2 nearest neighbors of each side of vector
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eden kisos
il 17 Nov 2019
Commentato: eden kisos
il 17 Nov 2019
I have two vectors:
A= 2 8 3 6 1 9 5 4 3 7 10 %ranperm(10)
i=1:10
I would like to find for every i , the two closest neighbors of each side.
For example:
for i=1
neighbors= 2,8
for i=2
neighbors= 2,3,6
for i=3
neighbors= 2,8,6,1
for i=10
neighbors= 4,3
...
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Image Analyst
il 17 Nov 2019
This will do it:
A= [2 8 3 6 1 9 5 4 3 7 10] %ranperm(10)
for k = 1 : length(A)
firstIndex = max(k-1, 1);
lastIndex = min(k+1, length(A));
neighbors{k} = A(firstIndex:lastIndex);
end
celldisp(neighbors) % Display in command window.
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Steven Lord
il 17 Nov 2019
Are there specific operations you want to perform on those neighbors? The moving statistics functions on this documentation page may perform those operations directly (if you want to add them see movsum, for example) or serve as building blocks to help you perform those operations.
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