Answered
How to create a loop to run my ODE for two sets of data and then store each data set in two cell arrays.
I do not see the problem: Y0 = [3 1 0 0 0] Y1 = [4 2 0 0 0] tspan = 0:0.1:5; [tout{1}, yout{1}] = ode45(@rates, tspan, Y0)...

nästan 2 år ago | 0

| accepted

Answered
How do you include a mass matrix in ode45?
Simply by a matrix division inside the function to be integrated: dydt = M(t,y) \ f(t,y)

nästan 2 år ago | 1

Answered
Find elemet which are satisfy given condition
Your code is working: x = [1, 401, 400, 500, 10, 300]; x1 = zeros(numel(x), 1); for i = 1:numel(x) if x(i) <= 400 ...

nästan 2 år ago | 0

| accepted

Answered
Opening different folder in matlab using loop
The %g instead of %d format does what you want: vel = [1 1.5 2]; D1 = "D:\RESULTS\PRISTINE FRESH\OUTPUT_"; for check = 1:3 ...

nästan 2 år ago | 0

| accepted

Answered
Is it possible to prevent matlab from saving an m-file on "run"?
Of course changes can be taken back by Ctrl-Z easily, such that accidental input are no serious problem. Even the attack of the...

nästan 2 år ago | 0

Answered
Conversion of float to int16
The signals are not related by a linear transformation: The signals look similar, but the int16 version has a downwards trend...

nästan 2 år ago | 0

Answered
Convert them to grayscale. Write a function, convolve, which takes a filter, F, and an image, I, as input and calculates the 2D convolutions of I with F via the use of ‘for’
outImg(i,j) = result; end end end % <== This END closes the function % Load the input image img = imread('Old ...

nästan 2 år ago | 0

Answered
when i run this code it give me error Not enough input arguments. Error in GWO (line 23) Alpha_pos=zeros(1,dim);
The function requires.these input arguments: SearchAgents_no,Max_iter,lb,ub,dim,fobj. How do you define them? If you start the ...

nästan 2 år ago | 0

Answered
What are some recommended strategies for replicating image processing techniques used in FIJI for a 3d tiff stack, such as non-local means filter, in MATLAB?
See e.g.: https://www.mathworks.com/help/images/ref/imnlmfilt.html https://www.mathworks.com/matlabcentral/fileexchange/13176...

nästan 2 år ago | 0

| accepted

Answered
For loop vectorisation having structure arrays
What is the prupose of a vectorization here? Remember that vectorized code creates temporary arrays usually and this is expensiv...

nästan 2 år ago | 1

| accepted

Answered
Cannot locate any files
Yes, Matlab Online does not access local files. See e.g. https://www.mathworks.com/matlabcentral/answers/1573628-matlab-online-s...

nästan 2 år ago | 1

Answered
What part of this for loop does not want to work with anything else than positive integers?
rE is a vector: rE = zeros(1,n); You cann address its elements with positive integers as indices: rE(1), rE(2), ... t contain...

nästan 2 år ago | 1

Answered
Error using evalin Undefined function or variable 'var'.
The variable var is created in the workspace of the callback function. It is not visible in other workspaces, e.g. in the comman...

nästan 2 år ago | 1

| accepted

Answered
Why could matlab not find the appcontainer folder?
Unrecognized function or variable 'rmfield'. It seems like the complete Matlab path is destroyed. Please explain, what has happ...

nästan 2 år ago | 0

Answered
Not Enough Input Arguments: Newtons Method/Jacobian Matrix
You define gradfun with 3 inputs: gradfun = @(x,y,z) ... In the code you call it with 1 input: gradfxk = gradfun(xnew); The ...

nästan 2 år ago | 0

Answered
How to automatically update the value in a string in an edit box with a value in another edit box but still allow the user to overwrite this value?
Without GUIDE but a working demonstration: handles.FigH = figure; handles.Edit1 = uicontrol('Style', 'Edit', ... 'Units',...

nästan 2 år ago | 0

| accepted

Answered
Permission error for PREFDIR when running a stand-alone application on a different system
If the preferences folder is hardcoded, such problems occur. Search in the code for the name of the folder an replace it by the ...

nästan 2 år ago | 0

Answered
Ways for faster torque interpolation
interp1 is slower than griddedInterpolant. You can created the interpolant outside the integration to save more time. A sever p...

nästan 2 år ago | 0

Answered
How to load a mat. file containing one big matrix
If the variable in the MAT file has more than 2GB, it must have the v7.3 format. You try to extract a 994x961x3346 subarray, wh...

nästan 2 år ago | 0

Answered
Combining masks in 4D matrix
With FEX: RunLength : s = size(mask); mask = reshape(mask, [], s(4)); for k = 1:size(mask, 1) % [EDI...

nästan 2 år ago | 0

| accepted

Answered
Does dsolve benefit from multiple cores?
Open the TaskManager and look at the CPU usage. Does dsolve use one or all cores? This is a strong hint to decide, if it is mult...

nästan 2 år ago | 1

Answered
Plot line doesn't follow function
You determine the corret values, but draw them in random order. Sorting cleans the diagonalish lines: x_total = zeros(1, 1000...

nästan 2 år ago | 0

| accepted

Answered
How do I create a random number generator using congruent method
A very cheap linear congruential RNG with parameters suggested by Knuth: function a = rng_cheap % On-line Numerical Recipes in...

nästan 2 år ago | 0

| accepted

Answered
Problems running the code in Mac
This will not run on a PC also. If M_.param_names is a 54x8 char, you cannot use braces for indexing, because they work for cell...

nästan 2 år ago | 0

| accepted

Answered
Error in saving data
As the message tells you: Use a MAT file version 7.3 . You can find instructions by doc save. save('File.mat', 'YourVariable', ...

nästan 2 år ago | 1

Answered
How to index variables in two combined function for overwriting data
With some bold guessing: X0 = 1.5; Y0 = 1.5; Z0 = 3.0; Theta0 = 30; Phi0 = 90; K = 4; X = [X0 zeros(1,K)]; Y = [Y0 zeros...

nästan 2 år ago | 0

| accepted

Answered
repeat the code with different value each time
w = rand(6, 222); index = 1:6:size(w, 2); result = zeros(1, numel(index)); for k = 1:numel(index) aw = w(:, index(k):ind...

nästan 2 år ago | 0

| accepted

Answered
my error in the write n!+1 = 0 mod n
nq=factorial(n(i)))+1; % ^ Here are more closing then opening parentheses. Whenever you mention an error in t...

nästan 2 år ago | 1

Answered
The code works but it gives this warning. How to remove this warning?
You call the function L2_Array in ByAskic.m with the arguments 6 and 10. Inside L2_Array you calculate N_on_each_axis = (N-1)/...

nästan 2 år ago | 1

Answered
How can I separate data into multiple groups?
data = [2416.015, 127.402, 382.165, 127.425, 127.3387, 127.406, 637.001, 127.405, 2240.913, ... 2257.54, 241.801, 3064....

nästan 2 år ago | 0