MATLAB: How to eliminate rows?

MATLAB

a = [30 30 30 10 10 0 0 10 20 20];
 a1 = unique(a);
 a2 = perms([a1,fliplr(a1)]);
 p1 = [a2 , fliplr(a2),a2 , fliplr(a2), a2];
 p2 = p1 (:, 1:length(a));
 ppp = unique(p2,'rows');
pp = permute(ppp, [3 2 1]);

if unique(a) is less than 2 times then i have to eliminate rows in ppp or pp.

Best Answer

threshold = 2;
ppp( sum(ismember(ppp, a1), 2) < threshold, :) = [];

Related Solutions

MATLAB: Array manipulation

while true
  K = find(isnan(PP),1,'first');
  if isempty(K); break; end
  PP(K) = PP(K-1);
end

MATLAB: This question is about making a square matrix of order n x n in which the integers from 1 to ? 2 wind back and forth along the rows. If n=3 then [1,2,3;6,5,4;7;8;9]

n = 3 ; 
A = reshape(1:n*n,n,n)' ; 
A(2:2:end,:) = fliplr(A(2:2:end,:))

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