gdal: GDAL version, supported file formats, and cache size

In terra: Spatial Data Analysis

GDAL version, supported file formats, and cache size

Description

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.

Usage

gdal(warn=NA, drivers=FALSE, lib="gdal")
gdalCache(size=NA)
setGDALconfig(option, value="")
getGDALconfig(option)

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 3
drivers	logical. If TRUE a data.frame with the raster and vector data formats that are available.
lib	character. "gdal", "proj", or "geos", or any other value to get the versions numbers of all three
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

Value

character

See Also

describe for file-level metadata "GDALinfo"

Examples

gdal()
gdal(2)
head(gdal(drivers=TRUE))

terra documentation built on Oct. 13, 2023, 5:08 p.m.