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Rik


Last seen: Today
2,606 total contributions 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
Downloading and saving Excel files using Matlab
It seems this website blocks requests when it detects non-human requests. You might be able to circumvent this by use the Wayba...

2 hours ago | 0

Answered
theory parts from the documentation -usage
The answer is likely to depend on your jurisdiction. (I am not a lawyer, this is not legal advice) In general, facts are not su...

3 hours ago | 0

Answered
How to plot curves with different colors with "if" conditions
You have nested your if statements, which would have been very easy to spot if you had used the debugger to step through the cod...

4 hours ago | 0

| accepted

Answered
hi i would be thankful if you help me with my question
You can find guidelines for posting homework on this forum here. If you have trouble with Matlab basics you may consider doing t...

5 hours ago | 0

| accepted

Answered
Fetch data from multi dimensional struct
Referencing the field will generate a comma separated list, which you can capture into a cell array like you would expect: %cre...

16 hours ago | 0

Answered
Converting a function into an operator
You can also do the work yourself by implementing mtimes as a method (I mimiced the interface suggested by Matt which ignores th...

20 hours ago | 0

Answered
How to create a minesweeper board using a matrix
The name Matlab stands for 'matrix laboratory'. It would be a shame not to use the array processing powers. If you set the loca...

20 hours ago | 0

Answered
How to delete/cancel trailing zeros in complex and imaginary numbers?
The way data is stored and the way it is displayed is not necessarilly connected. You can influence the way data is presented wi...

21 hours ago | 0

Answered
solve returns variable name instead of value
This is exactly as documented. syms x result=solve(4 == 2+x,x) res=double(result) %convert symbolic to double

21 hours ago | 0

Answered
Saving the outputs of multiple runs of a script
You should not be using a script outside of debugging. If you're only interested in the value of a single variable, you should m...

21 hours ago | 1

Answered
How to use the function quiver in app designer?
You can specify the Parent property: %load example data from the doc load('wind','x','y','u','v') X = x(11:22,11:22,1); Y = ...

23 hours ago | 0

| accepted

Answered
Choose 1 real solution between 4 solutions
You're using a syntax that is no longer valid in Matlab. Since you didn't specify your Matlab release (and posted your code as p...

23 hours ago | 0

| accepted

Answered
CAT arguments dimensions not consistent.
There are several issues with your code. After applying the correct indentation, here are my edits. The source of your error is...

24 hours ago | 1

| accepted

Answered
Count total number of recurring sequences
If you get RunLength from the FileExchange this is fairly easy: data=[0;1;1;1;0;0;0;0;1;0;1;1;1;1]; [~,N] = RunLength_M(data);...

1 day ago | 1

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Answered
Creating a loop inside a script
It sounds like your loop needs to have a shape like this: clear syms x1 x2 x3 x4 x5 x6 T eqn = [ 200*x1-x2-70600 ==0 ...

1 day ago | 0

Answered
Read custom time format from txt or xlsx file
As long as you process each line as a char array it is as easy as simply inserting the colons: %read your file to cellstr with ...

1 day ago | 0

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Answered
Insert text to the image in for loop
Instead of recreating graphics object every iteration of your loop, it is often faster to create the object once and then update...

4 days ago | 0

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Answered
Naming variables from one column Import file
Don't store data in a variable name. You should use cell arrays or fields of a struct instead.

6 days ago | 1

Answered
how can i convert an answer from an inputdlg into a matrix ?
While you could solve it like you suggest, a much better idea (in my opinion) would be to use uigetfile. file = uigetfile opens...

6 days ago | 0

Answered
Graphing data from a .txt file giving error and inaccurate data
You should probably read the file once and then parse the data. I cropped your file, because I don't think the entire thing is r...

7 days ago | 1

Answered
F=Kff*uf - Matrix operation
You were almost there: F = [383.02; 321.39; 0;]; Kff = [634.8 -191.2 -353.6; -191.2 447.3 353.6; -353.6 35...

7 days ago | 0

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Answered
Merge binary images and smooth the edges
I'm not getting as smooth as your example, but this should do as a first approximate. IM=imread('https://www.mathworks.com/matl...

7 days ago | 0

Answered
Turn off "Improve MATLAB by sending user experience" from the command line
Using a function to unwind the settings (casting them to struct), and using comp_struct from the FEX, I found the relevant setti...

7 days ago | 1

Answered
x,y coordinates of text
You can use the Extent property of the text object to find the corners of your text area. The only thing left to do for you is t...

7 days ago | 1

| accepted

Answered
blood vessel segmentation in retinal images
You ran the function without any inputs. You will have to call it with an input, e.g. like this: IM=imread(fullfile('Test Image...

8 days ago | 0

Answered
how can i find and mark indexes on my data?
The answer is already in your question: you should use the find function on your mci array. For clarity, here are the content...

9 days ago | 0

Answered
How can I set the table parameter in .txt output
Because you didn't tell Matlab to use 2 spaces in the FormatSpec. Compare the two versions below (the second line is to provide ...

9 days ago | 0

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Answered
Saving .wav file
You're overwriting the song every time this callback is triggered. You should probably store each note to a field of your guidat...

9 days ago | 0

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Answered
Explanation of "Position" in uitable
Since the units are set to Normalized, the units of the Position property are a percentage of the parent object (generally a fig...

9 days ago | 0

Answered
find previous value in column before specific set value and delete all others
You can use find to create a vector of indices. data=[182 0 195 13 197 2 207 10 210 3 219 9 222 ...

14 days ago | 0

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