hablar (version 0.1.0)

convert: Convert data type of columns

Description

Convert data type of columns

Usage

convert(.x, ...)
chr(..., .args = list())
lgl(..., .args = list())
int(..., .args = list())
dbl(..., .args = list())
fct(..., .args = list())
dtm(..., .args = list())
dte(..., .args = list())
convert(.x, ...)

Arguments

...

Scoping functions, see details

.args

extra argument to be passed to support function.

.x

A data.frame

Value

a tbl data frame

Details

The convert function requires a scoped function inside. Column names should not be quoted:.

num

Changes to numeric columns. Usage: convert(.df, num(.x, .y) where .x and .y are column names of .df

chr

Changes to character columns. Usage: convert(.df, chr(.x, .y) where .x and .y are column names of .df

int

Changes to integer columns. Usage: convert(.df, int(.x, .y) where .x and .y are column names of .df

lgl

Changes to logical columns. Usage: convert(.df, lgl(.x, .y) where .x and .y are column names of .df

dte

Changes to date columns. Default origin set to "1970-01-01" Usage: convert(.df, dte(.x, .y) where .x and .y are column names of .df

dtm

Changes to date-time columns (POSIXct). Default origin set to "1970-01-01". Usage: convert(.df, dtm(.x, .y) where .x and .y are column names of .df

fct

Changes to factor columns. Usage: convert(.df, fct(.x, .y) where .x and .y are column names of .df

dbl

Changes to numeric columns. Usage: convert(.df, dbl(.x, .y) where .x and .y are column names of .df

It is also possible to use multiple scoping functions inside convert. For example, convert(.df, num(.x), chr(.y)) works as well.

Examples

# NOT RUN {
# Changing a columns to numeric
# and another one to character
convert(mtcars, num(gear),
                chr(mpg))


# Changing multiple data types on multiple columns
convert(mtcars, int(hp,
                    wt),
                fct(qsec,
                    cyl,
                    drat))

# }