df <- data.frame(a = c(1, 3, 9, 0),
b = c(12, 98, 90, 20),
c = c(2, 4, 6, 8),
row.names = c('o', 'p', 'q', 'r'))
print(df)
row = df[c(1,3)]
print(row)
# run:
#
# a b c
# o 1 12 2
# p 3 98 4
# q 9 90 6
# r 0 20 8
# a c
# o 1 2
# p 3 4
# q 9 6
# r 0 8
#