Compensate the vector with the last entry
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mingcheng nie
on 25 Apr 2023
Answered: Steven Lord
on 31 Jul 2024 at 15:29
I have a length L vector contains some numbers, I want to compensate this vector to length K, where K > L, with repeating the last entry of the vector. For example, the vector is [2 4 7 3], after compensate, it will be [2 4 7 3 3 3 3 3]. I hope there is an efficient way to do so because I actually have more than 10^4 vectors to compensate.
Thanks,
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Stephen23
on 25 Apr 2023
"I hope there is an efficient way to do so because I actually have more than 10^4 vectors to compensate."
Do you really have 1e4 separate vectors stored in the workspace? How did you get them all there?
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Steven Lord
on 31 Jul 2024 at 15:29
If you were using release R2023b or later, you could use the paddata function with the Side name-value argument and either the FillValue name-value argument or the Pattern name-value argument with the 'edge' pattern.
x = [2 4 7 3]
y = paddata(x, 7, Side = 'trailing', Pattern = 'edge')
Or to show FillValue with a different value:
y = paddata(x, 7, Side = 'trailing', FillValue = -999)
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