用我的数据绘制一个误差线图. X是9个元素的ndarray. Y和Yerr是9x5 ndarray.当我打电话时:

I'm trying to make an errorbar plot with my data. X is a 9 element ndarray. Y and Yerr are 9x5 ndarrays. When I call:

matplotlib.pyplot.errorbar(X, Y, Yerr)

我收到ValueError:"yerr必须是标量，与y相同，或2xN."

I get a ValueError: "yerr must be a scalar, the same dimensions as y, or 2xN."

但是Y.shape == Yerr.shape是True.

我在带有Spyder 2.3.8和Python 3.5.1的64位Windows 7上运行. Matplotlib是最新的.我已经安装了Visual Studio 2015的Visual C ++ Redistributable.

I'm running on 64 bit Windows 7 with Spyder 2.3.8 and Python 3.5.1. Matplotlib is up to date. I've installed Visual C++ Redistributable for Visual Studio 2015.

有什么想法吗?

一些数据.

X=numpy.array([1,2,3])
Y=numpy.array([[1,5,2],[3,6,4],[9,3,7]])
Yerr=numpy.ones_like(Y)

推荐答案

也许文档的"y维度"实际上是1xN ...

Maybe by "dimension of y" the docs actually meant 1xN...

无论如何，这可能有效:

Anyway, this could work:

for y, yerr in zip(Y, Yerr):
    matplotlib.pyplot.errorbar(X, y, yerr)

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