mex

I write some mex function and have to return huge array of strings. I do this as following: mxArray * array = mxCreateCellMatrix(ARRAY_LEN, 1); for (size_t k = 0; k < ARRAY_LEN; ++ k) { mxArray *str = mxCreateString("Hello"); mxSetCell(array, k, str); } prhs[0] = array; However, since the string has always same value, I would like to create only one instance of it. like mxArray * array = mxCreateCellMatrix(ARRAY_LEN, 1); mxArray *str = mxCreateString("Hello"); for (size_t k = 0; k < ARRAY_LEN; ++ k) { mxSetCell(array, k, str); } prhs[0] = array; Does it possible? How the garbage collector

Is it possible to get a 2D Mat object from a 3D data cube stored as MatND in opencv? Basically I'm passing a 3D matrix to a MexFile using "mexopencv". I convert the matrix to a MatND object by using MxArray(prhs[0]).toMatND(). Now I want to split up this datacube along the third dimension into a vector of cv::Mat matrices. I need to make operations on these 2D matrices an therefore iterate over the third dimension. Is there a function to split the data cube as needed? Or maybe a way to get a pointer to the 2D sub matrices of the 3D data cube? Edit: This is my code which uses mexopencv to

Does anyone know what the matlab mex library lifecycle is? Specifically I am interested in the following: Is there a way to force the library to be loaded before invoking it? Is the library a singleton or are multiple instances loaded? Are there any hooks for initialization prior to invocation? Is there a destructor hook/signal that can be intercepted when the library is unloaded for cleanup? I did an extensive search here and online and I could not find the answers to these questions. My problem has some performance cost with initialization and I would like to avoid that if possible, without

I am trying to run a code which compiles some c++ codes using mex. I have set up mex with Microsoft Visual C++ 2010. But when I execute the line mex -O fconv.cc -o fconv I get the error compile Usage: MEX [option1 ... optionN] sourcefile1 [... sourcefileN] [objectfile1 ... objectfileN] [libraryfile1 ... libraryfileN] Use the -help option for more information, or consult the MATLAB API Guide. C:\PROGRA~1\MATLAB\R2011A\BIN\MEX.PL: Error: Unrecognized switch: -o. I have googled a lot but couldn't find anything of use. It would be great if you someone could help me out here. I have very limited

I've written a program of the following form: #include "stuff_I_need.h" int main(){ construct_array(); // uses OpenMP pragma's print_array(); return(0); } that compiles, links, and runs correctly with the following command: `gcc44 -I/home/matteson/sundials/include/ main.c -lm -L/home/matteson/sundials/lib -lsundials_cvode -lsundials_nvecserial -fopenmp -o /home/matteson/MPI_test/CVODE_test/main_test` "gcc44" is simply gcc version 4.4 and is named like this because it's being compiled on a cluster that maintains several versions of gcc. The libraries sundials_cvode and sundials_nvecserial are