Hi,

I have several thousands sets of 365x670 array data (.mat) which I must load in a loop, and it takes a lot of memory and it very slow - each time I load the data, I only need a very small fraction of it (1x670).

Is there any way to load only a PARTIAL array from a .mat file?  Something along the lines of,

>> load('..\datafile1.mat', array(365,:)) ?

so that I dont have to load the entire thing?

Thanks
Mike

Michael wrote:
> Hi,
> 
> I have several thousands sets of 365x670 array data (.mat) which I must 
> load in a loop, and it takes a lot of memory and it very slow - each 
> time I load the data, I only need a very small fraction of it (1x670).
> 
> Is there any way to load only a PARTIAL array from a .mat file?  
> Something along the lines of,
> 
>>> load('..\datafile1.mat', array(365,:)) ?
> 
> so that I dont have to load the entire thing?
....

No, but you can save the desired row/column and then clear the full 
array before going on.

--

"Michael " <michael.kuss@nrel.gov> wrote in message <ia9kos$3kf$1@fred.mathworks.com>...
>
> Is there any way to load only a PARTIAL array from a .mat file?  Something along the lines of,

You could try this FEX tool (I haven't).

http://www.mathworks.com/matlabcentral/fileexchange/24249-mapping-files-into-working-memory