# Repeated Indexing in MATLAB

Indexing is a popular topic I write about from time to time. Today I want to focus on what happens when there are duplicate indices.... read more >>

# Get Smart, Be Logical!

Recently a customer asked me an interesting question about a good way to compute something. Before I sat down to tackle it, I happened to mention the problem to my pal, Sean. And he quickly answered, "max logical". It took me just a moment to realize what he was saying, and it is the answer to the problem. But when I heard it, I heard a person's name "Max Logical", and though I didn't know who that was, I immediately thought of Maxwell Smart, from the 60s tv comedy in the US, called "Get Smart".... read more >>

# Indexing with Curly Braces1

I have talked about indexing a bunch of times in the past, including my last post. Recently I have visited quite a few customers who still get tripped up a bit sometimes. So I thought I'd try again.... read more >>

# Indexing with Parentheses3

I have talked about indexing a bunch of times in the past. Recently I have visited quite a few customers who still get tripped up a bit sometimes. So I thought I'd try again.... read more >>

# Finding the Closest Value Less than a Threshold3

I just got asked a question about a good way to find the closest value in a vector that was less than a threshold. My solution is fairly short, and demonstrates some of my favorite MATLAB techniques. I will compare also show you an "obvious" solution.... read more >>

# Logical Indexing – Multiple Conditions15

I've talked about logical indexing before in some of the linked posts, but recent work makes me want to show it off again. One of the nice things about logical indexing is that it is very easy and natural to combine the results of different conditions to select items based on multiple criteria.... read more >>

# Partitioning a Vector22

Recently on the MATLAB newsgroup, there was a thread asking how to split up a vector into pieces which were each monotonically increasing by the value 1. The post got several answers which I did not read first. Here's my thinking.... read more >>

# Meet the Neighbors9

Some calculations in MATLAB, including, for example, calculating local means or finite differences, or applying some other filter locally, operate on neighboring matrix elements. Doing so in an efficient manner is easy under the right conditions ... read more >>

# Indexing – Mixing It Up13

I've written a bunch of posts related to indexing, but I still haven't showed all the flexibility allowed. Today I'm going to add a variant to the list. ... read more >>

# Rearranging Data16

I can think of a lot of functions that rearrange data in MATLAB. I've long suspected that not all of these are well-known, though some are clearly daily tools. Maybe it's time to be sure they get exposure. ... read more >>