Obatin the sum from reading columns from 2 matrices
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Hi,
I have matrix A=(5479 x 378) and RowID matrix (15 x 2). I need to get the sum for each column of A for RowIDs 1:15
for id=1:378
for ix=1:1:15
St(ix,1)=sum(new(:,id)([RowID(ix,1):RowID(ix,2)],:));
end
end
Error: ()-indexing must appear last in an index expression.
This is the error I am getting when I run the above code. Can somebody help me to fix that please?
Thanks in advance.
3 commentaires
the cyclist
le 17 Juin 2014
Sorry for continuing to ask questions, but I am trying not to waste your time with an inaccurate solution.
Could you ever have something like
RowID = [1 5; 6 8]
where you are summing more than two consecutive rows?
Réponses (1)
the cyclist
le 17 Juin 2014
Does this do what you want?
numberSets = size(RowID,1);
St = zeros(numberSets,size(new,2));
for ns = 1:numberSets
St(ns,:) = sum(new(RowID(ns,1):RowID(ns,2),:),1);
end
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