Assign a class to columns

Assign a class to a set of column of a data frame. This function is designed to ease the changes of column's class of a given data frame.

assignClass2df(x, colid, cls)

Arguments

x	a data frame or a R object to be coerced into a data frame.
colid	the identity of columns for which class are ti be changed.
cls	a character vector containing the classes' names to be used in the same order as colid. By default cls is repeated until its size equals colid's size.

Value

A data frame for which columns have the required classes.

Examples

df1 <- matrix(signif(runif(20),4), ncol=2)
df2 <- assignClass2df(df1, 2, 'character')
str(df1)
#>  num [1:10, 1:2] 0.0808 0.8343 0.6008 0.1572 0.0074 ...
str(df2)
#> 'data.frame':	10 obs. of  2 variables:
#>  $ V1: num  0.0808 0.8343 0.6008 0.1572 0.0074 ...
#>  $ V2: chr  "0.8746" "0.1749" "0.03424" "0.3204" ...