Rik
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MATLAB Central Community 20 Year Anniversary Treasure Hunt participant badge
Awarded to Rik on 13 Sep 2021
MATLAB Central Treasure Hunt finisher badge
Awarded to Rik on 13 Oct 2020
Contribute at least one answer each month for 36 consecutive months
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Solve all the problems in Draw Letters problem group
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Solve a community group
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Your submissions received 10 five star ratings
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Have 3 submissions connected to GitHub
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Solve all the problems in Indexing I
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Solve all the problems in Cody Challenge
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Solve all the problems in Introduction to MATLAB problem group
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Content Feed
The graph wont be appear
Do what the error message tells you to do: y= t.^2 .* cos(t);
7 hours ago | 1
Change array elements that meet a condition - Multidimensional array case
I can think of two ways: # using a loop # replicating B in the third dimension to match the size of A I suspect the first...
7 hours ago | 0
How I can convert from binary to character?
Your binary data seems to require some modification before it contains what you expect. data=[0 0 0 1 0 0 1 0 1 0 1 0 0 1 1 0 0...
12 hours ago | 0
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Correct Magic Square to text file?
Your file is written row by row, while Matlab will read the data in B column by column. So while most people would not expect t...
16 hours ago | 0
Is Live editor included in the Matlab licence or a separate program?
Live scripts (along with the live editor) were introduced in R2016a. They are a part of base Matlab (so it doesn't require any t...
1 day ago | 0
Finding the indices of the elements of one array in another
You muct have thought of this already (as it is one of your tags), but ismember does what you need: A = ["G1", "V2", "G3", "G4"...
1 day ago | 0
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MATLAB GUI - how to make a button change a value then close window
If you add uiwait before the nested function, this will pause execution of the main function. This will give the user time to cl...
2 days ago | 0
QSS toolbox 2018 version
If you have a relatively recent release of Matlab, you can use the AddOn Manager to get it, but you can download it from the fil...
2 days ago | 0
get uiTable data when using it in a function
For general advice and examples for how to create a GUI, have look at this thread. If you want to stick with this setup you wil...
2 days ago | 0
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Reading text file data with different data formats
I would suggest reading the text file as text, extract the header, and then parse the data with tools like textscan. (You can g...
3 days ago | 1
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How do i resolve this error
You can resolve this error by making sure the dimensions agree. If you think this answer is unhelpful; it is. If you want a mor...
5 days ago | 0
CELL2MAT does not support cell arrays containing cell arrays or objects.
I would suggest using this instead of the entire if statement: ax=[varargin{:}]; This will happily accept empty inputs, ...
6 days ago | 0
Create a function handle sum of other function
Your anonymous function will become more opaque and I expect the performance to suffer, but this will work: fun=@(x) A; ...
8 days ago | 0
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How to select files based on the name?
First you need to retrieve all file names with dir. Then you can split the file name on the dots with the split function. After ...
9 days ago | 0
How do I install Guide to AppDesigner Migration Tool without the internet?
Since in principle you should only need this migration tool once per project, wouldn't it be feasible to migritate on the online...
9 days ago | 0
How do I make 3D sphere for convolution?
If you want a sphere in a 3D array, you should probably do something like this: array_width=21;%must be odd radius=5;%must be ...
9 days ago | 0
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Saving multiple files in 'xlsx' format
Use sprintf to create a filename based on your variables. for one = 1:numel(p) for two= 1:numel(o) T = table(c{1,...
10 days ago | 0
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how to add numbers above the tips of a bar chart
b=[1 2 3]; labels=arrayfun(@num2str,b,'Uni',0); bar(b) text(1:numel(b),b+0.1,labels)
12 days ago | 0
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store strings and numbers into an array
I would suggest create a struct array: data=struct('Name',{'Peter','Fabian','Mary'}); [data.Age]=deal(28,21,32);%just to show ...
14 days ago | 0
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how to give range in xlsread using edit text field in app designer?
Assuming app.Columneditfield.Value is already a char, you can simply create the range like this: Range=[app.Columneditfield...
15 days ago | 1
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for loop index variable change inside the loop[
Once a for loop has started you can no longer change the expression it is based on. You will have to rewrite your for loop as...
15 days ago | 0
How to test montonousness of X Y data
I would sort x, use the second output of sort to change the order of the y elements. That reduces the problem to the question wh...
15 days ago | 0
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how do i automatically select the kernel size like 5*5, 7*7... instead of the 3*3 in the code below
This is a terrible way to write a median filter. Since the use of imnoise indicates that you already have the Image Processing t...
15 days ago | 0
Every program in newer versions of Matlab runs slower, Why?
Some things get slower, some things get faster. It really matters what exact functions you're calling. If I write a function wh...
16 days ago | 0
Saving values from a for loop in a table
Your index only depends on j, so it will overwrite all previous results. Why don't you use a rectangular array to hold the maxi...
16 days ago | 0
Why is a regular expression used in this code?
This syntax is designed to fool the Cody score calculator to think it is using only a few non-complex function calls. In ever...
17 days ago | 4
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how i can solve my the mistake of my code?
If you look at the original, you will see that there isn't a space between the numbers, so if you remove the space after the %d ...
19 days ago | 1
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Expected nsemitones to be one of these types: single, double
The reason this code works when you use input (with str2double) is that you have a number. The code you posted uses the handle ...
19 days ago | 0
best way to update items in arrays value based on -1 and 1
Use find to find out how many leading zeros you have. Then set all zeros to 1 and use cumprod. Then set the leading zeros as req...
20 days ago | 0
