CRS for rotated pole projection works with rgdal, but not with sf #651
Description
The EURO-CORDEX climate models use a rotated pole projection described in this document (page 10, table 1)
I've been trying to find the correct CRS to use with SF, but I cannot find it. I tried for example: +proj=ob_tran +o_proj=longlat +o_lon_p=-162 +o_lat_p=39.25 +lon_0=180 +ellps=WGS84, which is accepted by rgdal::CRS and raster::projection, but sf::st_crs fails:
st_crs("+proj=ob_tran +o_proj=longlat +o_lon_p=-162 +o_lat_p=39.25 +lon_0=180 +ellps=WGS84")
Coordinate Reference System: NA
Warning message:
In CPL_crs_from_proj4string(x) :
Cannot import crs from PROJ.4 string `+proj=ob_tran +o_proj=longlat +o_lon_p=-162 +o_lat_p=39.25 +lon_0=180', missing crs returned
rgdal::checkCRSArgs("+proj=ob_tran +o_proj=longlat +o_lon_p=-162 +o_lat_p=39.25 +lon_0=180 +ellps=WGS84")
[[1]]
[1] TRUE
[[2]]
[1] "+proj=ob_tran +o_proj=longlat +o_lon_p=-162 +o_lat_p=39.25 +lon_0=180 +ellps=WGS84"
Why is rgdal ok with this, but not sf?