可以用下面的代码详细理解mwArray和一般数组之间的区别
mwArray a(3,2,mxDOUBLE_CLASS);
double *aData;
aData = new double[6];
int iii;
for( iii=0; iii<6; ++iii)
{
aData[iii] = iii+1;
}
// print output
std::cout << "a = " << std::endl;
std::cout << aData[0] << ",\t" << aData[1] << std::endl;
std::cout << aData[2] << ",\t" << aData[3] << std::endl;
std::cout << aData[4] << ",\t" << aData[5] << std::endl;
a.SetData(aData,6);
std::cout << "a(1,1)="<<a(1,1)<<std::endl;
std::cout << "a(1,2)="<<a(1,2)<<std::endl;
std::cout << "a(2,1)="<<a(2,1)<<std::endl;
std::cout << "a(2,2)="<<a(2,2)<<std::endl;
std::cout << "a(3,1)="<<a(3,1)<<std::endl;
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】
a = 1,2 3,4 5,6 a(1,1)=1 a(1,2)=4 a(2,1)=2 a(2,2)=5 a(3,1)=3 a(3,2)=6
