Read and write well-known text

geos_read_wkt(wkt, fix_structure = FALSE, crs = NULL)

geos_write_wkt(geom, include_z = TRUE, precision = 16, trim = TRUE)

geos_read_geojson(geojson, crs = NULL)

geos_write_geojson(geom, indent = -1)

geos_read_wkb(wkb, fix_structure = FALSE, crs = NULL)

geos_write_wkb(
  geom,
  include_z = TRUE,
  include_srid = FALSE,
  endian = 1,
  flavor = c("extended", "iso")
)

geos_read_hex(hex, fix_structure = FALSE, crs = NULL)

geos_write_hex(
  geom,
  include_z = TRUE,
  include_srid = FALSE,
  endian = 1,
  flavor = c("extended", "iso")
)

geos_read_xy(point)

geos_write_xy(geom)

Arguments

wkt: a character() vector of well-known text
fix_structure: Set the reader to automatically repair structural errors in the input (currently just unclosed rings) while reading.
crs: An object that can be interpreted as a CRS. See wk::wk_crs().
geom: A GEOS geometry vector
include_z, include_srid: Include the values of the Z and M coordinates and/or SRID in the output? Use FALSE to omit, TRUE to include, or NA to include only if present. Note that using TRUE may result in an error if there is no value present in the original.
precision: The number of significant digits to include iin WKT output.
trim: Trim unnecessary zeroes in the output?
geojson: A character() vector fo GeoJSON features
indent: The number of spaces to use when indenting a formatted version of the output. Use -1 to indicate no formatting.
wkb: A list() of raw() vectors (or NULL representing an NA value).
endian: 0 for big endian or 1 for little endian.
flavor: One of "extended" (i.e., EWKB) or "iso".
hex: A hexidecimal representation of well-known binary
point: A list() representing points in the form list(x, y).

Examples

geos_read_wkt("POINT (30 10)")
#> <geos_geometry[1]>
#> [1] <POINT (30 10)>
geos_write_wkt(geos_read_wkt("POINT (30 10)"))
#> [1] "POINT (30 10)"