How to decompose and expand a vector into ones

Hi,

How would you decompose and expand a vector in Matlab ?

I might not be using the right terminology but let's I = [2, 2]'

How can I multiply that by 12 and get a 1x48 vector filled by ones ?

Answer 1

[Adam Danz]

" I = [2, 2]' How can I multiply that by 12 and get a 1x48 vector filled by ones ?"

My interpretation: you want to multiply (or add?) the elements in I and then you want to multiply that result by 12 to get 48. Then create a row vector of 1s with length 48. Is that right?

 I = [2, 2]'; 
 x = ones(1,prod(I)*12); % prod() or sum() as in madhan's ans

the key is to use ones().

[Blue]

You know you are indispensable, right ? Thanks.

[Adam Danz]

Ha! Glad I could help.

Answer 2

[madhan ravi]

ones(sum(I)*12,1)

[Adam Danz]

"and get a 1x48 vector filled by ones"

You'd need to switch around those terms.

[madhan ravi]

Yup it was intentional.