How can I select a part of an array between NaN values
2 views (last 30 days)
Show older comments
For example I have an array like this:
T = [NaN NaN; 1 3; 2 4; 5 6; 8 7; NaN NaN; NaN NaN; 4 5; 6 7; NaN NaN; NaN NaN; 1 2; 2 4; 5 6; NaN NaN; NaN NaN; 1 3; 5 6; 8 8; NaN NaN; NaN NaN; 5 3; 6 7; NaN NaN];
now I like to have a code were the user can select a part of this array by typing the number of the part. Number 1 starts after the first NaN NaN and ends with the second NaN:
part1 = [1 3; 2 4; 5 6; 8 7];
number 2 starts after the third NaN NaN and ends for the fourth NaN NaN:
part2 = [4 5; 6 7];
enc. (in this example there are 5 numbers you can select).
0 Comments
Accepted Answer
Andrei Bobrov
on 11 Jun 2014
l = ~isnan(T(:,1));
k = [l(1);diff(l)] == 1;
ii = cumsum(k);
z = (1:size(T,1))';
outc = accumarray(ii(l),z(l),[],@(x){T(x,:)});
N = 2; % the number of the part
out = outc{N};
0 Comments
More Answers (0)
See Also
Categories
Find more on Creating and Concatenating Matrices in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!