r rename column based on variable

1# Rename column by name: change "beta" to "two"
2names(d)[names(d)=="beta"] <- "two"
3d
4#>   alpha two gamma
5#> 1     1   4     7
6#> 2     2   5     8
7#> 3     3   6     9
8
9# You can also rename by position, but this is a bit dangerous if your data
10# can change in the future. If there is a change in the number or positions of
11# columns, then this can result in wrong data.
12
13# Rename by index in names vector: change third item, "gamma", to "three"
14names(d)[3] <- "three"
15d
16#>   alpha two three
17#> 1     1   4     7
18#> 2     2   5     8
19#> 3     3   6     9
20

1colnames(trSamp)[2] <- "newname2"

1rename(df, !!metric:=value)

1df %>% rename(!!variable := name_of_col_from_df)
2

1names(d) <- sub("^alpha$", "one", names(d))
2d
3#>   one two three
4#> 1   1   4     7
5#> 2   2   5     8
6#> 3   3   6     9
7
8# Across all columns, replace all instances of "t" with "X"
9names(d) <- gsub("t", "X", names(d))
10d
11#>   one Xwo Xhree
12#> 1   1   4     7
13#> 2   2   5     8
14#> 3   3   6     9
15
16# gsub() replaces all instances of the pattern in each column name.
17# sub() replaces only the first instance in each column name.
18