块状图片-将矩阵旋转270度 [英] Numpy image - rotate matrix 270 degrees

问题描述

我有一个代表灰度图像的Numpy 2d数组，我需要将其旋转270度.在这里可能会有点厚，但是我可以找到的两种方法似乎很……循环:

I've got a Numpy 2d array that represents a grey-scale image and I need to rotate it 270 degrees. Might be being a bit thick here but the two ways I can find to do this seem quite... circulous:

rotated = numpy.rot90(numpy.rot90(numpy.rot90(orignumpyarray)))

rotated = numpy.fliplr(numpy.flipud(numpy.rot90(orignumpyarray)))

我认为一次操作必须有更好的方法来做到这一点.基本上是rot270()函数?有任何想法吗?

I'm thinking there must be a better way to do this in one operation. Basically a rot270() function? Any ideas?

推荐答案

您可以告诉rot90到

You can tell rot90 to rotate several times, this should work:

rotated = numpy.rot90(orignumpyarray,3)

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