[Rspatial-devel] CRS("+proj=longlat +datum=wgs84")

[Edzer Pebesma]

up to now, CRS("+proj=longlat +datum=wgs84") would be accepted when sp
is loaded, but rgdal is not. I modified this into quietly checking
whether rgdal is available:

rgdal::checkCRSArgs used to be checked only when

   if (!is.na(uprojargs) && "rgdal" %in% .packages()) {

I changed this into:

    if (!is.na(uprojargs) && requireNamespace("rgdal", quietly = TRUE)) {

which leads to the following behaviour with only sp loaded:

> CRS("+proj=longlat +datum=wgs84")
Error in CRS("+proj=longlat +datum=wgs84") :
  unknown elliptical parameter name

I think this is good, although it currently breaks packages HSAUR3 and
MapGAM. Shall I contact its authors?
-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi),  University of Münster,
Heisenbergstraße 2, 48149 Münster, Germany; +49 251 83 33081
Journal of Statistical Software:   http://www.jstatsoft.org/
Computers & Geosciences:   http://elsevier.com/locate/cageo/
Spatial Statistics Society http://www.spatialstatistics.info

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