Creating a matrix with repeating the same numbers.

Hi, i am back with one more question.

If 't' is any variable, let's keep t=10

i need a matrix

A=[1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11]

if t=11, i need

A=[1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12]

Any help will be appreciated. this is because of my project.

Answer 1

[dpb]

Not a lot of work there...

v=repmat([2:t],2,1);
A=[1 v(:).' t+1];

[Jagadesh Rao]

i received this error.

">> v=repmat([2:t],2,1); A=[1 v(:) t+1].'; Error using horzcat Dimensions of matrices being concatenated are not consistent."

Thanks for your effort. any help will be appreciated.

[dpb]

misplaced the .' as (:) returns column vector...amended.

[Jagadesh Rao]

it helped thanks..

please see if you can answer this.

http://www.mathworks.com/matlabcentral/answers/160971-if-function-in-matrix-elements

[dpb]

Looks like Roger S was already by...