An item's arguments as R, and R as an item's arguments

A card of the builder can be edited as the R a function takes: tfl_args_to_r() writes an item's arguments (its args, as the spec holds them) as the text of a call's arguments – cols = "TRTA", rows = c(group = "variable"); tfl_args_from_r() reads that text back into the item's arguments, each value in the form the spec file holds it (the schema's types: a map for a named vector, !r for an expression, {fn:, args:} for a call of constants), and checks them (tfl_schema_check()). A figure's functions (ggplot, geom_line, labs ...) are read as the figure's content reads them: aes() as a map of columns, the plot's data by its name.

Usage

tfl_args_to_r(fn, args)

tfl_args_from_r(fn, text)

Arguments

fn

The function's name (plan_cells, geom_line).

args

The item's arguments, a named list.

text

The arguments as R: what goes between the call's parentheses.

Value

tfl_args_to_r(): one string. tfl_args_from_r(): the arguments, a named list, with the problems of the check as the attribute problems (none: no rows).

Examples

tfl_args_to_r("plan_cells", list(categorical = "{n} ({p:.1f%})"))
#> [1] "categorical = \"{n} ({p:.1f%})\""
a <- tfl_args_from_r("geom_line", "aes(x = AVISIT, y = mean), linewidth = 0.5")
str(a)
#> List of 2
#>  $ mapping  :List of 2
#>   ..$ x: chr "AVISIT"
#>   ..$ y: chr "mean"
#>  $ linewidth: num 0.5
#>  - attr(*, "problems")='data.frame':	0 obs. of  4 variables:
#>   ..$ fn     : chr(0) 
#>   ..$ arg    : chr(0) 
#>   ..$ level  : chr(0) 
#>   ..$ message: chr(0) 
tfl_args_to_r("geom_line", a)
#> [1] "mapping = aes(x = AVISIT, y = mean), linewidth = 0.5"