Build a Plot from Completed Layer Expressions

Usage

ptr_assemble_plot(plot_expr_list, envir = parent.frame(), expr_check = TRUE)

Arguments

plot_expr_list: A list of completed plot layer expressions.
envir: The evaluation environment. Defaults to parent.frame(), which is the caller's frame. When called from ptr_exec, a cloned runtime environment is passed explicitly. Direct callers should provide an explicit envir to avoid evaluating expressions in an unintended scope.
expr_check: Logical or list controlling safety validation of the assembled expressions. Forwarded to validate_expr_safety. Defaults to TRUE.

Value

A ggplot object assembled from the retained layer expressions. Errors when no plot expressions remain after runtime processing.

Examples

library(ggplot2)

obj <- ptr_parse_formula(
  "ggplot(data = iris, aes(x = Sepal.Length, y = Sepal.Width)) + geom_point()"
)
spec <- ptr_runtime_input_spec(obj)
inputs <- setNames(vector("list", nrow(spec)), spec$input_id)
inputs[spec$role == "layer_checkbox"] <- rep(list(TRUE), sum(spec$role == "layer_checkbox"))
runtime <- ptr_exec(obj, inputs)
plot_obj <- ptr_assemble_plot(runtime$complete_expr_list, runtime$eval_env)
inherits(plot_obj, "ggplot")
#> [1] TRUE