Comments on: MATLAB Basics video: Absolute and Logical indexing

By: Doug

Doug — Mon, 03 Mar 2008 19:20:21 +0000

It will be required to pull out the intermediate values to use that logical matrix or you will need to do some other indexing method.

Doug

By: Dennis Olly

Dennis Olly — Sun, 02 Mar 2008 00:12:00 +0000

Hi Doug, very clear video, however, is it possible to do logical indexing directly to a submatrix, eg:

data=zeros(10,10,10);

here data(:,:,5) could be slice.
now let

mask=zeros(10,10);mask(5:5,8:8)=1;

Is it possible to use this mask to logically index the submatrix data(:,:,5)?

slice = data(:,:,5);
and then accessing slice(mask) is possible. But can this not be done directly, without extracting ’slice’?

Thanks
Dennis

By: naor

naor — Thu, 06 Sep 2007 22:51:49 +0000

Doug, in the RSS feed of your blog, read in internet explorer 7, the videos never show. I don’t mean they don’t run, there are just lines of text with a single blank line where the videos should be. Is there a way to fix this?
Thanks,
naor (win32xp r2006a)