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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.