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How to determine the position of an integer
If you want to use the |find| function: pos = find(d==3);

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How to get the desired frequency in simplified synchronous machine?
The electrical frequency is, as stated in the comments: f_elec = poles * f_mec / 2 I was wondering what you were doing, ...

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??? Subscript indices must either be real positive integers or logicals.
Is this what you're trying to do? %% Don't run this part A = magic(4); %% Run this part by itself x = 0.8; f ...

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My input video is in the format of mp4. Does matlab supports this file format?
Should be unnecessary to ask this question in a forum. You can google these things very easily. The answer is yes. <http:/...

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Question

Finding the indices of all edges within k steps from a chosen line in an adjacency matrix
I have a function where I can find all nodes k number of steps from any initial set of nodes in a sparse adjacency matrix. Norma...

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trying to right code to generate matrix for three different frequency
w = [100 200 400]; A = zeros(2,2,3); B = zeros(1,2,3); C = zeros(1,2,3); for i = 1:3 A(:,:,i) = [0 1;...

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Undefined function or variable 'in'.
Well the reason is that you haven't defined 'in' anywhere. My guess is that the input variable should be named 'in'. You hav...

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function performance, same functions has very different speed
I believe this is due to the way matrices are stored in Matlab. A matrix is stored column-wise, as below: A = [1 2 3;4 ...

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How to generate a system of four equations in four unknows to be solved in a matrix?
If you are familiar with solving linear equations on matrix form by hand, you start of the same way: A*x = b, where b = the v...

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Finding all edges (and nodes) within X steps from a chosen line in an adjacency matrix
I have found a good answer to my question above (Thanks to Dr_Sam!). 1: Add 1 on the diagonal of the matrix A. 2: Build a...

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Question

Finding all edges (and nodes) within X steps from a chosen line in an adjacency matrix
I have a nx2 matrix of to-from nodes for a large network structure. I have used this to create a sparse adjacency matrix which I...

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Question

How to graph a connectivity/adjacency matrix?
I want to graph the structure of a network (a power grid). I have a list containing to-from nodes for each branch. The BIOGRA...

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Start matlab on windows 8
If Matlab is installed, and unless your computer is acting up, this should work: 1. Press the windows button, (to enter the s...

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How do I create a vector with the first day of each month?
Not quite sure what you are asking for here. I assume you have a vector with all days from Monday-Sunday, and you know which...

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Question

Calculating parts of the sparse matrix inverse
I have a sparse symmetric matrix H, containing on average 4 non-zero elements per row/col, and a sparse vector M with only two n...

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