matlab sortrows 返回原序号

在Matlab中，可以使用sortrows函数对矩阵按照指定列进行排序。该函数返回排序后的矩阵，并且可以通过第二个输出参数获取排序前的原序号。例如，对于一个矩阵A，可以使用\[b, ind\] = sortrows(A, 2)来按照第二列对矩阵进行排序，并且ind将会返回排序前的原序号。这样，b将是排序后的矩阵，ind将是排序前的原序号。
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matlab sortrows

The sortrows function in MATLAB is used to sort a matrix or table based on one or more columns. The syntax for the function is:

B = sortrows(A, cols)

where A is the matrix or table to be sorted, cols is a vector of column indices specifying the order of sorting. For example, if cols = [3 1], the matrix will be sorted first by the values in column 3, and then by the values in column 1.

The output B is a sorted version of A. If A is a matrix, B is also a matrix. If A is a table, B is a table with the same variable names and properties as A.

Here's an example of using sortrows to sort a matrix:

A = [5 4 3; 2 1 6; 7 8 9];
B = sortrows(A, [2 1]);

In this case, the matrix A is sorted first by column 2, and then by column 1. The result B is:

B = 
   2   1   6
   5   4   3
   7   8   9

matlab sortrows函数

matlab中的sortrows函数是一种用于按照指定列排序矩阵的函数。该函数可以按照升序或降序的方式对矩阵的指定列进行排序，并返回一个已排序的矩阵。sortrows函数的语法为：

B = sortrows(A, column)

其中A为要排序的矩阵，column为要排序的列，B为已排序的矩阵。可以通过设置column参数为一个向量来按照多列进行排序。sortrows函数还可以用于对结构体数组进行排序。