Rik

Last seen: 2 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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readdicomfolder
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8 days ago | 1 download |

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...

1 month 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...

2 months ago | 0

Submitted

ifversion
Determine if the current version satisfies a version restriction

2 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...

2 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...

2 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...

3 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...

3 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 ...

4 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...

4 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=["#--------------------------------------------...

4 months ago | 0

Submitted

ComputeNonCryptHash
Compute a non-cryptographic hash

5 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...

5 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...

5 months ago | 1

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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...

5 months ago | 0

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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...

6 months ago | 0

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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...

6 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...

6 months ago | 0

Answered
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...

6 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 ...

7 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:...

7 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...

7 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...

7 months ago | 0

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Answered
cannot find downloaded files!
These download+install programs tend to download file in two locations: your downloads folder and your temp folder. I don't know...

8 months ago | 0

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Concatenating a cell array
The assignment tells you to use a for loop. So even if it can be solved without one, let's do it. But before we can do that, we ...

8 months ago | 0

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Submitted

Wayback Machine API
This functions acts as an API for the Wayback Machine (web.archive.org).

8 months ago | 1 download |

Answered
Evaluating function handles without writting inputs
The only way I can think of would be by wrapping the anonymous functions. x=5;y=10; f=@(x,y) x.^2+y.^2; f=@() f(x,y); phi ...

8 months ago | 0

Answered
Fastest way of opening a text file and converting it to a matrix?
doc fscanf If you know the format, using that knowledge always improves speed, since the more complicated tools don't need t...

8 months ago | 0

Answered
Delete part of a 4D array
Let's try something: try data=rand(4,3,5,6); data(1:2,3,:,:)=[]; catch ME warning('error: %s',ME.message) end ...

8 months ago | 0

Answered
use struct in loop for
I fully agree with Dyuman and Stephen. As to the source of the error in this code: the error message is giving you a hint. So...

8 months ago | 0

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