numpy:同时用于max()和min()的函数 [英] numpy: function for simultaneous max() and min()

问题描述

numpy.amax()将在数组中找到最大值，然后 numpy.amin( )对最小值进行相同的操作.如果我想同时找到max和min，则必须调用这两个函数，这需要将(非常大的)数组传递两次，这似乎很慢.

numpy.amax() will find the max value in an array, and numpy.amin() does the same for the min value. If I want to find both max and min, I have to call both functions, which requires passing over the (very big) array twice, which seems slow.

numpy API中是否有一个函数可以只通过一次数据就可以找到max和min?

Is there a function in the numpy API that finds both max and min with only a single pass through the data?

推荐答案

numpy API中是否有一个函数可以只通过一次数据就可以找到max和min?

Is there a function in the numpy API that finds both max and min with only a single pass through the data?

不.在撰写本文时，尚无此功能. (是的，如果有 这样的函数，则其性能将比在大型数组上依次调用numpy.amin()和numpy.amax()的性能显着 .)

No. At the time of this writing, there is no such function. (And yes, if there were such a function, its performance would be significantly better than calling numpy.amin() and numpy.amax() successively on a large array.)

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