My Test about Mat

>Mat a = cv::Mat(2,2,CV_32S,1);

output:  [1,1;

　　　　　1,1]

>Mat a = cv::Mat(2,2,CV_32SC3,1);

output:  [1,0,0,1,0,0;

　　　　　1,0,0,1,0,0]

>Mat a = cv::Mat(2,2,CV_32S,Scalar(0));

output: [0,0;

　　　　  0,0]

>Mat a = cv::Mat(2,2,CV_32S,0);

output: [;

]

>Mat a = Mat(2,2,CV_32SC3,Scalar(0));

output: [0,0,0,0,0,0;

0,0,0,0,0,0]

>Mat a = Mat(2,2,CV_32SC3,Scalar(0,1,2));

output: [0,1,2,0,1,2;

0,1,2,0,1,2]

>Mat a = Mat(2,2,CV_32SC3,Scalar(0,1));

output: [0,1,0,0,1,0;

0,1,0,0,1,0]