Tell me more ×  I'm having trouble using cv::sort functionality
in C++ API of OpenCV.  I'm trying to sort cv::Mat contents in
OpenCV using  cv::sort(InputArray src, OutputArray dst, int
flags);  The following code gives me a compilation error. I'm
not sure whats wrong with this code:  using namespace std; using
namespace cv; int main(int argc, char** argv)     Mat
matrix(5,5,CV_32F,Scalar(0)),m;     randn(matrix, 2.00, 1.00);
cout<<"before sorting:\n"<<matrix<<endl;     sort(matrix, m,
CV_SORT_EVERY_ROW + CV_SORT_ASCENDING);     cout<<"after
sorting:\n"<<m<<endl;     return 0; share|improve this question
What's the error? –  RutgersMike Apr 10 '12 at 0:53 add comment
1 Answer  up vote 5 down vote accepted  You have to use
cv::sort() rather than sort(), even you are using namespace cv.
That is because C++ has an implementation of sort() in namespace
std and simply using sort() will make a conflict.  share|improve
this answer it sometimes feels silly. It again reminded me that
I need to be careful while us