how to fill matrix in a specific way

2 views (last 30 days)
lucksBi
lucksBi on 16 Mar 2017
Commented: lucksBi on 16 Mar 2017
Hi I have a matrix like this,
I want to take unique values from column 1 and 2 and sort them. Then create another matrix with rows and columns of sorted matrix and fill it with values in 3rd column of original matrix. like shown in attached image:
Thanks in advance

Accepted Answer

KSSV
KSSV on 16 Mar 2017
A = [11 44 1; 11 33 -1; 22 11 1; 22 44 1; 22 33 1;33 44 1; 33 22 -1; 44 11 1 ;
44 22 -1; 44 33 1] ;
c1 = A(:,1) ; c2 = A(:,2) ;
c1 = unique(c1) ;
c2 = unique(c2) ;
iwant = zeros(length(c1)+1,length(c2)+1) ;
iwant(2:end,1) = c1 ;
iwant(1,2:end) = c2 ;
for i = 2:size(iwant,1)
for j = 2:size(iwant,2)
[val,idx] = ismember([iwant(1,i) iwant(j,1)],A(:,1:2),'rows') ;
if idx~=0
iwant(i,j) = A(idx,3) ;
end
end
end

More Answers (0)

Categories

Find more on Creating and Concatenating Matrices in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!