MODIStsp (version 2.1.0)

check_projection: Check the validity of the input projection

Description

helper function used to check that the input projection (passed as UTM zone, EPSG code, WKT string) is a valid projection for MODIStsp.

Usage

check_projection(projection, abort = FALSE, verbose = TRUE)
# S3 method for default
check_projection(projection, abort = FALSE, verbose = TRUE)
# S3 method for numeric
check_projection(projection, abort = FALSE, verbose = TRUE)
# S3 method for character
check_projection(projection, abort = FALSE, verbose = TRUE)
# S3 method for crs
check_projection(projection, abort = FALSE, verbose = TRUE)

Value

character proj4string of the object or file

Arguments

projection

character or integer corresponding to the an EPSG code, a UTM zone (e.g. "32N") or a WKT representation of a projection;

abort

logical if TRUE, the function aborts in case an invalid invalid projection is passed. Otherwise, the function returns "NA", Default: TRUE

verbose

logical if TRUE, return messages

Author

Lorenzo Busetto, phD (2017)

Luigi Ranghetti, phD (2017)

Examples

if (FALSE) {
check_projection("32632")

check_projection("32631")

check_projection(32633)

check_projection(30, abort = FALSE)

check_projection("example of invalid string", abort = FALSE)

proj_wkt <- sf::st_as_text(sf::st_crs(32632))
check_projection(proj_wkt)
}