geo (version 1.4-3)

extract: Extract a grid (?)

Description

Extract a grid (?).

Usage

extract(grd, z, maxn = 10000, limits = NULL, col.names = c("lon", "lat"))

Arguments

grd

Grid

z

Value

maxn

Max number

limits

Limits

col.names

Defaults to lat, lon

Value

Returns a list with components:

grd1

A grid

z

Values over the grid

See Also

Called by geocontour and geocontour.fill.