How to create a structure inside structure in mex file.

[EDIT: 20110512 23:27 CDT - clarify - WDR]

I have a binary tree from which I want to create a structure.

[Jan]

Please post any datils. It would be very inefficient, if we craete an answer to a question we *guess* at first.

[Himanshu]

i have text file consisting of signal names and data which i am reading and creating a tree.The signal list comprise of signals in dot notation, So i have to read the text file and and create the binary tree from which i want to create the structure. I am able to create structure with using mexArray function but when i try to create a structure for an existing field inside the existing structure i am not able to do.

[Jan]

Show us the code. Then it would be possible to suggest a specific improvement.

Answer 1

[Kaustubha Govind]

I think what you intend to construct is a nested structure. Try something like:

#include "mex.h"
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
 {
  char* level1_fnames[] = {"level1_a", "level1_b"};
  char* level2_fnames[] = {"level2_a1", "level2_a2"};
  mxArray* level2_struct;
  plhs[0] = mxCreateStructMatrix(1, 1, 2, level1_fnames);
  level2_struct = mxCreateStructMatrix(1, 1, 2, level2_fnames);
  mxSetField(plhs[0], 0, "level1_a", level2_struct);
}

[Robert]

This worked for me after I changed two lines to:

const char* level1_fnames[] = {"level1_a", "level1_b"};
const char* level2_fnames[] = {"level2_a1", "level2_a2"};