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

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Anu
Anu 2022-1-25
评论： Anu 2022-1-25
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.

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DGM
DGM 2022-1-25
Ran in:
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
  1 个评论
Anu
Anu 2022-1-25
thanks so much, @DGM. For now, I want to do the first option, but good to know the later one for the future.

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