Looking for Matlab sortrows function in C++

[landlord2017]

Hi friends,

I am translating codes from Matlab into C++. I am using "Eigen" library to make my life easier, which is a library that provides many Matlab-like functions in C++. But I couldn't find a function in "Eigen" can do "sortrows" operation as Matlab can. I am wondering if there is a way to match my need.

Thanks,

landlord1984

[Moschops]

If you tell us what the matlab function "sortrows" does, we can tell you how to do the same in C++.

[landlord2017]

Here is the description:

"B = sortrows(A,column) sorts matrix A based on the columns specified in the vector, column. This input is used to perform multiple column sorts in succession. For equal values, the original order is preserved."