get_extent: return the exten of a spatial object or file (with...

In IREA-CNR-MI/sprawl: sprawl: Spatial Processing (in) R: Advanced Workflows Library

Description

helper function used to retrieve the extent of a spatial object or file with the associated proj4string

Usage

get_extent(object, abort = FALSE)

## Default S3 method:
get_extent(object, abort = FALSE)

## S3 method for class 'character'
get_extent(object, abort = FALSE)

## S3 method for class 'Raster'
get_extent(object, abort = FALSE)

## S3 method for class 'sf'
get_extent(object, abort = FALSE)

## S3 method for class 'sfc'
get_extent(object, abort = FALSE)

## S3 method for class 'Spatial'
get_extent(object, abort = FALSE)

Arguments

object	character corresponding to the name of a R object, or a filename (full path)
abort	logical if TRUE, the function aborts in case no proj4string or invalid projstring is found, Default: FALSE

Details

return an object of class sprawl_ext with two slots:

• $extent: numeric (4) extent of the object (xmin, ymin, xmanx, ymax)

• $projstring: character proj4string of the object

Value

object of class sprawl_ext

Author(s)

Lorenzo Busetto, phD (2017) [e-mail]

Examples

## Not run: 
 library(raster)

 in_rast <- system.file("extdata", "sprawl_EVItest.tif", package = "sprawl.data")
 get_extent(in_rast)

 in_rast <- raster::raster(in_rast)
 get_extent(in_rast)

 in_vect <- system.file("extdata","lc_polys.shp", package = "sprawl.data")
 get_extent(in_vect)

 in_vect <- read_vect(in_vect)
 get_extent(in_vect)


## End(Not run)

IREA-CNR-MI/sprawl documentation built on May 27, 2019, 1:12 p.m.