Stuart’s MATLAB Videos

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Posts 431 - 440 of 549

Video Tutorial: Using visualization to debug 3

A question came up on the MATLAB newsgroup about debugging a sorting algorithm. I thought this was an excellent opportunity to show how visualization of intermediate results would help to determine… read more >>

Video tutorial: 3d indexing 4

The MATLAB user has this: clear clc M(:,:,1) = [1,2;3,4]; M(:,:,2) = [21,22;23,24]; J = [1,2; 2,1]; They want this: ans = [1 22 23 4] They tried this: D = M(:,:,J) % This doesn’t… read more >>

Video tutorial: Verbal code review

Talking through your code is an excellent way to find bugs. By discussing the code you have written line by line, you are forced to understand it better. This is a common practice at most software… read more >>

Video tutorial: Tolerances in comparisons 4

Sometimes you will do a calculation where the answer looks like ‘0’ or ‘1’ or some other number like that. The natural thing to do is to do a test like this: if (answer ==… read more >>

Video tutorial: Infinite series 3

In this short video, I explore the math behind this joke: An infinite number of mathematicians walk into a bar. The 1st orders a 1 beer. The 2nd orders 1/2 a beer. The 3rd orders … read more >>

Video tutorial: Debugging a logical indexing problem 4

I love getting well formed question and challenges from fellow MATLAB users. This week I got one that works very well as a video. The problem was trying to index into a vector with a vector of… read more >>

Contest: Final wrap up 2

Well, it was a great contest this season. I was very happy to see that each King of the Hill tended to get arguably better than the prior. I wanted to find out how much better, so I used the actual… read more >>

Contest: Darkness commentary

I have been waiting until the daylight portion of the ArmyAnts contest to post this commentary. Jan has done an excellent job with his algorithm. He made only one entry in that time period, and he… read more >>

Contest: Army Ants 2

I love the MATLAB contest, I am not sure if it is more fun to play the contest or to help design and administer it. Either way, I am looking forward to seeing a lot of really great algorithms from… read more >>

Video Tutorial: MATLAB basics, LINKPROP

I think it is best to do these tutorials based on solving realistic coding challenges. In helping to write the code for the next MATLAB contest, I had a situation where I wanted two images to be… read more >>

Posts 431 - 440 of 549

These postings are the author's and don't necessarily represent the opinions of MathWorks.