find main folder of gdal installation

Source: R/find_gdal.R

Helper function to identify the folder of the GDAL installation, and its version

find_gdal()

Value

character full path to the gdal installation folder. The returned object contains a version attribute that can be used to retrieve the GDAL version. The function first checks if the path was already retrieved and set in the "sprawl_gdalpath" global variable. If not, it tries to locate the path using (in sequence): 1. Sys.which() 2. gdalUtils::gdal_setInstallation(ignore_fullscan = TRUE) 3. gdalUtils::gdal_setInstallation(ignore_fullscan = FALSE)

If all fails, the function aborts. If a valid installation is found, then the global variable "sprawl_gdalpath" is set (this allows not to have to continuously look for the gdal folder on later executions)

Examples

 gdalpath <- find_gdal()
 gdalpath
#> [1] "/usr/bin"
#> attr(,"version")
#> [1] "2.3.2"