Trying to find cells of a matrix from vector values

I have 3 vectors
V1( 1; 3; 5;),
V2 (1; 3; 6;),
V3 (2; 3; 4; 5;) and i want to find in a matrix
A ( 1 5 2 4 3 1; 1 5 5 4 8 8; 5 2 4 6 3 10) at the respective row the 2 numbers closest to zero and return the number of the column. in my example it will be for the first row
V1 (1; 3;),
for the second V2 1; 3;),
and for the third V3 ( 2; 5;)
thank you

4 Comments

what is not clear? the way the new vectors are created?
What are your data?, what is the expected result? and how to get this result?
my data are the vectors (V1( 1; 3; 5;),V2 (1; 3; 6;), V3 (2; 3; 4; 5;) ) and the matrix A ( 1 5 3 4 3 1; 1 5 5 4 8 8; 5 2 4 6 3 10), the expected result is V'1 (1; 3;),
V'2 1; 3;),
V'3 ( 2; 5;) and the way to get this is by going to the first row of A (1 5 2 4 3 1) check the columns from V1 values (1 3 5 ) find the two values that is closest to zero, for column 1 A (1,1)= 1 , for 3 A(1,3) = 2 , for 5 A (1,5)=3 and create a new vector V'1 (1,3)

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 Accepted Answer

V1=[ 1; 3; 5]'
V2=[1; 3; 6]'
V3 =[2; 3; 4; 5]'
A =[ 1 5 3 4 3 1; 1 5 5 4 8 8; 5 2 4 6 3 10]
v={V1,V2,V3}
for k=1:size(A,1)
[ii,jj]=sort(A(k,v{k}));
out(k,1:2)=v{k}(jj(1:2));
end
disp(out)

More Answers (1)

V={[1; 3; 5;];[1; 3; 6;];[2; 3; 4; 5;]};
A =[1 5 3 4 3 1; 1 5 5 4 8 8; 5 2 4 6 3 10];
n = numel(V);
out =zeros(n,2);
for jj = 1:n
B = A(jj,V{jj});
[~,ii] = sort(abs(B));
out(jj,:) = B(ii(1:2));
end

3 Comments

?? Error using ==> cellfun All of the input arguments must be of the same size and shape. Previous inputs had size 3 in dimension 1. Input #3 has size 1.
this works but returns the values inside the cells and i want the number of the column that the cell is.

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on 6 Jun 2014

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