I have an input array 'z' with which I want to create an array 'p' in the way given below. The length and values of 'z' is varying. How I can register 'p' for every case of 'z'. Thank you

z=[-0.5,-0.25,0,0.25,0.5]; 

p=zeros(1,2*(length(z))-2);

p(1)=z(1);

p(end)=z(end);

and

p should look like this

p=[-0.5,-0.25,-0.25,0,0,0.25,0.25,0.5]

[KSSV]

YOu got -0.25 and +0.25 extra? How and why?

[Nihal Rao]

z is the coordinates of 4 layers/ply (difference gives thickness) and p is the coordinates of the top and bottom layers of each ply

Answer 1

[Stephen23]

>> z = [-0.5,-0.25,0,0.25,0.5];

In two lines using repmat:

>> p = repmat(z,2,1);
>> p = p(2:end-1)
p =
  -0.50000  -0.25000  -0.25000   0.00000   0.00000   0.25000   0.25000   0.50000

Or in one line using indexing:

>> p = z(ceil((2:2*numel(z)-1)/2))
p =
  -0.50000  -0.25000  -0.25000   0.00000   0.00000   0.25000   0.25000   0.50000

[Nihal Rao]

Cannot thank you enough!