# Rik

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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**Content Feed**

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...

9 days ago | 0

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...

16 days ago | 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...

17 days ago | 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...

20 days ago | 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...

24 days ago | 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 ...

26 days ago | 0

Submitted

Wayback Machine API

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

29 days ago | 3 downloads |

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...

1 month ago | 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...

2 months ago | 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...

2 months ago | 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...

2 months ago | 0

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...

2 months ago | 0

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...

2 months ago | 0

| accepted

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...

2 months ago | 0

Setting the editor (not Live editor) text and background colors from code

I always run MATLAB Schemer after I install Matlab. You can dig into the code to find the actual field you can use. It might no...

2 months ago | 1

My datastructure only contains the last subjects information. So in my for loop the structure is getting overwritten. How can I change this?

Your last line overwrite the struct every iteration. Using indexing will create an array: Datastructure(i) = Input_Data( .....

3 months ago | 0

Submitted

ETA_disp

Display the estimated time of completion of a looping process

4 months ago | 1 download |

Insert array into larger array with unknown number of dimensions

It will probably hurt performance, but you could calculate the linear indices with sub2ind. Alternatively, you can use this tri...

4 months ago | 1

| accepted

precision of string conversion using string()

Let's first replicate what you show: my_fun([],@string) my_fun([pi]) my_fun([pi 1]) my_fun([pi 100]) my_fun([pi 127]) my_f...

4 months ago | 1

| accepted

Change colors (of groups) in scatter plot

As the documentation explains, you can set the colormap: a = [37 98 1; 35 94 1; 33 97 1; ...

4 months ago | 1

| accepted

Error using matlab.internal.math.interp1, Sample points must be unique.

interp1 is not intended to fit equations. There are other tools to do that. If you insist on using this function, you will eithe...

4 months ago | 0

Help creating a function

You need to call your function the same way you call builtin functions. If you use the green triangle, your function will be run...

4 months ago | 0

| accepted

Submitted

ifversion

Determine if the current version satisfies a version restriction

4 months ago | 3 downloads |

How to use pdist2 command for distance calculation?

I don't expect the performance to be great, but you can use the option of specifying the distance calculation function. D = pdi...

4 months ago | 0

How to calculate the dice similarity coefficient

Let's first see what you have in those mat files: s1=load('prediction.mat') s2=load('groundtruth.mat') So you have two equal-...

4 months ago | 0

| accepted

Could a Phd uses a license Trial in a commercial company?

You should read the license agreement for a trial license. Since the PhD is in this case working for a commercial company, the ...

5 months ago | 0

How to determine frequency of a specific matrix row in MATLAB?

Let's first create the same variables William created: N=10000; A=randi(9,N,1); B=randi(9,N,1); C=randi(9,N,1); X=[A,B,C]; W...

5 months ago | 1

Repeated Measures Bland-Altman

Your questions is a statistics question, not a Matlab question. But no, this is not appropriate, since the presumtion underlyin...

5 months ago | 1

| accepted