Cast geometry to another type: either simplify, or cast explicitly — st_cast • sftime

Cast geometry to another type: either simplify, or cast explicitly

Usage

# S3 method for sftime
st_cast(x, to, ..., warn = TRUE, do_split = TRUE)

Arguments

x: An object of class sftime.
to: character; target type, if missing, simplification is tried; when x is of type sfg (i.e., a single geometry) then to needs to be specified.
...: ignored
warn: logical; if TRUE, warn if attributes are assigned to sub-geometries
do_split: logical; if TRUE, allow splitting of geometries in sub-geometries

Value

x with changed geometry type.

Examples

# cast from POINT to LINESTRING
g <- st_sfc(st_point(1:2), st_point(c(2, 4)))
time <- Sys.time()
x <- 
  st_sftime(a = 3:4, g, time = time) %>%
  dplyr::group_by(time) %>%
  dplyr::summarize(do_union = TRUE) %>%
  st_cast(to = "LINESTRING")