Rik

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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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13 个提问
3,217 个回答

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已回答
jsonencode of state space model
A=rand(4); B=rand(4); C=[0 0 0 1.9531e+03]; D=0; sys = ss(A,B,C,D); sys_info = jsondecode(jsonencode(sys)); try sys2 ...

8 days 前 | 0

已回答
Can Matlab automatically detect a new value in Excel?
Do you mean Matlab should watch the file to detect when the file edit date&time changes? I am not aware of any listeners that c...

8 days 前 | 0

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已提交

readdicomfolder
placeholder

1 month 前 | 1 次下载 |

0.0 / 5

已回答
I need help for drawing a constraint in Matlab in 2D
I have no clue what you mean mathematically with what you wrote, but if you want to plot a vertical line, you can use xline(): ...

2 months 前 | 0

已回答
.mltbx installer that works on multiple operating systems
Can't you simply include all 3 files? Matlab will select the correct one automatically. As to your point about deciding in co...

2 months 前 | 0

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已回答
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...

3 months 前 | 0

已回答
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...

3 months 前 | 0

已回答
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...

3 months 前 | 0

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已回答
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...

4 months 前 | 1

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已解决

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

4 months 前

已回答
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...

4 months 前 | 0

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已回答
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...

5 months 前 | 0

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已回答
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...

6 months 前 | 0

已回答
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...

6 months 前 | 0

已提交

ifversion
Determine if the current version satisfies a version restriction

6 months 前 | 1 次下载 |

5.0 / 5

已回答
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...

6 months 前 | 1

| 已接受

已回答
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...

7 months 前 | 0

| 已接受

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

8 months 前 | 0

已回答
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...

8 months 前 | 0

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已回答
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 ...

8 months 前 | 0

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已回答
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...

8 months 前 | 1

| 已接受

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

9 months 前 | 0

已提交

ComputeNonCryptHash
Compute a non-cryptographic hash

9 months 前 | 2 次下载 |

0.0 / 5

已回答
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...

10 months 前 | 0

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已回答
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...

10 months 前 | 1

已回答
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...

10 months 前 | 0

已回答
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...

10 months 前 | 0

已回答
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...

10 months 前 | 0

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已回答
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...

11 months 前 | 0

已回答
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...

11 months 前 | 0

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