Community Profile

photo

Jan


Last seen: Today
13.286 total contributions since 2009

It is easier to solve a problem than to guess, what the problem is.

Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

Jan's Badges

  • Explorer
  • Personal Best Downloads Level 4
  • Editor's Pick
  • First Review
  • 5-Star Galaxy Level 5
  • First Submission
  • Grand Master
  • Revival Level 4
  • 36 Month Streak
  • Thankful Level 4
  • Knowledgeable Level 4
  • First Answer
  • Promoter
  • Commenter
  • Solver

View details...

Contributions in
View by

Answered
Problem with matrix indexing
The CPU time of the reshape command is very tiny, because it only checks if the number of elements is not changed and then it re...

ongeveer 3 uur ago | 0

Answered
What MATLAB functions are underappreciated?
dbstop . Many newcomers mention, that they do not understand, what their code does. The possibility to step through it line by l...

ongeveer 3 uur ago | 0

Answered
How to creat a pairwise comparison matrix using a for loop ?
A=[2 3; ... 4 7; ... 5 4; ... 2 1]; idx = nchoosek(1:size(A, 1), 2); B = A(idx(:, 1), :) - A(idx(:, ...

ongeveer 4 uur ago | 0

Answered
Save error on linux
Does the folder "/project/XXX/XXX/LTC/ACO/Realistic_ins/" exist? Mounting a folder "/project" directly as root folder is very un...

ongeveer 10 uur ago | 0

Answered
Suppress contourm figure window
The HandleVisibility manages the visibility of the handle for searching with e.g. findall. This does not mean the optical visibi...

ongeveer 11 uur ago | 0

Answered
creating a GUI with edit box and push button
Omit the brute clearing header clc;clear all; close all; It is a waste of time, kills other windows, and has not serious benef...

1 dag ago | 0

Answered
Errors while reading binary data files
The problem is hidden here: fid = fopen(file, 'rt'); This opens the file in "text"-mode on Windows. Then e.g. a CHAR(8) is con...

1 dag ago | 1

| accepted

Answered
How to draw a rectangle over a patch?
You can draw into different AXES objects, while the top one is invisible: FigH = figure; Axes1H = axes(FigH, 'XLim', [0, 100...

1 dag ago | 0

| accepted

Answered
Dot indexing is not supported for variables of this type.
Replace: strfind(sorted_cell_array_of_folder_names(i).name,'.'); % by strfind(sorted_cell_array_of_folder_names{i},'.'); The...

1 dag ago | 0

| accepted

Answered
When is output assigned from function?
Your first version is fine. When the function myfun() exists, the contents of A is replied as first output. The value of B is no...

1 dag ago | 0

Answered
how to make it into for loop
iPeak = 0; % [EDITED] for k = [0, 3, 6, 9] name = sprintf('%d.txt', k); data = load(name, '-ascii'); iPeak = iPeak +...

1 dag ago | 0

| accepted

Answered
Different results for formula in Matlab and Excel
It looks, like you have a typo in the code you have typed in Excel.

1 dag ago | 0

Answered
How to save multiple figures with specific figure name in a certain directory ?
Ah, I see: print([destination,num2str(base),'-dpng','-r2000']); % ^ End of file...

1 dag ago | 0

| accepted

Answered
How to go about programming this function in MatLab
function c = YourSum(x, y, a, b) c = sum(sqrt((a - x).^2 + (b - y).^2)); end

2 dagen ago | 0

Answered
How do I fit a damped sine wave to my data?
x = csvread('PH 1140 - 3R (1,1) - Sheet1.csv'); y = csvread('PH 1140 - 3R (1,2) - Sheet1.csv'); plot(x, y); hold on; This is...

2 dagen ago | 2

| accepted

Answered
Error: Matrix dimensions must agree
Seriously? Your code contains some jokes: -1/.5 == 2 kron(eye(32), [-2, 0; 1, 0]) .* ones(64, 1) == kron(eye(32), [-2, 0; 1, 0...

2 dagen ago | 0

Answered
Finding the index of duplicate rows in a cell
A = [3,8; 8,9; 8,9; 3,9; 3,9; 3,5; 5,10; 5,10; 3,10; 3,17; 3,17; 11,17; 10,11; 10,11; 3,10]; B = {[3,8;8,9;9,3]; [3,5;5,10;3,10...

2 dagen ago | 0

| accepted

Answered
Cernter of gravity.
I assume you mean the center of mass. A matrix is an rectangular set of numbers. So should we assume, that the values of the mat...

2 dagen ago | 0

Answered
Array indices must be positive integers or logical values.
The error message means, that in F(i), the i has its default value, which is the imagninary unit. As Weixin Wang has mentioned ...

2 dagen ago | 1

| accepted

Answered
How to find the row and column for a value within a matrix [c] nearest or equal to 700.
find(inputMat (closest(700))) This is pure guessing. Notice that a command like closest(X) cannot even work in theory, because ...

2 dagen ago | 1

Answered
Not Enough Input Arguments
"when you click the Run button in the future" - This means, that you tried to run the programn pressing the green triangle, the ...

5 dagen ago | 0

Answered
How can I build my own randi function from scratch?
What exactly is "from scratch"? Which tools are included, which one are excluded? E.g. where do you want to take your random bit...

5 dagen ago | 0

Answered
How would I perform logical comparisons with times given in the form of a string vector?
Are you sure that this is working: temptime = IE322data{:,3}; What is the contents of IE322data ? The command works only, if t...

5 dagen ago | 0

Answered
Separate correctly values in array
A = [7.046, 15.66, 24.16, 31.476, 39.42, 62.86, 69.83, 91.326, 98.586,106.672, 114.722]; B = [0.53, 1.25, 2.01, 2.78, 3.51, 4.2...

5 dagen ago | 0

| accepted

Answered
How to get a license?
Ask the admin of your university to contact Matlab's sales team. You find the contact address on the web site.

6 dagen ago | 1

Answered
Print variable in new window
This is a smart tool to create text windows: https://www.mathworks.com/matlabcentral/fileexchange/8641-jprintf

6 dagen ago | 0

Answered
Need help with a While loop: Summation
You need this line: summedValue = summedValue + i; There is no need to call this function recursively, so omit the line Summa...

6 dagen ago | 0

Answered
How to use linspace on a matrix
A = [0.8112, 0.8861, 0.8112, 0.8861; ... 1, 1, 1, 1; ... 1, 1, 1, 1; ... 1, ...

6 dagen ago | 0

| accepted

Answered
saving image file using imread
The message tells you, that you image has unexpected dimensions. JPG and PNG accept 2D matrices and [M x N x 3] RGB arrays. The ...

7 dagen ago | 0

Answered
my graph looks weird
Maybe you want to remove the markers? stem(f,angle(X)*57.3,'linewidth',0.5, 'Marker', 'none'); If you want something else, exp...

7 dagen ago | 0

| accepted

Load more