[R] command to change some vars to missing into my dataset

Rui Barradas ru|pb@rr@d@@ @end|ng |rom @@po@pt
Thu Jul 5 23:24:54 CEST 2018


What type of data do you have? A vector? Or is it a matrix, a 
data.frame, a list, etc?

Suppose it is a vector named x. Then you could do something like

rate <- 0.2
is.na(x) <- sample(length(x), rate*length(x))

At an R prompt type


Hope this helps,

Rui Barradas

Às 21:28 de 05-07-2018, Adam Z. Jabir escreveu:
> Hi,
> I want to simulate missing at random for my dataset. Do you know an easy way to do it?
> I want to try not to have the missing�s for the same observations. I mean if one observation is been selected randomly to have missing I don�t want to have all the var of the same obs missing.
> I want to be able to choose rate of missing that should be applied.
> Thanks,
> Adam
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