select last column of data frame in r (2 examples) | refer to & extract final variable | ncol & drop
Published 2 years ago • 1.2K plays • Length 3:46Download video MP4
Download video MP3
Similar videos
-
8:06
remove data frame columns by name in r (6 examples) | drop variable | subset, within, select & setdt
-
3:39
subset data frame rows based on factor levels in r (example) | select & extract | logical condition
-
4:09
select data frame columns by logical condition in r (example) | grepl, select & starts_with of dplyr
-
3:18
drop multiple columns from data frame using dplyr package in r (example) | select & one_of functions
-
5:55
calculate group mean & add as new column to data frame (3 examples) | dplyr & data.table packages
-
2:46
get sum of data frame column values in r (2 examples) | calculate variable sums | sum() & colsums()
-
7:46
remove leading & trailing zeros in r (5 examples) | delete start & end of string | sub & str_remove
-
0:16
how to get last row in sql
-
5:06
selecting columns from a data frame using the dplyr select function
-
5:17
append to data frame in loop in r (2 examples) | add new column & row in for-loop | create variables
-
2:51
convert list of vectors to data frame in r (2 examples) | as.data.frame, do.call, rbind & cbind
-
4:03
convert data frame column to numeric in r | example: change factor & character variable | as.numeric
-
9:06
using lods to return the first & last values in a densified data set
-
4:41
merge data frames by two id columns in r (2 examples) | merge() vs. join() function of dplyr package
-
4:57
replace multiple values in several columns of data frame in r (2 examples) | sapply() & replace()
-
4:48
convert data frame column to vector in r (3 examples) | extract variable | $-operator & pull