rgeos

Interface to Geometry Engine - Open Source ('GEOS')

Interface to Geometry Engine - Open Source ('GEOS') using the C 'API' for topology operations on geometries. The 'GEOS' library is external to the package, and, when installing the package from source, must be correctly installed first. Windows and Mac Intel OS X binaries are provided on 'CRAN'. ('rgeos' >= 0.5-1): Up to and including 'GEOS' 3.7.1, topological operations succeeded with some invalid geometries for which the same operations fail from and including 'GEOS' 3.7.2. The 'checkValidity=' argument defaults and structure have been changed, from default FALSE to integer default '0L' for 'GEOS' < 3.7.2 (no check), '1L' 'GEOS' >= 3.7.2 (check and warn). A value of '2L' is also provided that may be used, assigned globally using 'set_RGEOS_CheckValidity(2L)', or locally using the 'checkValidity=2L' argument, to attempt zero-width buffer repair if invalid geometries are found. The previous default (FALSE, now '0L') is fastest and used for 'GEOS' < 3.7.2, but will not warn users of possible problems before the failure of topological operations that previously succeeded.

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Description file content

Package
rgeos
Title
Interface to Geometry Engine - Open Source ('GEOS')
Version
0.5-1
Date
2019-08-03
Depends
R (>= 3.3.0), methods, sp (>= 1.1-0)
Imports
utils, stats, graphics
LinkingTo
sp
Suggests
maptools (>= 0.8-5), testthat, XML, maps, rgdal
NeedsCompilation
yes
LazyLoad
yes
Description
Interface to Geometry Engine - Open Source ('GEOS') using the C 'API' for topology operations on geometries. The 'GEOS' library is external to the package, and, when installing the package from source, must be correctly installed first. Windows and Mac Intel OS X binaries are provided on 'CRAN'. ('rgeos' >= 0.5-1): Up to and including 'GEOS' 3.7.1, topological operations succeeded with some invalid geometries for which the same operations fail from and including 'GEOS' 3.7.2. The 'checkValidity=' argument defaults and structure have been changed, from default FALSE to integer default '0L' for 'GEOS' < 3.7.2 (no check), '1L' 'GEOS' >= 3.7.2 (check and warn). A value of '2L' is also provided that may be used, assigned globally using 'set_RGEOS_CheckValidity(2L)', or locally using the 'checkValidity=2L' argument, to attempt zero-width buffer repair if invalid geometries are found. The previous default (FALSE, now '0L') is fastest and used for 'GEOS' < 3.7.2, but will not warn users of possible problems before the failure of topological operations that previously succeeded.
License
GPL (>= 2)
URL
SystemRequirements
GEOS (>= 3.2.0); for building from source: GEOS from http://trac.osgeo.org/geos/; GEOS OSX frameworks built by William Kyngesburye at http://www.kyngchaos.com/ may be used for source installs on OSX.
RoxygenNote
6.1.1
Packaged
2019-08-05 08:42:50 UTC; rsb
Author
Roger Bivand [cre, aut] (), Colin Rundel [aut], Edzer Pebesma [ctb], Rainer Stuetz [ctb], Karl Ove Hufthammer [ctb], Patrick Giraudoux [ctb], Martin Davis [cph, ctb], Sandro Santilli [cph, ctb]
Maintainer
Roger Bivand
Repository
CRAN
Date/Publication
2019-08-05 10:10:02 UTC

install.packages('rgeos')

0.5-1

14 days ago

https://r-forge.r-project.org/projects/rgeos/

Roger Bivand

GPL (>= 2)

Depends on

R (>= 3.3.0), methods, sp (>= 1.1-0)

Imports

utils, stats, graphics

Suggests

maptools (>= 0.8-5), testthat, XML, maps, rgdal

Discussions