project: Projections

In adeckmyn/meteogrid: Gridded meteorological data

Projections

Description

A wrapper for calling proj4 code for standard projections.

Usage

project(x, y, proj=.Last.domain()$projection, inv=FALSE)

Arguments

x, y	Longitude and latitude values (inv=FALSE) or projected values (inv=TRUE). The two vectors must have equal length. NA's are allowed. If y is missing, x is expected to be a vector of length 2 or to have two columns.
proj	A proj4 projection description, given as a list. In the future, a single projection string may also be supported. Default value is the projection of the last geodomain to be plotted.
inv	TRUE indicates inverse projection

Details

This routine calls the proj.4 library of geographical projections. Longitude and latitude values are always in (decimal) degrees, not radians.

Value

A data.frame with columns x and y.

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