This map was created using GPS Visualizer's do-it-yourself geographic utilities.
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The following table lists all of the map types which are currently available in Google Maps created by GPS Visualizer. (The background is set using the gv_options.map_type option). If you want to exclude some of them from your maps, use gv_options.map_type_control.excluded. For example:
Note that you can use either a map's "ID" or its "alias"; the aliases are permanent, but the maps they resolve to may shift over time as different choices become available or unavailable. For instance, 'GV_TOPO_US' points to 'US_ARCGIS_TOPO' as of 2016, but in the future it might point to a different map source; using the alias is recommended, as it will always resolve to the "best" option.