# 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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**Feeds**

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...

2 giorni fa | 0

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...

19 giorni fa | 0

| accettato

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 ...

23 giorni fa | 0

| accettato

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:...

circa un mese fa | 1

| accettato

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...

circa un mese fa | 1

| accettato

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...

circa 2 mesi fa | 0

| accettato

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...

circa 2 mesi fa | 0

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 ...

circa 2 mesi fa | 0

| accettato

Inviato

Wayback Machine API

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

2 mesi fa | 1 download |

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 ...

2 mesi fa | 0

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...

3 mesi fa | 0

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 ...

3 mesi fa | 0

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...

3 mesi fa | 0

Inviato

ifversion

Determine if the current version satisfies a version restriction

3 mesi fa | 2 download |

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';'...

3 mesi fa | 0

| accettato

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; ...

3 mesi fa | 0

| accettato

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...

3 mesi fa | 0

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...

3 mesi fa | 1

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 ...

4 mesi fa | 0

| accettato

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...

4 mesi fa | 1

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 mesi fa | 0

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 mesi fa | 1

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 mesi fa | 0

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...

5 mesi fa | 0

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 ...

5 mesi fa | 0

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...

5 mesi fa | 2

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...

6 mesi fa | 0

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...

6 mesi fa | 0

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...

6 mesi fa | 0