Check the validity of the input projection

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)

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

Value

character proj4string of the object or file

Note

This function was forked from package sprawl, version 0.3.0.

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)
}