How do I read in specific parts of a binary file?

Hi all,

I would like to simply read in a specific, pre-determined length of a binary file in MATLAB. The file is huge, and I cannot/don't want to simply read all of it at once.

I have looked at the 'skip' command within fread but I do not want to skip chunks, I just have one chunk that I want to read in, and be done with it.

How can this be done? (The file is an int16 .bin file).

For example: My file has 1e6 samples, and it int16. I want to ONLY read in the values from sample, say, 433,232, up to, 546,323. How can this be done?

Thanks

[per isakson]

I think it can be done with memmapfile, but I haven't tried.

Answer 1

[Oleg Komarov]

Use fseek and then fread.

Answer 2

[Walter Roberson]

fseek(fid, OFFSET, 'bof')

OFFSET would start at 0 for the first byte of the file.