Comments on: Evolution of logical arrays in MATLAB http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/ Steve Eddins manages the Image & Geospatial development team at The MathWorks and coauthored Digital Image Processing Using MATLAB. He writes here about image processing concepts, algorithm implementations, and MATLAB. Sat, 11 Feb 2012 18:27:50 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Steve http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22305 Steve Mon, 09 Nov 2009 18:18:06 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22305 Khan—I don't completely understand your question. Please post a bit of code and then describe say how the result didn't match your need or expectation. Khan—I don’t completely understand your question. Please post a bit of code and then describe say how the result didn’t match your need or expectation.

]]> By: Khan http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22250 Khan Thu, 22 Oct 2009 16:49:13 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22250 Hi Steve This is slightly different question, and may be lame one, Like you posted above, I am trying to visualize an image after logical indexing, by converting from (rgb unit8) into logical array, imshow did not show the image,it is because of rgb, but shows if i change that to rgb2gray and doing logical indexing. Thanks Khan Hi Steve
This is slightly different question, and may be lame one,
Like you posted above, I am trying to visualize an image after logical indexing, by converting from (rgb unit8) into logical array, imshow did not show the image,it is because of rgb, but shows if i change that to rgb2gray and doing logical indexing.
Thanks
Khan

]]> By: Andreas http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22163 Andreas Mon, 28 Sep 2009 20:25:10 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22163 I started using Matlab in 1997 with version 5.* during my Master's thesis. Emacs was my "desktop environment". I just went to the old project dir to check: "grep find *m | wc -l" gives 69 Apparently I didn't know about logical indexing :-) I started using Matlab in 1997 with version 5.* during my Master’s thesis. Emacs was my “desktop environment”. I just went to the old project dir to check:
“grep find *m | wc -l” gives 69
Apparently I didn’t know about logical indexing :-)

]]> By: Flemming http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22161 Flemming Fri, 25 Sep 2009 14:28:56 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22161 I started using matlab 5.2. I wanted to use glcm on images. I started using matlab 5.2. I wanted to use glcm on images.

]]> By: Steve http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22159 Steve Thu, 24 Sep 2009 13:45:39 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22159 Images—Are you familiar with MATLAB? Images—Are you familiar with MATLAB?

]]> By: images http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22158 images Thu, 24 Sep 2009 13:38:48 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22158 Very hard code.. I 'm not understand.. Very hard code.. I ‘m not understand..

]]> By: Han Geerligs http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22150 Han Geerligs Wed, 23 Sep 2009 11:01:43 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22150 I started using PC-Matlab 2.0 in 1987, working on the use of the Sylvester Expansion Theorem to calculate eigenvalues analytically for my thesis. -Han I started using PC-Matlab 2.0 in 1987, working on the use of the Sylvester Expansion Theorem to calculate eigenvalues analytically for my thesis.

-Han

]]> By: Steve http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22146 Steve Mon, 21 Sep 2009 20:32:22 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22146 Omid—Yes, it's an 8.3 artifact. MATLAB 3.13 is running on my WinXP computer under the Win16 compatibility system, including automatic 8.3 path/file renaming. Omid—Yes, it’s an 8.3 artifact. MATLAB 3.13 is running on my WinXP computer under the Win16 compatibility system, including automatic 8.3 path/file renaming.

]]> By: Omid http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22145 Omid Mon, 21 Sep 2009 20:18:09 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22145 Steve, You're so lucky to have (access to) them all! BTW in the first screenshot, the path in the title bar has MATLAB~1.1 but you mention it's from 3.13. Do these refer to the same thing? (Has some 8.3 naming rule affected the path?) Steve, You’re so lucky to have (access to) them all! BTW in the first screenshot, the path in the title bar has MATLAB~1.1 but you mention it’s from 3.13. Do these refer to the same thing? (Has some 8.3 naming rule affected the path?)

]]> By: Steve http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22144 Steve Mon, 21 Sep 2009 20:00:12 +0000 http://blogs.mathworks.com/steve/2009/09/18/evolution-of-logical-arrays-in-matlab/#comment-22144 Omid—I found it surprisingly fun to go run all those old MATLAB versions. Omid—I found it surprisingly fun to go run all those old MATLAB versions.

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