Matlab中2D矩阵元素的直方图 [英] Histogram on elements of a 2D matrix in Matlab

问题描述

我想知道是否有任何内置函数或一种简便的方法来绘制2d array元素的直方图.

I am wondering if there is any build in function or an easy way to plot a histogram of elements of a 2d array.

例如，如果A=rand(100,1)，则A是1D array，而hist(A)可以进行直方图.

For example, if A=rand(100,1), then A is an 1D array, and hist(A) can do the histogram.

但是，如果是A=rand(100,100)，我想对A的元素进行直方图绘制，就像将A中的每个元素都视为1D array上的元素一样.有一个简单的方法吗?

However, what if A=rand(100,100), and I would like to make a histogram on elements of A, just like treating each element in A as an element on a 1D array. Is there a easy way to do so?

推荐答案

只需要将A整形为矢量，然后就可以照常使用hist了:

You just have to reshape A into a vector, then you can use hist as usual:

hist(A(:))

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