Create a row vector comparing strings in a for loop
index = []; s1 = { 'FMO1','FMO2','FMO3','FMO4', 'BAO1', 'BAO2', 'BAO3', 'BAO4'}; s2 = {'mean','FMO1','BAO4','FMO2'}; for k =...

1 year ago | 0

| accepted

Plot u=f(x,y,z) with all discrete data
x = rand(1,100); y = rand(1,100); z = rand(1,100); u = rand(1,100); scatter3(x,y,z,20,u,'filled') colorbar

1 year ago | 0

How can i delete max values for each 5 rows in vector
The following code will apply to any lenght of A and any length N of window from which to delete the maximum, provided that leng...

1 year ago | 0

Why the out varies largely in fixed versus variable time step?
That is because the fixed time step is not able to resolve the very steep change in the variable value that is clearly shown in ...

1 year ago | 0

| accepted

Find elements having a specific row and column numbers in a matrix
If the answer is the diagonal, then I'd use the diag function. However, if you are still interested in generalizing the code, y...

1 year ago | 0

How can we plot different signals S1 S2 and S3 on same y-axis with different values? I have attached a figure for reference.
Assume you have three signals which may overlap when plotted like so x = linspace(154,157,100); s1 = rand(1,100); s2 = rand(...

1 year ago | 0

| accepted

A table of s versus t.
There are a couple of errors in your code. First, the way you define the array t. Second, for array operations, use the dot no...

1 year ago | 0

A compact way to (i) sum two rows and two columns and then (ii) remove one of the two summed rows and one of the two summed columns
Your way is already quite compact. Maybe what you want to avoid is having to concatenate. Then, you could try this. x1 = [1 0 ...

1 year ago | 0

| accepted

How to form a matrix based on the order of input
Input= [110 101 011 111 100 001 010]; M = Input == sort(Input)'

1 year ago | 1

| accepted

function handle as array
That's because mtimes(a,b) = a*b, and if a is 4x4 and b is 4x1 than the operation yields a 4x1 array. I think what you might wa...

1 year ago | 0

Identify the duration of zero values and count the number of such zero regions
Use regionprops time = 0:100; signal = rand(size(time)); signal([3:6,15:21,43:55,61:64,87:92]) = 0; plot(time,signal) r = r...

1 year ago | 0

| accepted

How to count number of ones and zeros in a binary number?
I will assume that your binary numbers are stored as a character array, which is how Matlab normally works, e.g. A = dec2bin(20...

1 year ago | 1

| accepted

Solving a differential equation
Since you have data for V and C you could fit them with the analytical solution of the differential equation. Let's assume this...

1 year ago | 0

solving a dynamic equation
Hi @sam - you did not provide enough info for us to try and give a complete answer, but I did some guessing and came up with a s...

1 year ago | 0

Forward Euler solution plotting for dy/dt=y^2-y^3
There are a couple of issues with your code 1) Indexes in MatLab start at 1, not 0, so y(0) is not valid syntax and must be rep...

1 year ago | 0

| accepted

Dot indexing is not supported for variables of this type.
You are assuming that sh_16_data is a structure. Instead, do sh_16_freq = sh_16_data(:,2)

1 year ago | 0

find columns adjacent to logical values
Reductive example. Assume this is your matrix A = rand(10,5) and let's assume your logical criteria is that you want to extra...

1 year ago | 0

| accepted

Loop plotting for individual years
There's no legend in the example below, because I am not sure what you wanted to do with the cellfun function. Nevertheless, it...

1 year ago | 0

| accepted

How to vertically concatenate many tables produced from a for loop
I would try something like this M = []; for k=1:numel(A) % automatically brings in the correct amount of tables M = [M;re...

1 year ago | 0

| accepted

Duplicating an entire vector
A=[1 2 3 4]; repmat(A,1,3)

1 year ago | 1

plotting graph with 2 different size of vector
Applying diff to a Nx1 array produces an (N-1)x1 array, hence your problem. In truth, you are not really calculating the deriva...

1 year ago | 0

| accepted

Build a matrix with a gradual value of intensity and an horizontal line with a constant value
A = repmat(linspace(0,1,1000),500,1); A(220:280,:) = 0.5; imshow(A)

1 year ago | 0

| accepted

removing specified data from variable
I think the following code is a simpler way of achieving your task, but it does not implement the "pulling a number from a rando...

1 year ago | 0

Call different functions inside a function
The way you have explained it in your question is already correct. See the example below. %% Main script mainfunction %% Mai...

1 year ago | 1

Create an airfoil in MATLAB
From the wikipedia page https://en.wikipedia.org/wiki/NACA_airfoil t = 0.25; % maximum thickness as a fraction of the ch...

1 year ago | 0

Saving Multiple .dat files
This should work A = rand(2000,1000); for col = 1:size(A,2) filename = ['Column_',num2str(col),'.dat']; writematri...

1 year ago | 0

| accepted

1 year ago | 0

| accepted

How do I find slope for large dataset?
Just do A = diff(data)./diff(time);

1 year ago | 0

| accepted