MEX: pointers to a matlab structure

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Petr
Petr 2013-8-28
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

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回答（1 个）

Kaustubha Govind
Kaustubha Govind 2013-8-28
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.

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