Gets GeoJSON-style list containing footprint of a geedim.image.ImageAccessor (for geedim >= 2.0.0) or geedim.mask.MaskedImage (for geedim < 2.0.0) object. See \link{geedim-versions} for more details.
gd_footprint(x)list.
if (FALSE) { # gd_is_initialized()
# \donttest{
if (gd_is_initialized())
gd_footprint(gd_image_from_id("USGS/SRTMGL1_003"))
# }
}