Matlab
MATLAB is a high-level language and interactive programming environment for numerical computation and visualization developed by MathWorks. Questions should be tagged with either [tag:matlab] or [tag:octave], but not both, unless the question explicitly involves both packages. When using this tag, please mention the MATLAB release you're working with (e.g. R2017a).
56
votes
8
answers
2.2K
views
How to get all files under a specific directory in MATLAB?
I need to get all those files under D:\dic and loop over them to further process individually. Does MATLAB su
63
votes
2
answers
2K
views
arrayfun can be significantly slower than an explicit loop in matlab. Why?
Consider the following simple speed test for arrayfun: T = 4000; N = 500; x = randn(T, N); Func1 = @(a) (3*a^
52
votes
8
answers
1.3K
views
How to search for a string in cell array in MATLAB?
Let's say I have the cell array strs = {'HA' 'KU' 'LA' 'MA' &ap
55
votes
11
answers
848
views
How can I apply a function to every row/column of a matrix in MATLAB?
You can apply a function to every item in a vector by saying, for example, v + 1, or you can use the function
59
votes
5
answers
1.4K
views
Automatically plot different colored lines
I'm trying to plot several kernel density estimations on the same graph, and I want them to all be differ
57
votes
10
answers
1.5K
views
Matlab: Running an m-file from command-line
Suppose that; I have an m-file at location:C:\M1\M2\M3\mfile.m And exe file of the matlab is at this locatio
61
votes
8
answers
1.2K
views
How to elegantly ignore some return values of a MATLAB function
Is it possible to get the 'nth' return value from a function without having to create dummy variable
57
votes
16
answers
1.4K
views
How do I set default values for functions parameters in MATLAB?
Is it possible to have default arguments in MATLAB? For instance, here: function wave(a, b, n, k, T, f, flag,
57
votes
5
answers
607
views
In MATLAB, when is it optimal to use bsxfun?
I've noticed that a lot of good answers to MATLAB questions on Stack Overflow frequently use the functio
56
votes
9
answers
1.9K
views
Using i and j as variables in MATLAB
i and j are very popular variable names (see e.g., this question and this one). For example, in loops: for i=1
59
votes
4
answers
2.6K
views
Is MATLAB OOP slow or am I doing something wrong?
I'm experimenting with MATLAB OOP, as a start I mimicked my C++'s Logger classes and I'm puttin
59
votes
9
answers
996
views
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
Is there a foreach structure in MATLAB? If so, what happens if the underlying data changes (i.e. if objects a
56
votes
6
answers
3.1K
views
How to get the type of a variable in MATLAB
Does MATLAB have a function/operator that indicates the type of a variable (similar to the typeof operator in
51
votes
12
answers
1.9K
views
Why is MATLAB so fast in matrix multiplication?
I am making some benchmarks with CUDA, C++, C#, Java, and using MATLAB for verification and matrix generation.
60
votes
9
answers
832
views
Is it possible to define more than one function per file in MATLAB, and access them from outside that file?
When I was studying for my undergraduate degree in EE, MATLAB required each function to be defined in its own
49
votes
4
answers
1.9K
views
xkcd style graphs in MATLAB
So talented people have figured out how to make xkcd style graphs in Mathematica, in LaTeX, in Python and in
68
votes
9
answers
460
views
How can I index a MATLAB array returned by a function without first assigning it to a local variable?
For example, if I want to read the middle value from magic(5), I can do so like this: M = magic(5); value = M
