gdal function

GDAL version, supported file formats, and cache size

Set the GDAL warning level or get a data.frame with the available GDAL drivers (file formats), or, if warn=NA and drivers=FALSE, you get the version numbers of one or all of the GDAL, PROJ and GEOS libraries.

GDAL is the software library that terra builds on to read and write spatial data and for some raster data processing. PROJ is used for transformation of coordinates ("projection") and GEOS is used for geometric operations with vector data.

The current GDAL configuration options and obtained with getGDALconfig and changed with setGDALconfig.

gdal(warn=NA, drivers=FALSE, ...)
gdalCache(size=NA)
setGDALconfig(option, value="")
getGDALconfig(option)
clearVSIcache()
libVersion(lib="all", parse=FALSE)

Arguments

• warn: If NA and drivers=FALSE, the version of the library specified by lib is returned. Otherwise, the value should be an integer between 1 and 4 representing the level of GDAL warnings and errors that are passed to R. 1 = warnings and errors; 2 = errors only (recoverable errors as a warning); 3 = irrecoverable errors only; 4 = ignore all errors and warnings. The default setting is 2
• drivers: logical. If TRUE a data.frame with the raster and vector data formats that are available.
• ...: additional arguments (for backwards compatibility only)
• size: numeric. The new cache size in MB
• option: character. GDAL configuration option name, or a "name=value" string (in which case the value argument is ignored
• value: character. value for GDAL configuration option. Use "" to reset it to its default value
• lib: character. "gdal", "proj", or "geos", or any other value to get the versions numbers of all three
• parse: logical. Should the version be parsed into three numerical values (major, minor and sub versions)?

See Also

describe for file-level metadata "GDALinfo"

Returns

character

Examples

gdal()
gdal(2)
head(gdal(drivers=TRUE))
libVersion("all", TRUE)