Indexing one particular dimension regardless of number of dimensions
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a structure of several dimension (7 right now) that I will be adding dimensions to in the future. In a section of my code I need to isolate the third dimension into it's three components which right now I do like
outX = in(:,:,1,:,:,:,:); outY = in(:,:,2,:,:,:,:); outZ = in(:,:,3,:,:,:,:);
Is there a way to generalize this without having to edit the number of colons in the statement?
ex:
outX = coolFunction(in,3,1); outY = coolFunction(in,3,2); outZ = coolFunction(in,3,3);
Thanks!
0 commentaires
Réponse acceptée
Guillaume
le 23 Fév 2015
function out = coolFunction(in, dim, page)
validateattributes(dim, {'numeric'}, {'scalar', 'positive', '<=', ndims(in)});
validateattributes(page, {'numeric'}, {'scalar', 'positive', '<=', size(in, dim)});
alldims = arrayfun(@(d) 1:d, size(in), 'UniformOutput', false);
alldims{dim} = page;
out = in(alldims{:});
end
2 commentaires
Guillaume
le 23 Fév 2015
Basically, it creates a cell array (with arrayfun) where each cell is an array from 1 to the size of each dimension (what colon would do), then replace the cell of the required dimension with just the page number you want in that dimension.
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Matrix Indexing dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!