Answered
How to index matrices inside a loop?
Hello, You can change your code a bit like this %% Quantum Control format long clear all clc %% Variables time = -20000...

11 months ago | 1

| accepted

Answered
Convert Column Vector to arrey matrix
Hello, You may see this function, it will help you https://www.mathworks.com/help/matlab/ref/reshape.html

11 months ago | 1

| accepted

Answered
solve not returning two answers
Hello, Maybe you could try with another approach, for example, eq = @(y)2*log((((N-y)./(q*N)).^(N-y)).*((y./((1-q)*N)).^y)) ...

11 months ago | 1

| accepted

Answered
Index in position 1 exceeds array bounds (must not exceed 1).
Hello, There are several approaches that you can try to eleminate the point inside the circle. Here, I can show you a solution...

11 months ago | 0

| accepted

Answered
How can i average a 1-D array every n elements?
Hello, I think this function is exactly what you want https://www.mathworks.com/help/matlab/ref/movmean.html

11 months ago | 0

Answered
Solve out a symbol
Hello, If you write solve(k,s) the solve function will solve another equation k == 0, i.e, w*sqrt(e*m/2)*sqrt(sqrt(1+(s/(...

11 months ago | 1

| accepted

Answered
Not able to get plot
Hello, You used the linespace function with wrong parameter. Here is instruction of linespace function: linspace(X1, X2, N) ...

11 months ago | 1

| accepted

Answered
How can I define the time steps of an x-y plot?
Hello, To get the same figure, you should refine the time step and then you should store value of X and Y with respect to t be...

11 months ago | 1

| accepted

Answered
Counting the Same Occurance of a row string
Here is a possible solution that you can refer clear pj1 = { 'AVX', '0601' 'AVX', '0603' 'AVX', '0603' 'EPC', '0603' '...

11 months ago | 1

Answered
Access multiple folders and extract specific files
Hello, If I understood you well, the code below could help you clear root_folder = 1:12; fig_number = [4 8]; for i = 1:...

11 months ago | 0

Answered
How to extract specific rows from a text file?
Hello, Here is an solution that you can refer, clear FileName = 'HP1_ordered.txt'; NewFile = 'HP1_ordered_skip10.txt'; ...

11 months ago | 1

| accepted

Answered
i wanna improve my function
Hello, As guided by @Geoff Hayes, I could give an example code here. function [res] =contain(v,u) res=true; idx = find(u ==...

11 months ago | 0

Answered
Write to file inside a loop
Hello, You can refer a simple solution as follows saveb1 = []; for (your loop) your code to compute b1; ...

11 months ago | 1

Answered
Calculate volume below a 3D points
Hello, There is a problem with the interpolation function which is not good to give us a smooth fuction. If you plot the "inte...

11 months ago | 0

Answered
Taylor Series of e^x on point 1
Hello, At least, I found a mistake in your program. Let see the line T = symsum((F(o,1)*(x-p)^N)/factorial(N), N, 0, o); Th...

11 months ago | 0

Answered
Minimization of two variables
Hello, Here is an example for your problem, which you can refer clear xiyi = [0,1; 1,3; -1 2]; x0 ...

11 months ago | 0

| accepted

Answered
How can I get plot with smooth lines from this data?
Hello, There is an option that you can refer, a1 = smooth(a); plot(x,a1) There are many types of smooth function, you may ...

11 months ago | 1

Answered
Why the increment of plot not working ?
Hello, You shoul try to put figure('Position',[392,345,441,421]); surf(Data(:,:,i)); shading interp; view(2); % couldn;t a...

11 months ago | 1

| accepted

Answered
evaluate dynamic variables in a loop and assign each one with optimvar.
Hello, This small example may help you clear N = 3; b = cell(1,N); for i = 1:N a = sprintf('b%d',i); b{i} = ...

11 months ago | 0

| accepted

Answered
how to specify length on subplot
Hello, You could set xlim of the first figure. More details, you should see this https://it.mathworks.com/help/matlab/ref/...

11 months ago | 0

| accepted

Answered
Find argmin of function with unique vector
Hello, Here is an example that you can refer I find mininum of function , the initial guess is given by . The code could be ...

11 months ago | 0

Answered
For loop to extract every 3rd column out of matrix and assign as variable name
Hello, Here is an example that you can refer for i = 1:24 v = genvarname(['X' num2str(i)]); eval([v '= A(:,3*i);']); end ...

11 months ago | 0

Answered
Can i debug a for loop ?
Hello, In your code, you save variables "S" and "ab" with the same name for each loop. Therefore, the 'trajektorien.mat' only ...

11 months ago | 0

| accepted

Answered
Condition for matlab if
Hello How about if you remove semi-colon in the line if g(i)+20>size(Wscat,1);

11 months ago | 0

Answered
How can i fix ' Unable to perform assignment because the left and right sides have a different number of elements.' in the loop functions ?
Since "omega3" is a vector, which is not scalar and you calculate alpha3 by using omega3. So, I suggest you change "omge3" in ...

11 months ago | 0

Answered
Write a function ShowPrimes(n) that will find all prime numbers between 1 and n and return them as a vector. Do this using a for loop. Hint: use isprime(x) to check whether x is a prime number. As an example, >> primes=ShowPrimes(20) primes =
Hello, The idea is that you use isprime to check is this prime or not. Then, if it is the prime, you store the value of "i" ...

11 months ago | 0

| accepted

Answered
Find the minimum of a multi-variable function
Hello, In your code, it was not good to put the name like "fun(x,y)". Also, we do not need to declare "fx, fun, fy,.." as sym...

11 months ago | 0

| accepted

Answered
Plotting -3|siny|
it should be like that x=-3*abs(sin(y));

11 months ago | 0

Answered
Rearrange any matrix Randomly with a specific sequence
Here is an example that you can refer a = 1:20; b = randperm(4); n = length(b); for i = 1:n c(5*(i-1)+1:5*i) = a(5*(b(i)-1...

11 months ago | 0

| accepted

Answered
How to get line number in a text file with a specific word
Hello, you could try this fileID = fopen('fruit.txt','r'); A = textscan(fileID,'%s'); fclose(fileID); n = size(A{:}); fo...

12 months ago | 1

Load more