Set (coerce) the column classes of a dataframe

Source: R/colClasses-set.R

Set (coerce) the column classes of a dataframe

colClasses(df) <- value

Arguments

df

Dataframe like object
value

Character vector containing elements of: "c" (character), "n" (numeric), "f" (factor), "l" (logical)" to set the column classes of df.

Value

A dataframe with coerced columns

Examples

df <- iris[1:10, ]
df

#>    Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#> 1           5.1         3.5          1.4         0.2  setosa
#> 2           4.9         3.0          1.4         0.2  setosa
#> 3           4.7         3.2          1.3         0.2  setosa
#> 4           4.6         3.1          1.5         0.2  setosa
#> 5           5.0         3.6          1.4         0.2  setosa
#> 6           5.4         3.9          1.7         0.4  setosa
#> 7           4.6         3.4          1.4         0.3  setosa
#> 8           5.0         3.4          1.5         0.2  setosa
#> 9           4.4         2.9          1.4         0.2  setosa
#> 10          4.9         3.1          1.5         0.1  setosa
colClasses(df)

#>                class
#> Sepal.Length numeric
#> Sepal.Width  numeric
#> Petal.Length numeric
#> Petal.Width  numeric
#> Species       factor
colClasses(df) <- "nncfc"
colClasses(df)

#>                  class
#> Sepal.Length   numeric
#> Sepal.Width    numeric
#> Petal.Length character
#> Petal.Width     factor
#> Species      character