matrix calculation for matrix

hi everyone,

i need urgent help for my code,

i have A=400x5 matrix, and B=0x5 matrix, i want to take the 10th rows(10 20 30 40 50 60) of the A matrix and equal them to the B matrix

for example , B(5,:)=A(50,:) and B(6,:)=A(60,:) goes like this.

please need help.

Answer 1

[arsenic 陈]

a = zeros(400,5);

b = ones(1,5)

for i = 10:10:400

a(i,:) = b;

end

[mehmet salihi]

how is going to be the for loop when b=ones(40,5).

this is the difficulity of loop

[arsenic 陈]

o i thoght B=0x5 matrix it turns out to be 40*5

Answer 2

[John D'Errico]

Simple. One line. No for loop. Nothing hard.

B = A(10:10:end,:);

[mehmet salihi]

how is going to be the for loop when b=ones(40,5).

this is the difficulity of loop

[mehmet salihi]

ok, that is awesome solution. thank you very much

[arsenic 陈]

good