Nothing
.merc <- function() {
# if (PROJ::ok_proj6()) {
# return("EPSG:3857")
# }
# [1] "+proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs"
## testepsg
## "PROJ.4 rendering of [+proj=merc +a=6378137] =
##+proj=merc +lon_0=0 +k=1 +x_0=0 +y_0=0 +R=6378137 +units=m +no_defs
"+proj=merc +R=6378137"
}
.ll <- function() "+proj=longlat +datum=WGS84"
## something we can use to pass on ghub, and on cran
.use_public_key <- function() {
## https://account.mapbox.com/access-tokens/
#ceramic_key <- <disabled>
#Sys.setenv(MAPBOX_API_KEY=ceramic_key)
}
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