[R] How to view un-sampled data from a randomly sampled dataset
pdalgd at gmail.com
Wed Oct 23 21:36:33 CEST 2013
On Oct 23, 2013, at 20:13 , erinu wrote:
> Hi there-
> I have a 150 row dataset (data). I create "y" a randomly sampled (without
> replacement) set number of observations (40):
> I would like to make a new variable "x" that contains the leftover
> non-sampled 110 observations. I am sure there is a fairly easy way to do
> Any help would be greatly appreciated.
Just hold on to the indices:
s <- sample(1:nrow(data), 40, replace=FALSE)
y <- data[s,]
x <- data[-s,]
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Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Email: pd.mes at cbs.dk Priv: PDalgd at gmail.com
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