area: Create an area to apply formatter
In formattable: Create 'Formattable' Data Structures

Description Usage Arguments Details See Also Examples

Create an representation of two-dimenstional area to apply formatter function. The area can be one or more columns, one or more rows, or an area of rows and columns.

1	area(row, col)

`row`	an expression of row range. If missing, `TRUE` is used instead.
`col`	an expression of column range. If missing, `TRUE` is used instead.

The function creates an area object to store the representation of row and column selector expressions. When the function is called, the expressions and environment of row and column are captured for format_table to evaluate within the context of the input data.frame, that is, rownames and colnames are defined in the context to be the indices of rows and columns, respectively. Therefore, the row names and column names are avaiable symbols when row and col are evaluated, respectively, which makes it easier to specify range with names, for example, area(row = row1:row10, col = col1:col5).

format_table, formattable.data.frame

area(col = c("mpg", "cyl"))
area(col = mpg:cyl)
area(row = 1)
area(row = 1:10, col = 5:10)
area(1:10, col1:col5)

$row
[1] TRUE

$col
c("mpg", "cyl")

$envir
<environment: R_GlobalEnv>

attr(,"class")
[1] "area"
$row
[1] TRUE

$col
mpg:cyl

$envir
<environment: R_GlobalEnv>

attr(,"class")
[1] "area"
$row
[1] 1

$col
[1] TRUE

$envir
<environment: R_GlobalEnv>

attr(,"class")
[1] "area"
$row
1:10

$col
5:10

$envir
<environment: R_GlobalEnv>

attr(,"class")
[1] "area"
$row
1:10

$col
col1:col5

$envir
<environment: R_GlobalEnv>

attr(,"class")
[1] "area"