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POHow to pass an array of double Image to mexFunction in matlab
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copied!<p>I have already passed an image to my mexFunction but now I need to pass an array of images and I am struggling to get the thing right. This is my code to get the simple Image. This works perfectly but when I go into 3D I don't understand how the information is arranged in the mxArray.</p> <pre><code>void mexFunction(int nlhs, mxArray *plhs[], int nrhs, mxArray *prhs[]) { mxArray *matrixIn = prhs[0]; inputImage=(double *)mxGetPr(matrixIn); int x = int(dims[0]); int y = int(dims[1]); volume3D image(inputImage, x, y, 1); } volume3D::volume3D(double* image, int x, int y, int z) { allocateVolume( x, y, z); for(int i=0; i<xSize; i++) for(int j=0; j<ySize; j++) { volume[i][j][0] = double(image[(i)*x+j]); } } </code></pre> <p>I did something like this to pass it the other way around</p> <p>mwSize mrows,ncols; mrows = mxGetM(prhs[0]); ncols = mxGetN(prhs[0]);</p> <pre><code>plhs[0] = mxCreateNumericMatrix(mrows, ncols, mxDOUBLE_CLASS, mxREAL); double *matlabTumorMap = mxGetPr(plhs[0]); const int * dims = mxGetDimensions( plhs[0]); int x = int(dims[0]); int y = int(dims[1]); int z = int(dims[2]); mwIndex subs[3]; mexPrintf("x %i\n",x); mexPrintf("y %i\n",y); mexPrintf("z %i\n",z); mxArray *matrixTumor = plhs[0]; for(subs[0]=0; subs[0]<x; subs[0]++) for(subs[1]=0; subs[1]<y; subs[1]++) for(subs[2]=0; subs[2]<z; subs[2]++) { mwIndex x = mxCalcSingleSubscript( matrixTumor,3,subs); matlabTumorMap[x] = tumorMap.getVoxel(subs[0],subs[1],subs[2]); } </code></pre>

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