crsMerc | R Documentation |
Defines CRS's for the several map projections.
crsMerc
crsLL
crsCanada
extentMerc
bboxLLsafe
bboxLL
crsMerc
spherical Mercator projection used by web mapping services, epsg:3857
crsLL
long-lat, epsg:4326
crsCanada
customized oblique mercator for Canada
bboxLL
polygon of bounding box of long-lat, -180 to 180, -90 to 90
bboxLLsafe
as bboxLL, but slightly away from the edges
extentMerc
extent of spherical mercator projections
these objects are used internally and may be of interest to the user
objects of class crs
or numeric vectors.
https://en.wikipedia.org/wiki/Web_Mercator, https://spatialreference.org/ref/epsg/4326/
crs
terra::crs(crsMerc, proj=TRUE)
terra::crs(crsLL, proj=TRUE)
terra::crs(crsCanada, proj=TRUE)
terra::ext(extentMerc)
bboxLLsafe = terra::unwrap(bboxLLsafe)
plot(bboxLLsafe)
plot(terra::project(bboxLLsafe, crsMerc))
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