Hi,
May be this helps:
dat1 <- structure(....
res <- dat1[!(duplicated(dat1$date) & dat1$admit==0),]
A.K.
I want to remove duplicate dates if the value of admit is 0. How could I realize
this in R? ?Reproducible sample data is here:
structure(list(date = structure(c(13879, 13879, 13880, 13880,
13881, 13881, 13882, 13882, 13883, 13883, 13884, 13885, 13886,
13886, 13887, 13887, 13888, 13888, 13889, 13889, 13890, 13891,
13891, 13892, 13893, 13893, 13894, 13894, 13895, 13895, 13896,
13896, 13897, 13897, 13898, 13898, 13899, 13899, 13900, 13900,
13901, 13901, 13902, 13902, 13903, 13903, 13904, 13904, 13905,
13905, 13906, 13906, 13907, 13907, 13908, 13908, 13909, 13909
), class = "Date"), admit = c(1, 0, 1, 0, 2, 0, 1, 0, 3, 0, 0,
0, 4, 0, 2, 0, 1, 0, 3, 0, 0, 2, 0, 0, 2, 0, 1, 0, 5, 0, 2, 0,
2, 0, 1, 0, 4, 0, 3, 0, 1, 0, 4, 0, 6, 0, 8, 0, 3, 0, 3, 0, 3,
0, 2, 0, 4, 0)), .Names = c("date", "admit"), row.names =
10152:10209, class = "data.frame")