col_type: Set or retrieve a column type

In january3/colorDF: Colorful Data Frames in R Terminal

Description

Set or retrieve a column type of a colorful data frame

Usage

col_type(x, cols = NULL) <- value

col_type(x, cols = NULL)

Arguments

x	a colorful data frame
cols	column names to set or retrieve
value	character vector with column types

Details

Rather than directly assigning a style to a column (which is possible using the col.styles element) it is preferable to change a style associated with a column type. Several such types are defined in the default styles:

• character

• numeric

• integer

• factor

• identifier

• pval

• match

• hidden

• default

Of course, new column types may be defined and their formatting defined in a theme or a particular data frame style.

Examples

mc <- colorDF(mtcars)
col_type(mc, "gear") <- "factor"
col_type(mc, "gear")
col_type(mc) <- list(gear="factor", cyl="integer")
## Note: the *class* of the columns did not change!
## Chaning column type merely changes the way it is displayed
class(mc[["gear"]])

## Hide some columns
col_type(mc, c("disp", "hp")) <- "hidden"

## Create a new type and style
col_type(mc, "carb") <- "carbstyle"
df_style(mc)$type.styles$carbstyle <- list(fg="red", decoration="bold")

january3/colorDF documentation built on Aug. 31, 2020, 2 a.m.