get_merra2_grid: Get MERRA-2 grid

In energyRt/merra2ools: R-tools to process MERRA-2 data (NASA) with focus on renewable energy

Get MERRA-2 grid

Description

Get MERRA-2 grid

Usage

get_merra2_grid(
  type = "polygons",
  locid = NULL,
  lon = c(-180, 180),
  lat = c(-90, 90),
  crs = 4326,
  add_lonlat = FALSE,
  add_poles_points = TRUE,
  ...
)

Arguments

type	type of grid-data to return, spatial points ("points") or polygons ("poly")
locid	(optional) integer vector of location identifiers for which the grid will be returned.
lon	numeric vector (min and max) with the range of longitude coordinates of the grid to return. Default 'c(-180, 180)'.
lat	numeric vector with the range of latitude coordinates of the grid to return. Default 'c(-180, 180)'.
crs	target coordinate reference system: object of class 'sf::crs', or input string for 'sf::st_crs'. Default '4326'.
add_lonlat	logical, should merra-points coordinates ('lon', 'lat') be added to the data. FALSE by default.
add_poles_points	logical, in the case of "polygons" grid, should points at poles be added to the data. TRUE by default.
...

Value

Returns 'sf' object with MERRA-2 grid, points or polygons. If polygons requested, grid of will be returned where MERRA2 coordinates are considered as centers of every polygon, except cells with 'lat = -90' or 'lat = 90'. Spatial points will be returned for the cells near poles.

Examples

x <- get_merra2_grid()
head(x)
getGrid("poly", "sf")
getGrid(lon = c(-70, -60), lat = c(30, 40), class = "df")

energyRt/merra2ools documentation built on May 2, 2024, 4:53 a.m.