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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Is there any plugin that allows automatic tracking of history of all workspace variables?
Below is my initial implementation of what you need. There are a lot of adaptations still to be made. It implements both a vecto...

1 giorno ago | 0

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Answered
is it possible to convert a python code to a matlab code ?, and if it is how?
The answer depends on the exact code. There is no automated conversion system that will work for all code (limited ones may exis...

3 giorni ago | 0

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Image usage from guide
There is a copyright notice at the bottom of the page. So unless otherwise stated elsewhere, you're not allowed to use this exac...

3 giorni ago | 1

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is Dell 5580 core i5 2.80GHz 16GB 512GB SSD Intel HD Graphics 620 can run matlab 2021?
It seems to satisfy the minimum requirements mentioned on the <https://www.mathworks.com/support/requirements/matlab-system-requ...

7 giorni ago | 0

Answered
Error using plot Invalid subscript for Y.
Let's generate some data and try my suggestion of casting to double: %generate data FO2_Odometer=rand(10,1);Caliper1=rand(10,1...

11 giorni ago | 0

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Answered
Need ideas on how to extract a 30s portion of a wav file and save as a new file
Have you already found a way to read a single wav file? If not, audioread should do what you want. Remember that the second o...

14 giorni ago | 0

Answered
Display mutiple lines in Text area in Matlab App designer
You are replacing the text every iteration. What you need to do is concatenate them. Start with an empty line before the loop, ...

14 giorni ago | 0

Answered
Convert existing MATLAB script into GUI using app designer
The first step is to convert your code to a function. Then you can design your GUI to gather the necessary inputs for that funct...

14 giorni ago | 0

Answered
convert current date and time to char
datestr(now-6/24,31) datestr(now_UTC-6/24,31) If you want to force the use of UTC+0 as the timezone (as your Z seems to sugges...

16 giorni ago | 1

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How to Store emojis when used as an input to text field in App Designer.
Encoding is very important here. CSV files are simply plain text files. That means you need to make sure the encoding allows uni...

16 giorni ago | 0

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Answered
Computing Euclidean distance between 2 points
By doing a matrix multiplication on a vector, you implicitly take the sum over all elements. Note that this will only work if b...

17 giorni ago | 1

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Answered
Multiplying each cell in an array by a column vector
You should use a loop. That makes it a lot easier to write the indexing you need, and it will be faster. Matrix operations are ...

18 giorni ago | 0

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how to count the number of lines of an external txt file
The problem with your question is that it lacks a definition of line. If your file ends with char(10) or char(13) does that sign...

18 giorni ago | 0

Answered
Matlab GUI - storing real time data
For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread. Using GUIDE is a bad ...

21 giorni ago | 0

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Create a GUI interface in MATLAB for simple image functions like reading and displaying??
For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread.

21 giorni ago | 0

Answered
Creating an active graph that allows variables to be updated in real time.
Plot once, and use the callback function of a slider to set the XData and YData properties of that object. Don't forget to ro...

24 giorni ago | 1

Answered
Shading with vertical lines
I have put some inefficient code at the start to integrate over y so you end up with a function of x alone. I then used the same...

25 giorni ago | 0

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Answered
Using function in a serial code
If you insert the body of this function in a different function, you essentially convert this into a script. The downside of a ...

25 giorni ago | 0

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Answered
How do I have my variable output be uniform?
Arrays in Matlab must be rectangular. The image you show does not show how the data is stored, it is merely a display. For longe...

27 giorni ago | 0

Submitted

isnetavl
Check for an internet connection by pinging one of Google's DNSes

circa un mese ago | 2 downloads |

Answered
Continuously pressing GUI slider arrow causes hanging
I would suggest setting a flag (and storing it in the guidata struct). That way you can immediately exit the function if it is a...

circa un mese ago | 0

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Answered
Reset Button in appdesigner
You should be able to adapt my answer <https://www.mathworks.com/matlabcentral/answers/502084-pass-input-data-obtained-from-gui-...

circa un mese ago | 0

Answered
How to make a function file that displays a polynomial and accepts a specific command?
Why do you want to call your function like that? lou(a, b, c) will already work. Anyway: function lou(a,b,c) if nargin=...

circa un mese ago | 0

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Answered
Why does following code don't give any output?
Because the number 3 doesn't exist in your array: data=0.1:0.1:12; [~,ind]=min(abs(data-3)); data(ind) Now, that looks like ...

circa un mese ago | 0

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Answered
Installing a loop for more efficient script
If there is no way to determine these values, you will have to hard-code them somewhere. So you might as well do it in a cell ar...

circa un mese ago | 0

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Answered
Extract data for 3d plated grave
Let's first run your code: figure(1) r=3; th=0:180/30:360; Lgt=length(th); for height=0:4:20; x=r*cos(th); y=r*si...

circa un mese ago | 1

Answered
what are the following C datatypes Equivalents in Matlab
Integer names in Matlab are much more clear than in C: uint8 uint16 uint32 uint64 int8 int16 int32 int64. The ones starting with...

circa un mese ago | 0

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Answered
Trying to convert whole folder into spectrograms
You are inserting all files at once, instead of indexing into the filelist array. If you want want to store an image you need...

circa un mese ago | 0

Answered
find the minmum value in each column of a matrix
If you set all values of 0 to NaN, you can do this simply with the min function. A=[ 0 10.1164 0 0 ...

circa un mese ago | 0

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Answered
Problem with for loop and polyfit
Replace numbered variables with arrays. outLoop = 2; filter = (x1>3); x2 = x1(filter); for r = 1 : numel(outLoop) r...

circa un mese ago | 1

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