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Rik


1,556 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
App designer big projects
One possible solution involves two steps: Load the dictionary Reset the texts that are visible with the updated dictionary Yo...

2 days ago | 1

| accepted

Answered
Distance between all points in array and delete the second point if it is less that certian value (Victorized)
After a few runs I think this would be equivalent to your loop version. Note that it generates a matrix of size [n n 3] in one o...

4 days ago | 1

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Answered
Rolling all six numbers on a six sided die
At first I mis-interpreted the question, so that may have caused some confusion. What you can do is create a logical vector wit...

4 days ago | 1

Answered
Sharing information between Callback functions in GUIDE
Because hObject is the handle to your pushbutton, you need to explicitly say you want to get the content of the edit box: z...

4 days ago | 0

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Read .txt and Write in matab
I suspect this is what you need: C=readfile('output.txt');%read the file to a cell array Ca=C(2618:3484);%select the lines ...

5 days ago | 0

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Answered
How to create the combination of zeros and ones matrix in matlab?
Although I have the feeling this might be homework, I'm going to give a complete answer anyway. By a happy coincidence, this cod...

5 days ago | 0

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Answered
No jump in in if-query even though if-statement is true
Not all decimal numbers can be stored in binary as an exact value. This float rounding error can lead to situations like this. Y...

5 days ago | 0

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Answered
fprintf help wont show full statement
Simply pasting what you posted into my copy of Matlab gives a hint about the cause: I get a warning from m-lint (the orange squ...

16 days ago | 2

Answered
How to open several GUIs one at a time in a matlab script?
As long as your GUI functions return a handle to the figure, you can use the <https://www.mathworks.com/help/matlab/ref/uiwait.h...

17 days ago | 0

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Answered
How can I search a cell array for all instances of a character and replace it with something else?
From your description, I suspect the simple fact that it is an asterisk doesn't actually matter. The code below will find all ce...

18 days ago | 0

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Creating a function to return a string into upper and lower case
Matlab did exactly what you asked: you wrote a function with an input, but without an output. I you open this in the Matlab edit...

18 days ago | 1

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Answered
Can't connect all the dots with a line
Store the ratio in an array: %rest of your code ratio=zeros(size(b)); for i=length(b) %rest of your code ratio(i) =...

19 days ago | 0

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Answered
plotting the points near to origin
Your data doesn't seem to fit your plots. The code below should give you an idea of how you could do this. You could also define...

19 days ago | 0

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Answered
how do I find the index of all values which meet a condition within an array ?
With the find function you can look up the linear indices of all non-zero elements in an array. (you can also look up row and co...

20 days ago | 0

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Answered
How to store an image into cell arrays in a loop?
You forgot to call your function: %% Part 3 %Write function %Iterate Gaussian filtering and then subsampling 5 times for Gaus...

21 days ago | 1

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Daily 3d array to monthly- dealing with alternate days in a month and leap years - How to do it?
You don't have another option than just hardcoding the number of days in a month. You can do this in a fancy way using the date ...

22 days ago | 1

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Answered
i split the image pixels into many small matrices
The blockproc function works on distinct blocks. If you want a sliding window operation you need to use a function like nlfilter...

25 days ago | 0

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Answered
calculating percentage change function
You should use = for an assignment and == for a comparison. Another point is that you don't need a conditional for an else, only...

25 days ago | 0

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Manage and produce subplots
It is not too dificult to keep track of you p in a loop: p=0; for n=1:9 p=p+1;%(p=n; would also work for this example) ...

26 days ago | 1

Answered
concat images in order
folder= '/home/user/PycharmProjects/2.5dataconversion/images/patient_1' dest = '/home/user/PycharmProjects/2.5dataconversion/im...

26 days ago | 0

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Parallel for loop in loading files
Removing clear all from your code and loading to a struct (instead of poofing variables into existence) should allow you to repl...

28 days ago | 0

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Distance between ALL(all combinations) points of matrix
Note that you are not calculating only unique combinations. The reason you are only getting a single value is that you are not i...

29 days ago | 0

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Answered
how to convert a 3-d binary array of spherical cordinates into floating type array of cartesian cordinates
If you get my findND function from the FEX you can do this: %find 3D indices in M [r,c,p]=findND(M); %create lookup tables ...

1 month ago | 0

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Answered
b=abs([b;a(i)-a(i+1)]); error
Your loop goes up to 27, and inside the loop you look at i+1. You should let your loop go to |numel(a)-1| instead of 27.

1 month ago | 0

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Why is matlab giving me a a very small number when the answer should be EXACTLY zero?
Because not all numbers can be stored as an exact binary number, some calculations will have rounding errors. %exagerated examp...

1 month ago | 1

Answered
Find and count how many capital characters are in str, and then change them to lower cases USING LOOPS
You can easily do this without loops: s = 'This is my String with CapiTal LETTERS in it. Let''s change them to lowercase uSiNg ...

1 month ago | 0

Answered
blockproc applied to ROI images
Using a nested function will allow you to share variables without having to resort to evalin. As for your actual problem: you co...

1 month ago | 0

Answered
Precise Matrix Power: A^k
It will probably be helpfull to use the Symbolic Math Toolbox, and use the tips explained here. For mod(a^b,k) there is a direct...

1 month ago | 0

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Answered
how to extract data after squeeze the matrix?
Something like this is probably what you're looking for, although it makes it more difficult to compare the same pixel over all ...

1 month ago | 0

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