showWKT {rgdal} | R Documentation |
Use GDAL/OGR spatial reference objects to convert a PROJ.4 representation to a Well-Known Text representation, and report an EPSG code if it can be determined by OGR SRS services.
showWKT(p4s, file = NULL, morphToESRI = TRUE) showP4(wkt, morphFromESRI=TRUE) showEPSG(p4s)
p4s |
A valid PROJ.4 string representing a spatial reference system |
file |
if not NULL, a file name to which the output Well-Known Text representation should be written |
morphToESRI |
default TRUE, morph the WKT string to the representation used by ESRI |
wkt |
A valid WKT character string representing a spatial reference system |
morphFromESRI |
default TRUE, morph the WKT string from the representation used by ESRI |
A character string containing the WKT representation of the PROJ.4 string.
Roger Bivand
https://gdal.org/tutorials/osr_api_tut.html
cities <- readOGR(system.file("vectors", package = "rgdal")[1], "cities") readLines(system.file("vectors/cities.prj", package = "rgdal")[1]) showWKT(proj4string(cities)) showWKT("+init=epsg:28992") showP4(showWKT("+init=epsg:28992")) showEPSG("+proj=utm +zone=30") showEPSG("+proj=longlat +ellps=WGS84")