類型有很多種類如下:
Constant      Description
G_NORMAL_MAP      This map type (which is the default) displays a normal street map.
G_SATELLITE_MAP      This map type displays satellite images.
G_AERIAL_MAP      This map type displays aerial imagery.

(Since 2.193)
G_HYBRID_MAP      This map type displays a transparent layer of major streets on satellite images.
G_AERIAL_HYBRID_MAP      This map type displays a transparent layer of major streets on top of aerial imagery.

(Since 2.193)
G_PHYSICAL_MAP      This map type displays maps with physical features such as terrain and vegetation. This map type is not displayed within map type controls by default.

(Since 2.94)
G_MAPMAKER_NORMAL_MAP      This map type displays a street map with tiles created using Google Mapmaker.

Note: When you use a Mapmaker map type, users will only see maps in countries where Google Map Maker is launched.

(Since 2.145)
G_MAPMAKER_HYBRID_MAP      This map type displays a transparent layer of major streets created using Google Mapmaker on satellite images.

Note: When you use the Mapmaker maptype, users will only see maps in countries where Google Map Maker is launched.

(Since 2.145)
G_MOON_ELEVATION_MAP      This map type displays a shaded terrain map of the surface of the Moon, color-coded by altitude. This map type is not displayed within map type controls by default.

(Since 2.95)
G_MOON_VISIBLE_MAP      This map type displays photographs taken from orbit around the moon. This map type is not displayed within map type controls by default.

(Since 2.95)
G_MARS_ELEVATION_MAP      This map type displays a shaded relief map of the surface of Mars, color-coded by altitude. This map type is not displayed within map type controls by default.

(Since 2.95)
G_MARS_VISIBLE_MAP      This map type displays photographs taken from orbit around Mars. This map type is not displayed within map type controls by default.

(Since 2.95)
G_MARS_INFRARED_MAP      This map type displays a shaded infrared map of the surface of Mars, where warmer areas appear brighter and colder areas appear darker.

(Since 2.95)
G_SKY_VISIBLE_MAP      This map type shows a mosaic of the sky, covering the full celestial sphere.

(Since 2.95)
G_SATELLITE_3D_MAP      This map type, in conjunction with the Google Earth Browser Plug-in, displays a fully interactive 3D model of the Earth with satellite imagery. This map type is not displayed within map type controls by default.

Adding this map type to your map not only adds a control for the Google Earth map type, but also handles initialization of the map type once a user clicks on the control. If a user currently does not have the Google Earth Plug-in installed in their browser, the first time a user selects this map type, the user will be prompted to download and install the Plug-in and restart their browser.

For users that have already installed the plugin, selecting this map type will create an Earth instance for the map and display a 3D view of the Earth. You may use GMap2.getEarthInstance() to retrieve this Earth instance and manipulate it using the Google Earth API.

Currently, markers, infowindows, and polylines work with this 3D map type, but other features are not yet supported. We plan to add support for more features in future releases.

(Since 2.113)
G_DEFAULT_MAP_TYPES      An array of the first three predefined map types described above (G_NORMAL_MAP, G_SATELLITE_MAP, and G_HYBRID_MAP).
G_MAPMAKER_MAP_TYPES      An array of the Mapmaker map types described above (G_MAPMAKER_NORMAL_MAP, G_SATELLITE_MAP, and G_MAPMAKER_HYBRID_MAP).
G_MOON_MAP_TYPES      An array of the two Moon types defined above (G_MOON_ELEVATION_MAP and G_MOON_VISIBLE_MAP).
G_MARS_MAP_TYPES      An array of the three Mars map types defined above (G_MARS_ELEVATION_MAP, G_MARS_VISIBLE_MAP, and G_MARS_INFRARED_MAP).
G_SKY_MAP_TYPES      An array of the one sky map type defined above (G_SKY_VISIBLE_MAP).