How do we shift the cell of a variable and replace it by NaN?

I have a variable x. The x contains a large number of values. When I open x in the workspace, I see the first value is in the 1st cell, second value is in the second cell and so on. I want to shift the the values from celll 1 to cell 5 and replace the first five cells with NaN. How will we do this?

For example, x = 20, 30, 40, 50, 60

I want to shift these values, therefore my new x after shifting will be NaN NaN NaN NaN NaN 20, 30, 40, 50, 60

Any help will really be appreciated.

Thanks.

Answer 1

[DGM]

It depends what you mean by "shift". Consider the two examples:

x = 20:20:200

x = 1×10

20 40 60 80 100 120 140 160 180 200

a = [NaN(1,5) x] % simply concatenate

a = 1×15

NaN NaN NaN NaN NaN 20 40 60 80 100 120 140 160 180 200

b = [NaN(1,5) x(1:end-5)] % shift right and fill with NaN

b = 1×10

NaN NaN NaN NaN NaN 20 40 60 80 100

[Anu]

thanks so much, @DGM. For now, I want to do the first option, but good to know the later one for the future.