I am brand new to using geographic data in R and I keep running into an error:
NOTE: rgdal::checkCRSArgs: no proj_defs.dat in PROJ.4 shared files
I believe that this is due to an old version of PROJ (4.9.0), and I have found a good deal of discussion surrounding this topic but I have been unsuccessful in fixing this issue - mostly due to that I don't fully understand the answers posted on this topic i.e. "add missing file to proj folder" What file? Is my project folder the same as my working directory?. I tried reinstalling
rgdal, with the following commands:
install.packages("rgdal", configure.args = c("--with-project-include=/p/bin/proj4/include", "--with-proj-lib=/p/bin/proj4/lib", "--with-proj-share=/p/bin/proj4/share/proj"))
But I get the same error. I am a Mac user. Can someone walk me through how to deal with this error?