Rik

Last seen: 3 days ago | Active since 2017

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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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Issue loading mat file in different MATLAB versions
Without the mat file, it is impossible to tell what type of object gets loaded in R2023b. It looks as if it gets loaded as an em...

8 days ago | 0

Answered
Indexing in nonsequential order
Your code is so confusing that I don't know what edit to suggest, but I expect you need to use the exist function to check wheth...

8 days ago | 0

Answered
Update multiple objects Position(2) at once
A loop is actually the best way. Using arrayfun will only disguise the loop and cost you performance. Interestingly, cellfun wit...

13 days ago | 0

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Submitted

readdicomfolder
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17 days ago | 1 download |

Answered
Regarding continuity after deactivation of institute email ID linked to MATLAB account.
Just to post a general answer: You can request the login email address of your account to be changed. Your account is not str...

27 days ago | 1

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Solved

surface of parallelogram
Given 2 vectors of each 3 elements, determine the surface of the parallelogram which can be created from these 2 vectors.

1 month ago

Answered
How to get correct pixel size in 2D after cut 3D voxel using obliqueslice
If you use the second output format: [B,x,y,z] = obliqueslice(___) this function already returns the coordinates for each pixe...

1 month ago | 0

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Answered
Bar plot doesn't accept width of 1.0
As you can see, this behavior is caused by the x-values being dates. I suspect the underlying reason is that your data is not eq...

2 months ago | 0

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Answered
compiler.runtime.customInstaller fails to reduce mcr installer size
I don't know why the size doesn't decrease when using the new function. Do you only have these toolboxes installed? If so 'requi...

3 months ago | 0

Answered
make the execution faster
There isn't something specific I notice in your loop code (other than your abundance of colon-indexing). So let's take a look a...

3 months ago | 0

Submitted

ifversion
Determine if the current version satisfies a version restriction

4 months ago | 2 downloads |

Answered
Put variable names into a cell array or string array
Adding to the comments: you are putting data (a description and therefore a property) in the variable name. That is where your d...

4 months ago | 1

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Answered
Everytime I run code the color of lines on my graph changes
That makes sense, since you don't actually set the LineColor property when calling plot (instead you just have a variable with t...

4 months ago | 0

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Answered
App Designer has error in generated code
In this case the syntax error is because the anonymous function is incorrect: app.RawdataPlotterAppUIFigure.CloseRequestFcn = c...

5 months ago | 0

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Undefined function 'hamming' for input arguments of type double
Short answer: The hamming function is part of a toolbox you apparently didn't install. In this case the signal processing toolb...

5 months ago | 0

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Answered
Error in gui_mainfcn
Why did you post this wall of unformated code? Do you expect anyone to actually read it? Lucky for you the error message tells ...

5 months ago | 0

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Answered
Error using montage function
If you check the documentation, which of the syntaxes are you actually using? It looks to me like montage(I,map), while you pro...

6 months ago | 1

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Answered
Save numbers after text pattern in a vector
Having a typo in your needlessly complicated regex doesn't help: meta_file_read=["#--------------------------------------------...

6 months ago | 0

Submitted

ComputeNonCryptHash
Compute a non-cryptographic hash

7 months ago | 1 download |

Answered
Global struct or separate globals for callback optimization?
You should only be using global variables when you have no other option, and you almost always have. In the context of a GUI, y...

7 months ago | 0

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Answered
How do I preallocate memory
A third way to do it: loop backwards. for ii = numel(hucPoly):-1:1 This also replaces the call to the length function. I...

7 months ago | 1

Answered
Big CSV file read in matlab
You can use fgetl to read a single line. Do that in a loop to retrieve 5000 lines (or something like that). Then you do whatever...

7 months ago | 0

Answered
save tic toc in duration style
The code below removes the cargo cult programming, removes the sprintf where you aren't actually using it to format a string, an...

7 months ago | 0

Answered
How to keep the original layout in the full screen or when maximizing the GUI of a MATLAB App ?
You should set the units to Normalized. That will scale the sizes of the buttons as you expect. There is an art to this, sinc...

8 months ago | 0

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Answered
looping thru multiple line data in UIAxes plot and writing all X,Y data to an array
I would suggest a struct array. That way you can store all relevant properties and you can fairly easy recreate the line objects...

8 months ago | 0

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Reading in .txt File
Your file is not a table, but is more like a struct. Usually such a file would use a JSON format, but you are not in luck. Wh...

8 months ago | 0

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Answered
How do I close an open instrument handle following an error?
You may be interested in oncleanup. When a variable goes out of scope, that function can run code. Alternatively you can put ...

8 months ago | 0

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Answered
Please help me make my code more efficient
I don't see any way to fundamentally change how your code works to speed it up, other than performing the row swaps in one call:...

9 months ago | 1

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Answered
How to save matrix as a "pretty print" image?
Depending on your definition of pretty, you can use my text2im function. If you use sprintf, don't forget to transpose the array...

9 months ago | 1

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Answered
How do I get the x and y values of the zoomed in portion of a linear plot from matlab figure?
You can use the XLim and YLim properties to find out the exact x and y ranges. Then you can use logical indexing to select the p...

9 months ago | 0

| accepted

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