Reading a .mat file in c/c++

I am reading a big .mat file in c/c++. That mat file has nested struct and depth. How can i read this file? Thanks in advance.

Answer 1

[James Tursa]

Use the mat API functions from the library (e.g., matOpen, matGetVariable, etc):

http://www.mathworks.com/help/matlab/read-and-write-matlab-mat-files-in-c-c-and-fortran.html

If you need to convert to/from a MATLAB struct and a C/C++ struct then you will need to copy each and every field element one-by-one (e.g., using mxGetField etc.)

[Farik John]

Do you have or know any source code for it? I dont know how to implement it.

[Jan]

@farik John: Did you read the documentation of the different commands? You find links to example code there. You find further codes by asking your favorite internet search engine for "Matlab Mex C Mat"

[Farik John]

I saw the examples in the link you offered before. It's easy to read one depth mat-file. it's dealing with it in the examples. But i am trying to read the 4 depth mat-file. Have you tried to do this before?.

[James Tursa]

What do you specifically mean by "4 depth" mat-file? A mat file simply has variables in it. The variables could be anything. I.e., structs that contain structs that contain structs etc. Is that what you mean by "4 depth", that some of the variables are structs 4 levels deep? If so, then you need to extract that info level-by-level manually in your C/C++ code to work with it (e.g., using mxGetField, followed by another mxGetField, followed by another mxGetField, etc).

[Tharun M]

Can you tell me where to find this api? Unable to find it to download it anywhere