Make.domain: Create a geographic grid.

In adeckmyn/meteogrid: Gridded meteorological data

Create a geographic grid.

Description

This function returns a geodomain with the given parameters.

Usage

Make.domain(projtype="lambert", clonlat, nxny, dxdy, exey=NULL,
            reflat=clonlat[2],reflon=clonlat[1],tilt=0, earth=list(R = 6371229))
Make.domain.RLL(Lon1, Lat1, SPlon, SPlat, SPangle=0, nxny, dxdy)

Arguments

projtype	The projection type. Possible values include "lambert","mercator", "omerc" (oblique mercator) and "lonlat".
clonlat	The c(lon,lat) co-ordinates of the center point of the domain.
nxny	The c(nx,ny) number of grid points, i.e. the dimensions of the required grid.
dxdy	The resolution in meter. For lat-lon projection, the unit is (decimal) degrees.
exey	Extension zone (ref. ALADIN domains). This is only added as an attribute and does not influence the domain itself. But if the domain is later saved in FA format, this is added to the grid dimensions.
reflat	The reference latitude of the projection.
reflon	The reference longitude of the projection.
tilt	Only for rotated mercator.
Lon1, Lat1, SPlon, SPlat, SPangle	HIRLAM-style rotated LatLon grid: rotation of South Pole.
earth	The earth shape description (in proj4 format). Default is a sperical earth .

Value

A geodomain domain. Make.RLL is a special function for Rotated LatLon using the HIRLAM conventions, which require location of the rotated South Pole.

Examples

## Not run:
## Not run: 
newdom <- Make.domain("lambert",clonlat=c(50.5,3.5),nxny=c(128,128),dxdy=c(8500,8500),reflon=50.5,reflat=3.5)
plot(newdom,add=FALSE)

## End(Not run)
## End(Not run)

adeckmyn/meteogrid documentation built on Jan. 13, 2025, 11:02 p.m.