RESHAPE is a very useful function, but it is something that a lot of MATLAB users do not discover until someone is looking at their code and says “Why are you using a for loop for… read more >>
This was a question that came across my desk recently: “How do I know what figure numbers are already open?” The way to answer this is to query the “root” (always handle… read more >>
clear num = [1 1 1 1 1 1 1]; den = [1 2 3 0 5 6 7]; for i = 1: numel(den) if den(i) == 0 a = 1 else … read more >>
I got a question via e-mail that was asking how to set the data in a uitable. Setting the data in a uitable is as easy as: >> a = uitable >> set(a,’data’,… read more >>
A statement like this: a = sin(x) + cos(y) + inv(z); makes it impossible to know which part of the calculation is the bottleneck. This video shows how to determine what is slowing your code… read more >>
Nathan over at FlowingData.com had a post that explains what visualization to use in different situations. Ultimately he linked to this chart from Andrew Abela of The Extreme Presentation(tm)… read more >>
I have been reading the MATLAB questions in Stack Overflow for a few weeks, and here was a really good question that came through. With two vectors, x and y, bin the x values as if with a… read more >>
I love a good visualization of data, and often cringe when I see data in a table that would be much more effective as a graph. As with many people in Boston today, I am trying to decide what to do… read more >>
MATLAB challenges get thrown around the halls of The MathWorks with fair regularity. I thought this most recent one would make a good puzzler.
You have a matrix that has 3xN rows and you want to… read more >>
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 >>