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Here i have some trouble with the method of Mat,which is Mat::push_back() I have two groups of float numbers,and i want to push_back them into a CV_32FC2 Mat. But i don't known how to push_back two float numbers into the CV_32FC2 Mat,and I want to get the data with Mat img.at(i,j)[0] and Mat img.at(i,j)[1],Could anybody help me?

Here i have some trouble with the method of Mat,which is Mat::push_back() I have two groups of float numbers,and i want to push_back them into a CV_32FC2 Mat. But i don't known how to push_back two float numbers into the CV_32FC2 Mat,and I want to get the data with Mat img.at(i,j)[0] and Mat img.at(i,j)[1],Could anybody help me?