MEX: pointers to a matlab structure

Hello,

I have the following problem. There is a Matlab structure as follows:

d(1).x=uint32([1 4 6 7 ]);

d(1).y=single([3.3 2.5 3.5 4.4]);

d(2).x=uint32([6 1 7 ]);

d(2).y=single([2.5 3.8 4.4]);

....

d(n).x=uint32(...

d(n).y=single(...

The structure "d" is huge (40GB). I need to do some fast calculation with it. How can I get pointers e.g. d(2).x(3) and d(2).y(3) in MEX?

PETR

Answer 1

[Kaustubha Govind]

You need to use mxGetField to access structure fields and mxGetData to access data in a numeric array. If you'd like to see an example, I'd recommend $matlab/extern/examples/refbook/phonebook.c (where $matlab is the location of your MATLAB installation). There are other examples for the MEX API in the same directory.