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Rik


Last seen: Today
1 723 total contributions since 2017

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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Answered
How to read .params file via matlab?
Reading text files to Matlab variables is one of the most commons tasks. One of the many, many functions is my readfile function...

35 minuter ago | 0

Answered
Global variables when doing Matlab array job in a cluster
I don't have a direct link to the doc, but I'll take Walter's word for it: "The initial value of the global variables will not ...

ungefär 4 timmar ago | 0

| accepted

Answered
Outputs for smoothdata function
As you can read in the documention for the smoothdata function the first output is the smoothed data. It will not actually produ...

ungefär 7 timmar ago | 0

Answered
splitapply with own created function
You can probably get around this by wrapping your function in an anonymous function: fun=@(input1)maxperinterval(input1,s); ...

ungefär 7 timmar ago | 0

Answered
can a struct function access struct elements ?
When defining an anonymous function it will have access to all the variables in scope. It doesn't matter how you store that anon...

ungefär 7 timmar ago | 0

Answered
How to simulate the outage probability of user data rate versus signal to noise ratio?
Since that apparently was the solution, I'll post it as an answer: SNR_vector_dB=-20:10:30; %the SNR vector R_th = 0.512; % ...

ungefär 14 timmar ago | 0

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Answered
Pause until input from one of two buttons
You can also unpause uiwait with uiresume, not just by closing the figure.

en dag ago | 0

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Answered
2 popup menus connected
Ynumber=[1;1;2;3;5]; Version={'AP'; 'AP_R' ;'AP' ;'TI1' ;'TI2'}; mytable= table(Ynumber,Version); %Y_selected=get(handles.d...

en dag ago | 0

Answered
请问画三维曲面图时,如果自变量的区间边界是一个函数怎么办?
Use meshgrid or ndgrid to generate a full grid of coordinates. Then you mark all points outside your triangle with inpolygon. Th...

2 dagar ago | 0

| accepted

Answered
Conversion to char from logical is not possible.
You need to pass the option as a parameter to the integral function instead of defining it earlier. I= @(x)((x.^(3).*exp(-x...

3 dagar ago | 0

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Answered
How can I optimize the value of a matrix?
The code below will fit a value for B with the fminsearch function. Note that it is relatively sensitive to a good initial guess...

4 dagar ago | 0

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Answered
Index exceeds the number of array elements (1).
If you set a breakpoint just before that line you will notice the values of all your variables: s is a scalar and L has a value ...

4 dagar ago | 0

Answered
How to remove rows in a matrix based on the first column
I guess this is what you need: data=600000*rand(224836,3); L=data(:,1)<=300000 data(L,:)=[] ;

4 dagar ago | 0

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Answered
Hello guys, I need help.
The indices you get in your last operation can be converted to subscripts, which will correspond to your three inputs. ind=ind(...

5 dagar ago | 1

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Answered
Hi, there is a (1x6) vector that i want to extract values from. I used strings to pick-up the subtitle and now the problem is that i have to extract every value under the subtitle (e.g Oxygen). How to i extract those values without hardcoding ?
It would probably make a more sense to use the table data type instead of a string array that is parsed to separate variables. ...

5 dagar ago | 0

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Answered
Why my GUI keeps producing error when I run it?
You define T like this: Th_1=str2double(handles.Theta_1.String)*pi/180; Th_2=str2double(handles.Theta_2.String)*pi/180; Th_3=...

7 dagar ago | 0

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Answered
How to perform robust line fitting in a binary image
They key is in how you define what a good fit is. The code below uses the root-mean-square of the orthogonal distance between al...

7 dagar ago | 0

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Answered
How do I remove a set of repeated values in a x by 2 matrix?
I think the code below is what you need. There may be much more efficient methods, but this will do as long as this will not be ...

7 dagar ago | 0

Answered
find the next row of an element in a matrix
This probably isn't the fastest solution, but it does get the output you describe. The last loop I had to guess, so let me know ...

8 dagar ago | 1

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Answered
ButtonDownFcn disabled after using matlab rotate 3D tool
As you can read in the <https://www.mathworks.com/help/matlab/ref/rotate3d.html doc>, using the rotate3d function without any in...

8 dagar ago | 0

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Answered
Gray value for each point plot over image
Since the Punkte array contains coordinates, you can convert them to indices. You need a way to translate the x and y positions ...

8 dagar ago | 1

Answered
Matlab function for cumulative power
This code does what you ask without loops. %define inputs r=9; n=4; [a,b]=meshgrid(0:n); exponents=a-b; exponents(expone...

9 dagar ago | 1

Answered
How to use inputs from GUI in a separate script?
This is trivial if you convert your script into a function. With complex functions with many inputs and outputs it would often m...

12 dagar ago | 0

Answered
how to fine repeated value?
If you just wanted to know the repeated values you could use unique to filter each first occurrence, which would leave the repea...

12 dagar ago | 0

Answered
Storing the absor function into my code gives ABSURD error
You need to close all your functions with the end keyword or none of them. Within the same file you cannot mix the two styles. M...

12 dagar ago | 1

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Answered
Function to read a file
The function signature below makes more sense to me. function [a,b,inta,intb]=ReadingApe(file) Then you can input your variabl...

12 dagar ago | 0

Answered
Averaging over specific columns in a for loop not working
You can use cell2mat to convert the cell to a double array. Then it will work with movmean.

13 dagar ago | 0

Answered
Unrecognized function or variable
Inside of this function the variable T doesn't exist. You will have to pass it as a variable, or make this a nested function so ...

13 dagar ago | 0

Answered
patch for old version ?
The imdilate function did exist in that release; it is part of the image processing toolbox. You could write your own alternativ...

13 dagar ago | 0

Answered
Interval mean of array
If you ignore the meaning of the data the solution isn't too difficult. First reshape your vector into 4 by N, then call the ...

13 dagar ago | 0

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