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OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)size.p[0] && (unsigned)(i1DataType<_Tp>::channels) < (unsigned)(size.p[1]channels()) && ((((sizeof(size_t)<<28)|0x8442211) >> ((DataType<_Tp>::depth) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file D:\Ram\Software\OpenCV2.4.13\opencv\build\include\opencv2/core/mat.hpp, line 538

I used OpenCV2.4.13 and I got OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)size.p[0] && (unsigned)(i1DataType<_Tp>::channels) (unsigned)(i1DataType<_Tp>::channels) < (unsigned)(size.p[1]channels()) (unsigned)(size.p[1]channels()) && ((((sizeof(size_t)<<28)|0x8442211) >> ((DataType<_Tp>::depth) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file D:\Ram\Software\OpenCV2.4.13\opencv\build\include\opencv2/core/mat.hpp, line 538538

while trying to compile the below piece of code.

myfile << shape.part(i); //std::string num = std::to_string(shape.part(i)); for (int i = 0; i < 68; i++) { myfile << shape.part(i); /fwrite(num, 40, 1, fp);/

            }

How can I solve it.

I used OpenCV2.4.13 and I got OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)size.p[0] && (unsigned)(i1DataType<_Tp>::channels) < (unsigned)(size.p[1]channels()) && ((((sizeof(size_t)<<28)|0x8442211) >> ((DataType<_Tp>::depth) & ((1 << 3) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file D:\Ram\Software\OpenCV2.4.13\opencv\build\include\opencv2/core/mat.hpp, line 538

while trying to compile the below piece of code.

 myfile << shape.part(i);
                //std::string num = std::to_string(shape.part(i));
                for (int i = 0; i < 68; i++)
                {
                    myfile << shape.part(i);
                    /fwrite(num, /*fwrite(num, 40, 1, fp);/
 
fp);*/

                }
 
How can I solve it.