matrix operation make matrix

Question

0 个投票

i want to make matrix. for manual way or the output

A=[1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 ... 8 8 8 8 8 8 8 8];

for A, each value until 8 times the value will be add by 1.

b=[1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 ... 1 2 3 4 5 6 7 8];

for b, value 1-8 will be looping until 8 times.

so the size A is 1x64 and B is 1x64

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Andrei Bobrov 2013-3-23

A = kron(1:8,ones(1,8));
B = kron(ones(1,8),1:8);

Azzi Abdelmalek 2013-3-23

kron is less faster

Answer 1

Azzi Abdelmalek 2013-3-23

0 个投票

a=repmat(1:8,8,[]);
b=a'
a=a(:)'
b=b(:)'

Answer 2

Matt Kindig 2013-3-23

0 个投票

A = reshape(repmat((1:8), 8, 1), 1, [])
b = repmat(1:8, 1, 8)