rgdal (version 0.7-7)

SpatialGDAL-class: Class "SpatialGDAL"

Description

Class for spatial attributes that have spatial locations on a (full) regular grid on file, not (yet) actually read.

Usage

## S3 method for class 'SpatialGDAL':
open(con, \dots, silent = FALSE)
## S3 method for class 'SpatialGDAL':
close(con, \dots)
copy.SpatialGDAL(dataset, fname, driver = getDriver(dataset@grod),
 strict = FALSE, options = NULL, silent = FALSE)

Arguments

con

file name of grid map for opening, SpatialGDAL object for closing

...

other arguments (currently ignored)

silent

logical; if TRUE, comment and non-fatal CPL driver errors suppressed

dataset

object of class SpatialGDAL

fname

file name of grid map

driver

GDAL driver name

strict

TRUE if the copy must be strictly equivalent, or more normally FALSE indicating that the copy may adapt as needed for the output format

options

driver-specific options to be passed to the GDAL driver

Objects from the Class

Objects can be created by calls of the form open. SpatialGDAL(name),, where name is the name of the GDAL file.

Extends

Class Spatial-class, directly.

See Also

SpatialGridDataFrame-class, which is actually sub-classed.

Examples

x <- open.SpatialGDAL(system.file("external/test.ag", package="sp")[1])
image(x[])
image(as(x, "SpatialGridDataFrame"))
summary(as(x, "SpatialGridDataFrame"))
spplot(as(x, "SpatialGridDataFrame"))
# select first 50 rows:
summary(x[1:50])
# select first 50 columns:
summary(x[,1:50])
# select band 1:
summary(x[,,1])
# select first 50 rows, first 50 columns, band 1:
summary(x[1:50,1:50,1])
# get values of first band:
summary(x[[1]])
close(x)