可以用下面的代码详细理解mwArray和一般数组之间的区别
1 mwArray a(3, 2, mxDOUBLE_CLASS); 2 double *aData; 3 aData = new double[6]; 4 int iii; 5 for( iii=0; iii<6; ++iii) 6 { 7 aData[iii] = iii+1; 8 } 9 // print output 10 std::cout << "a = " << std::endl; 11 std::cout << aData[0] << ", " << aData[1] << std::endl; 12 std::cout << aData[2] << ", " << aData[3] << std::endl; 13 std::cout << aData[4] << ", " << aData[5] << std::endl; 14 15 a.SetData(aData, 6); 16 std::cout << "a(1,1)="<<a(1,1)<<std::endl; 17 std::cout << "a(1,2)="<<a(1,2)<<std::endl; 18 std::cout << "a(2,1)="<<a(2,1)<<std::endl; 19 std::cout << "a(2,2)="<<a(2,2)<<std::endl; 20 std::cout << "a(3,1)="<<a(3,1)<<std::endl; 21 std::cout << "a(3,2)="<<a(3,2)<<std::endl;
运行结果如图：【一位数组到多维数组的组织方式是列优先的】
1 a = 2 1, 2 3 3, 4 4 5, 6 5 a(1,1)=1 6 a(1,2)=4 7 a(2,1)=2 8 a(2,2)=5 9 a(3,1)=3 10 a(3,2)=6