What is the conventional type for representing boolean values in Matlab?

Question

I'm reading binary data from a file, the particular value in question is a uchar (unsigned 1-byte value) and conceptually is boolean. How do I write the fread statement?

I.e. what should I put in for ??? in the following:

is_valid=fread(fid, 1, 'uint8=>???','a');

I figure that I could use '*uint8' for the conversion string, but I'd like for the result type to be most-like what other users would expect.

Eitan T · Accepted Answer · 2013-10-02 17:11:20Z

2

Booleans in MATLAB are represented by the logical type. However, fread doesn't support reading logicals, so read them as uint8 and convert to logical later. For instance:

is_valid = logical(fread(fid, 1, 'uint8', 'a'));

edited Oct 2, 2013 at 17:11

answered Oct 2, 2013 at 17:06

Eitan T

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Randi · Accepted Answer · 2013-12-02 22:46:01Z

0

This works on 2012b:

A = fread(fid, 1, 'uint8=>logical');

answered Dec 2, 2013 at 22:46

Randi

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