MATLAB: Print mxArray type.

printing mxarray datatype

Hi,
I want to know how to print mxArray data type. I have a program below
int main(int ac, const char *av[]) {
int param1 = atoi(av[1]); int param2 = atoi(av[2]);
mxArray *in1 = NULL, *in2= NULL;
printf(" input param1 = %d\n", param1); printf(" input param2 = %d\n", param2);
in1 = mxCreateDoubleScalar(param1); in2 = mxCreateDoubleScalar(param2);
}
I want to know how to print in1 & in2
I also want to know how to print mxArray type, if mxArray was string , array , matrix or struct.
If a I have to use any function for this which header file should I include in my .c file
Thansk in advance

Best Answer

Okay, ML Compiler DLL. There is no print function available in C for the mxArray data type. One thing I use quite often in such a case is that I add a specific function to my generated DLL:
function chararray = mlprint(input)
  chararray = evalc('disp(input)');
end
In that way you use the MATLAB display functionality, capture this in a char array and return it back to the C side. Once you have that char array in C, you can apply the normal printf on it.
I created a DLL with the name printtest which contains the function above. On the C side I do:
#include <stdio.h>
#include "printtest.h"
int main()
{
    mxArray *test;
    mxArray *out = NULL;
      double data[] = {1,2,3,4,5,6,7,8,9};
      if( !mclInitializeApplication(NULL,0) )
      {
          fprintf(stderr, "Could not initialize the application.\n");
          return -1;
      }
      test = mxCreateDoubleMatrix(3,3,mxREAL);
      memcpy(mxGetPr(test), data, 9*sizeof(double));
      if (!printtestInitialize()){
          fprintf(stderr,"Could not initialize the library.\n");
          return -2;
      }
      else
      {
          int i = 0;
          mlfMlprint(1, &out, test);
          printf("%s\n",mxArrayToString(out));
          mxDestroyArray(out);
          out = NULL;
          mxDestroyArray(test);
          test = NULL;
          printtestTerminate();
      }
      mclTerminateApplication();
      return 0;
  }
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