rpostgis
The rpostgis
package provides an interface between R and
PostGIS
-enabled
PostgreSQL
databases to transparently
transfer spatial data. Both vector (points, lines, polygons) and
raster data are supported in read and write modes. Also provides
convenience functions to execute common procedures in
PostgreSQL
/PostGIS
.
Warning
Due to retirement of the package rgeos
, rpostgis
will retire in September 2023.
- For vector operations, please check package
sf
, which provides a mechanism to connect to PostGIS databases. - For raster operations, no alternative solution is identified yet.
- For general database operations, use 'RPostgreSQL' directly.
If you are interested in the development and maintenance of rpostgis
, please
check this issue on the GitHub
repository.
For more information on R-spatial evolution, visit: https://r-spatial.org/.
Installation of the released versions
You can install the latest released version from CRAN:
install.packages("rpostgis")
You can then use update.packages()
to update to the latest CRAN
version.
Installation of the development versions
A stable version of the package is always available on the project's
GitHub page, and may be ahead of
the CRAN version. To install it, use the
remotes
:
remotes::install_github("mablab/rpostgis")
For the latest (possibly unstable) development version, use:
remotes::install_github("mablab/rpostgis", ref = "dev")
Getting started
rpostgis
relies on a working connection provided by the
RPostgreSQL
package to a PostgreSQL database, e.g.:
conn <- RPostgreSQL::dbConnect("PostgreSQL", host = "localhost",
dbname = "<DB_NAME>", user = "<USER>", password = "<PASSWORD>")
Note: as of
rpostgis 1.4.3
theRPostgres::Postgres()
driver is also allowed for connection objects; however, this should be considered experimental and is not recommended for most use cases.
Once the connection is established, the first step is to check if the
database has PostGIS
already installed (and install it if it's not
the case):
pgPostGIS(conn)
If the function returns TRUE
, the database is ready and functional.
You can check the geometries and rasters present in the database with:
pgListGeom(conn, geog = TRUE)
pgListRast(conn)
To terminate the session, close and clear the connection with:
RPostgreSQL::dbDisconnect(conn)
Documentation
Full documentation with the complete list of functions of the package
can be found on rpostgis
homepage.