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Rik


Last seen: Today Active since 2017

E-mails with feedback/questions about FEX submissions are welcomed. In general I will post e-mails about Answers on the related page, unless there is good cause not to do so.

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Answered
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 hours ago | 0

Answered
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...

3 hours ago | 0

Answered
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...

16 hours ago | 0

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Answered
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...

24 hours ago | 1

| accepted

Answered
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...

3 days ago | 0

Answered
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, ...

4 days ago | 0

Answered
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; ...

6 days ago | 0

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Answered
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 ...

8 days ago | 0

Answered
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...

8 days ago | 0

Answered
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 ...

8 days ago | 0

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Answered
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,...

8 days ago | 0

| accepted

Answered
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)

11 days ago | 0

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Answered
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 ...

12 days ago | 0

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Answered
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...

13 days ago | 1

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Answered
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...

13 days ago | 0

Submitted


ComputeNonCryptHash
Compute a non-cryptographic hash

14 days ago | 1 download |

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Answered
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...

14 days ago | 0

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Answered
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...

14 days ago | 0

Answered
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...

14 days ago | 0

Answered
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...

15 days ago | 0

Answered
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...

15 days ago | 4

| accepted

Answered
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 ...

17 days ago | 1

| accepted

Answered
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 ...

18 days ago | 0

Answered
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...

18 days ago | 0

Answered
Setting Position of uiaxes within uipanel
For automatically updating positions you should set the unit property to normalized. As for the elements not being fully init...

19 days ago | 0

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Answered
addpath(cd) returns name is nonexistent or not a directory
What do you expect to happen when you call cd without any input? It looks like you actually intend to use addpath(pwd).

21 days ago | 0

Answered
count even numbers of a matrix
This sounds a lot like homework. What did you try? I think you will be able to do it yourself if you read the documentation for ...

23 days ago | 0

Answered
how to add empty in double array xxx = [ NaN 2 3 4 NaN]....Expected Value [ '' 2 3 4 '' ]
That is not possible. You will either have to use a cell array, or remove the values entirely. {'',2,3,4,''} [2,3,4]

28 days ago | 0

Answered
Change the range of an array
Essentially your question is this: Given an array A with values ranging between 200 and 1000 How to find p0 and p1 such that B...

29 days ago | 0

Answered
Where can I find the directory for things like '*.xls', '%04df' or something?
I would personally go the easy route and merge the two separate structs, but you could try this: xlsFiles = dir(fullfile(folder...

29 days ago | 1

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