Delete Every even(uneven) row from a dataset

Question

What is the most elegant way to delete every even/uneven row from a data-frame in R? My first try was to enter the numbers of every second row "by hand" (See below)

(SmallerDataFrame <- OriginalDataFrame[-c(2,4,6,8,10,12),])

might be easier to approach as - delete every even (or odd) row, then go from there. — cgage1, Aug 23 '16 at 16:16

score 15 · Accepted Answer · edited Aug 23 '16 at 16:22

15

Try this

dat <- mtcars$cyl
toDelete <- seq(0, length(dat), 2)

toDelete

dat <-  dat[-toDelete, ]

For data frame,

dat <- mtcars
toDelete <- seq(1, nrow(dat), 2)
dat[ toDelete ,]

edited Aug 23 '16 at 16:22

Rich Scriven

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answered Aug 23 '16 at 16:16

USER_1

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Delete Every even(uneven) row from a dataset

1 Answers1