The question is still about memmapfile for matlab file:

The code is as follows:
mydata = [(1:100)’ (1:100)’];
save test.mat mydata -v6

m = memmapfile(’test.mat’,'format’,{’double’,[100 2],’mydata’});
m.Data
??? Error using ==> memmapfile.memmapfile>memmapfile.hCreateMap at 257

I am wondering how to memory-map a .mat file. I guess there is some header information in the .mat file so that the data cannot be properly accessed.

I have a question for using memmapfile.

We can create an memmapfile object using m = memmapfile(which(’clown.mat’));

Can we just load a subset (say the first 100 row and cols) of the matrix simply using;
subset = m.data(1:100,1:100);?

I tried that but it doesn’t work. Can you suggest how to access the memory mapped matlab file? Thanks.

Chee

Can you