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Rik


1.549 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
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...

12 días ago | 1

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...

12 días ago | 0

| accepted

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...

13 días ago | 0

Answered
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...

13 días ago | 1

| accepted

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) =...

14 días ago | 0

| accepted

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...

14 días ago | 0

| accepted

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...

15 días ago | 0

| accepted

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...

16 días ago | 1

Answered
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 ...

17 días ago | 1

| accepted

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...

20 días 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...

20 días ago | 0

Answered
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) ...

21 días ago | 1

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

21 días ago | 0

Answered
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...

23 días ago | 0

Answered
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...

24 días ago | 0

| accepted

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 ...

27 días ago | 0

| accepted

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.

27 días ago | 0

Answered
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...

28 días 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 ...

28 días 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...

28 días 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...

29 días ago | 0

| accepted

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 ...

29 días ago | 0

| accepted

Answered
Return a vector with the same size as the indexing matrix/vector (code optimization)
I would have expected Matlab to have consistent behavior, but before now I hadn't bothered to look it up in the documentation. Y...

29 días ago | 1

| accepted

Answered
off figure in matlab
You need to define a group array if you want to use the off switch. The <https://www.mathworks.com/help/stats/anova1.html docume...

alrededor de 1 mes ago | 0

| accepted

Answered
Error message: Brace indexing is not supported for variables of this type.
The uigetfile function only returns a cell array if the user actually selects multiple files. The person writing the code should...

alrededor de 1 mes ago | 0

| accepted

Answered
WTH happened to "hold on all" in 2019b
Nowhere in the documentation could I find any mention of hold on all being a valid syntax. Before R2014b on and all had a differ...

alrededor de 1 mes ago | 1

Answered
From a set of curves, how to find the one that the "most similar" to the reference curve?
Apart from all the 'boring' strategies of using tried and tested goodness-of-fit parameters (many of which are implemented in ba...

alrededor de 1 mes ago | 0

Answered
Image Processing Averaging Filter
This should show you one of the multiple way to do this. %clc;clear all;%you aren't printing anything to the command window, no...

alrededor de 1 mes ago | 0

Answered
removing NaN values from mat file
A(isnan(A))=[];

alrededor de 1 mes ago | 1

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