Apply a function to each element of a vector and bind to an sfc object

Apply a function to each element of a vector and bind to an sfc object

map_sfc(.x, .f, ..., .crs = NA_crs_, .precision = 0,
  .check_ring_dir = FALSE)

map2_sfc(.x, .y, .f, ..., .crs = NA_crs_, .precision = 0,
  .check_ring_dir = FALSE)

Arguments

.x

Vectors of the same length. A vector of length 1 will be recycled.
.f

A function, formula, or vector (not necessarily atomic).

If a function, it is used as is.

If a formula, e.g. ~ .x + 2, it is converted to a function. There are three ways to refer to the arguments:

  • For a single argument function, use .

  • For a two argument function, use .x and .y

  • For more arguments, use ..1, ..2, ..3 etc

This syntax allows you to create very compact anonymous functions.

If character vector, numeric vector, or list, it is converted to an extractor function. Character vectors index by name and numeric vectors index by position; use a list to index by position and name at different levels. If a component is not present, the value of .default will be returned.
...

Additional arguments passed on to the mapped function.
.crs

Coordinate Reference System. See sf::st_crs() for details.
.precision

Numeric. Precision applied to every coordinate, expressed as a scale factor. For instance 1000 to round to three decimals.
.check_ring_dir

Logical. Check that the polygon ring directions are counter clockwise and holes are clockwise, order is correct it if not. Default to `FALSE``.
.y

Vectors of the same length. A vector of length 1 will be recycled.

See also

purrr::map() sf::st_sfc