Name at least two differences between and the more well-known function
st_read()
.Download the borders of Germany using rnaturalearth, and create a new object called .Write this new object to a file of the GeoPackage format.
Download the global monthly minimum temperature with a spatial resolution of five minutes using the raster package.Extract the June values, and save them to a file named
tmin_june.tif
file (hint: useraster::subset()
).
Padgham, Mark, Bob Rudis, Robin Lovelace, and Maëlle Salmon. 2018. Osmdata: Import ’Openstreetmap’ Data as Simple Features or Spatial Objects. .
Nolan, Deborah, and Duncan Temple Lang. 2014. XML and Web Technologies for Data Sciences with R. Use R! New York, NY: Springer.
Coppock, J Terry, and David W Rhind. 1991. “The History of GIS.” Geographical Information Systems: Principles and Applications, Vol. 1. 1 (1): 21–43.
To filter features on the server before downloading them, the argument
cql_filter
can be used. Addingcql_filter = URLencode("F_CODE= '27'")
to the command, for example, would instruct the server to only return the feature with values in theF_CODE
column equal to 27.↩To learn more about ESRI Shapefile limitations and possible alternative file formats, visit .↩
Using INT4U is not recommended as R does not support 32-bit unsigned integers.