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**Content Feed**

Loop over initial guesses with fsolve

Try with func=@f; x0=[1:0.1:1.9;1:0.1:1.9;1:0.1:1.9;1:0.1:1.9;0.01:0.01:0.1;0.01:0.01:0.1;0.01:0.01:0.1]; x = zeros(10,7); ...

6 days ago | 1

| accepted

Help with numerical integral

I guess this is what you're looking for e=0.1; f=@(x)exp(x)./(1+x); a=0.5; b=1.1; n=2; h=(b-a)/n; i=1:1:n-1; S=f(a...

10 days ago | 0

Legend with certain number of rows and columns

Use legendflex from file exchange. x = linspace(0,1,1000); n = (1:6)'; y = x.^n; p = plot(x,y); title('y = x^n') legendf...

11 days ago | 1

| accepted

Creating a row vector of combinations?

You could use nchoosek. The example below is from -3 to 3 for memory issues (you'll generate a humongous matrix). Just substitut...

12 days ago | 0

| accepted

How to remove the zeros from the array upon breaking out of the for loop?

Would this suit your purpose? RHo = 0.5; % Relative Humidity air [%] M= 0.018; % molar mass of water mol...

13 days ago | 0

How o define two different data set of (t , T) for an ode solver that it's variables are (t , C)?

I think your code is fine, below you can see a slightly different approach that uses interpolation to define the T(t) dependence...

13 days ago | 0

| accepted

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 =...

17 days ago | 0

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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

23 days 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 month 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 ...

2 months ago | 0

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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...

2 months 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(...

2 months 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...

2 months 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 ...

2 months 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)'

2 months 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...

2 months 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...

2 months ago | 0

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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...

2 months ago | 1

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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...

2 months 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...

2 months 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...

3 months ago | 0

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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)

3 months 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...

3 months 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...

3 months 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...

3 months ago | 0

| accepted

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...

3 months ago | 0

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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)

3 months 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...

3 months 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...

3 months ago | 1