Extract rows that their columns have specific values

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LH
LH 2022-10-12
回答： VBBV 2022-11-6
Hi,
I have the following matrix:
A = [ 0.1 0 ;
0.5 0 ;
3 0 ;
0 0 ]
and I want to extract the rows that their columns elements are larger or equal to zero and less or equal to one:
for i = 1:size(A,1)
ind = (A(i,:) >=0) & (A(i,:) <=1);
A1 = A(ind,:)
end
The answer should be:
A1 = [0.1 0 ;
0.5 0 ;
0 0 ]
but my code does not give me the last row.
Any help would be appreicted.

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回答（2 个）

KSSV
KSSV 2022-10-12
Ran in:
A = [ 0.1 0 ;
0.5 0 ;
3 0 ;
0 0 ] ;
for i = 1:size(A,1)
ind = (A(i,:) >=0) & (A(i,:) <=1);
A1 = A(i,ind)
end
A1 = 1×2
0.1000 0
A1 = 1×2
0.5000 0
A1 = 0
A1 = 1×2
0 0
VBBV
VBBV 2022-11-6
Ran in:
A = [ 0.1 0 ;
0.5 0 ;
3 0 ;
0 0 ];
for i = 1:size(A,1)
if (A(i,:) >= 0) & (A(i,:) <=1) %
A1(i,:) = A(i,:);
end
end
A1
A1 = 4×2
0.1000 0 0.5000 0 0 0 0 0

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