prevR (version 2.2)

changeproj,prevR-method: Convert map projection of a object of class prevR.

Description

This function converts map projection (and/or datum) used by an object of class prevR into another one.

Usage

## S3 method for class 'prevR':
changeproj(object, proj)

Arguments

object

object of class prevR.

proj

new map projection.

Value

• Return object expressed in the projection proj.

encoding

utf8

Details

proj could be a character string corresponding to a PROJ.4 projection (see http://trac.osgeo.org/proj/ for more details) or an object of class CRS{sp}. changeproj transform the columns "x" and "y" of the slot clusters of object and convert boundary using the new map projection defined by proj. If applicable, the slot rings will be recalculated.

See Also

spTransform{rgdal}, prevR-class.

Examples

print(fdhs)
plot(fdhs, axes=TRUE, main="Projection: longitude/latitude")

fdhs2 <- changeproj(fdhs,
         "+proj=utm +zone=30 +ellps=WGS84 +datum=WGS84 +units=m +no_defs")
print(fdhs2)
dev.new()
plot(fdhs2, axes=TRUE, main="Projection: UTM Zone 30")