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Rik


Last seen: Today 2017 年からアクティブ

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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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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:...

13日 前 | 1

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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...

16日 前 | 1

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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...

21日 前 | 0

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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...

約1ヶ月 前 | 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 ...

約1ヶ月 前 | 0

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

約1ヶ月 前 | ダウンロード 1 件 |

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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 ...

約1ヶ月 前 | 0

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readdicomfolder
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約2ヶ月 前 | ダウンロード 1 件 |

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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...

約2ヶ月 前 | 0

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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 ...

約2ヶ月 前 | 0

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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...

約2ヶ月 前 | 0

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ifversion
Determine if the current version satisfies a version restriction

約2ヶ月 前 | ダウンロード 2 件 |

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how to do for loop 2nd level?
Your code can be optimized, but here are the minimal changes. beam = {'A';'B';'C';'D';'E';'F';'G';'H';'I';'J';'K';'L';'M';'N';'...

2ヶ月 前 | 0

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Store values from loop
If you want to store results from all iterations, you need to store them and not overwrite them: res1 = cell(1,100);index = 0; ...

2ヶ月 前 | 0

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M-scripting tutorial
If you want to learn the Matlab basics you may consider doing the Onramp tutorial (which is provided for free by Mathworks). If...

2ヶ月 前 | 0

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Using string variable names for dot indexing
You're missing parentheses: varnames = {'rsrp_nr' 'sinr_nr'}; T=table(pi,2*pi,VariableName={'rsrp_nr' 'sinr_nr'}) T.(varnames...

2ヶ月 前 | 1

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define function in one line
I don't know if you want to avoid anonymous functions as well, but this should give you a finer plot: % p = sin(t) when t<0.6 ...

3ヶ月 前 | 0

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Clear distinction between positive and negative in colorbar
I would suggest using the top half of viridis and the bottom half of plasma (or the reverse). You can get both of them here. Th...

3ヶ月 前 | 1

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how can I extract values from a struct matrix that contains only one value to make single matrix from it?
Using numbered field names is a bad idea. It is almost as bad as using numbered variable names directly. The solution is to use...

4ヶ月 前 | 0

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What to do if my script gives error "The input was too complicated or too big for MATLAB to parse"?
I know I'm almost 7 years late to the party, but I just ran into this problem and was able to find a source and solution. For m...

4ヶ月 前 | 1

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I have a matrix problem to solve; A = (:,1) and B = (:,1) and C(:,1) matrixes. This I need in the tensor form like shown in the figure. How to calculate the determinant.
Use the zeros and size functions to generate the zeros row by row. Once you have the matrix you can use the det function to calc...

4ヶ月 前 | 0

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Coding practices to simplify complex functions
I would suggest using a struct (or Name,Value pairs) for functions with more than 4 inputs. The attached function allows parsing...

4ヶ月 前 | 0

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I have algorithm I have estimated the data pretty well , but I 'm not able to forecast it .
As the error message is telling you, the problem is here; error('Forecast:TooFewSamples','The data should contain at least %d ...

4ヶ月 前 | 0

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AppDesigner in headless mode (without GUI)
I'm not aware of a way to use an AppDesigner app without the app, so I doubt you will like my suggestion: You should extract th...

4ヶ月 前 | 2

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install add-on
Windows is picky with spaces in the path, so you need to add double quotes. The command below might do the trick. cd "C:\Pr...

5ヶ月 前 | 0

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Help, my matlab mex file format is weird
When I download it, it isn't a plain text file. Often when people attempt to download a file from github, they save the web v...

5ヶ月 前 | 0

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How to plot 4d bar with 4 column vectors?
For this small number of elements, I would try plot3, with the 4th dimension replaced by color. Once you get to many more dat...

5ヶ月 前 | 0

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Why MATLAB R2023b requires macOS 12.6? Would 12.3 work?
Each Matlab release has a range of OS versions that are officially supported. This is only the official list. It is very well po...

5ヶ月 前 | 0

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Transforming workspace into table using script in MATLAB
Since it is a variable in the main workspace, it is already available in scripts. However, you should not use scripts for serio...

5ヶ月 前 | 0

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How to increase speed of a multi-vector calculation
The iterations are not interdependent, so you should be able to use a parfor loop instead. You could consider performing thos...

5ヶ月 前 | 0

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