5. The non-transitory computer-readable storage medium of claim 1 , wherein the apparatus is caused, at least in part, to further perform: determining coordinates for a location in the metric vector space depicted by the map image and associated with the pixel extent.
5. The non-transitory computer-readable storage medium of claim 1 , wherein the apparatus is caused, at least in part, to further perform: determining coordinates for a location in the metric vector space depicted by the map image and associated with the pixel extent. 6. The non-transitory computer-readable storage medium of claim 5 , wherein the apparatus is caused, at least in part, to further perform: causing, at least in part, a storing of the pixel extent and the coordinates.