R: Class "GDALDriver": GDAL Driver Object

GDALDriver-class {rgdal}

R Documentation

Class "GDALDriver": GDAL Driver Object

Description

GDALDriver objects encapsulate GDAL file format drivers. GDALDriver inherits from GDALMajorObject-class.

Usage

getGDALDriverNames()
gdalDrivers()
getDriverName(driver)
getDriverLongName(driver)
getGDALVersionInfo(str = "--version")
getGDALCheckVersion()
getGDALwithGEOS()
rgdal_extSoftVersion()
getCPLConfigOption(ConfigOption)
setCPLConfigOption(ConfigOption, value)

Arguments

`driver`	An object inheriting from class 'GDALDriver'
`str`	A string, may be one of `"--version"`, `"VERSION_NUM"`, `"RELEASE_DATE"`, `"RELEASE_NAME"`
`ConfigOption`	CPL configure option documented in http://trac.osgeo.org/gdal/wiki/ConfigOptions and elsewhere in GDAL source code
`value`	a string value to set a CPL option; NULL is used to unset the CPL option

Details

getGDALDriverNames, gdalDrivers:: returns all driver names currently installed in GDAL, with their declared create and copy status (some drivers can create datasets, others can only copy from a prototype with a different driver.
getDriverName:: returns the GDAL driver name associated with the driver object.
getDriverLongName:: returns a longer driver name.
getGDALVersionInfo:: returns the version of the GDAL runtime shared object.
getGDALCheckVersion:: checks the version of the GDAL headers used when building the package (GDAL_VERSION_MAJOR, GDAL_VERSION_MINOR) - if the two versions differ, problems may arise (the C++ API/ABI may have changed), and rgdal should be re-installed
getGDALwithGEOS:: because drivers may behave differently if GDAL itself was built with GEOS support, the function uses a heuristic to check whether GDAL has access to the GEOS Union function or not

Objects from the Class

Objects can be created by calls of the form new("GDALDriver", name, handle), where name: a string giving the name of a GDAL driver, handle: used internally; not for public consumption (default = NULL).

Slots

handle:: Object of class "externalptr", from class "GDALMajorObject", used internally; not for public consumption

Extends

Class "GDALMajorObject", directly.

Methods

initialize: signature(.Object = "GDALDriver"): drivername: a string giving the name of a GDAL driver, handle: used internally; not for public consumption (default = NULL)

Note

Loading the rgdal package changes the GDAL\_DATA environmental variable to the GDAL support files bundled with the package.

Author(s)

Timothy H. Keitt, modified by Roger Bivand

Examples

gdalDrivers()
logo <- system.file("pictures/logo.jpg", package="rgdal")[1]
x <- new("GDALReadOnlyDataset", logo)
getDriver(x)
getDriverLongName(getDriver(x))
GDAL.close(x)

[Package rgdal version 1.4-8 Index]