Gets GeoJSON-style list containing footprint of a geedim.mask.MaskedImage
object
gd_footprint(x)
a geedim.mask.MaskedImage
object
list.
if (FALSE) { # gd_is_initialized()
# \donttest{
if (gd_is_initialized())
gd_footprint(gd_image_from_id("USGS/NED"))
# }
}