projections: Projections
In choisy/sptools: Additional Functions for Spatial* Objects

Description Usage Format Source Examples

Pre-defined CRS

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proj0

projVN

CRS objects as defined in the sp package:

proj0: unprojected coordinates on the GWS84 datum
projVN: EPSG:3405 aka VN-2000 aka UTM48N

http://spatialreference.org

library(sf)
# working on the provinces polygons of Vietnam:
vn_prov <- gadmVN::gadm()
vn_prov <- sf::as_Spatial(vn_prov)
crs(vn_prov)
vn_prov2 <- sp::spTransform(vn_prov, projVN)
crs(vn_prov2)
vn_prov3 <- sp::spTransform(vn_prov2, crs(vn_prov))
crs(vn_prov)