reproject: Reproject coordinates between coordinate systems

In bodkan/slendr: A Simulation Framework for Spatiotemporal Population Genetics

Reproject coordinates between coordinate systems

Description

Converts between coordinates on a compiled raster map (i.e. pixel units) and different Geographic Coordinate Systems (CRS).

Usage

reproject(
  from,
  to,
  x = NULL,
  y = NULL,
  coords = NULL,
  model = NULL,
  add = FALSE,
  input_prefix = "",
  output_prefix = "new"
)

Arguments

from, to	Either a CRS code accepted by GDAL, a valid integer EPSG value, an object of class crs, the value "raster" (converting from/to pixel coordinates), or "world" (converting from/to whatever CRS is set for the underlying map)
x, y	Coordinates in two dimensions (if missing, coordinates are expected to be in the data.frame specified in the coords parameter as columns "x" and "y")
coords	data.frame-like object with coordinates in columns "x" and "y"
model	Object of the class slendr_model
add	Add column coordinates to the input data.frame coords (coordinates otherwise returned as a separate object)?
input_prefix, output_prefix	Input and output prefixes of data frame columns with spatial coordinates

Value

Data.frame with converted two-dimensional coordinates given as input

Examples

lon_lat_df <- data.frame(x = c(30, 0, 15), y = c(60, 40, 10))

reproject(
  from = "epsg:4326",
  to = "epsg:3035",
  coords = lon_lat_df,
  add = TRUE # add converted [lon,lat] coordinates as a new column
)

bodkan/slendr documentation built on Dec. 19, 2024, 11:41 p.m.