![]() You can load the scales into the ArcMap drop-down list of scales by doing the following: But how do you know what those scales are? In this case, you should only design your map at those scales. Users of your map service will want to see it at the scales used by ArcGIS Online, Google Maps, and Bing Maps. Design at the same scales used by ArcGIS Online, Google Maps, and Bing Maps The WGS 1984 Web Mercator (auxiliary sphere) coordinate system is an equivalent coordinate system that simplifies the datum transformations required for some datasets. ![]() If you do not change the coordinate system at the time you are designing your map, it is automatically changed at the time you attempt to create a map cache using the ArcGIS Online/Bing Maps/Google Maps tiling scheme.Įarlier versions of ArcGIS recommended using the WGS 1984 Web Mercator projected coordinate system. Click Projected Coordinate Systems > World > WGS 1984 Web Mercator (auxiliary sphere).Right-click the data frame name (the default is Layers) in the ArcMap table of contents and choose Properties.To change the coordinate system, follow these steps: Change the coordinate system to WGS 1984 Web Mercator (auxiliary sphere) When designing your map, use the WGS 1984 Web Mercator (auxiliary sphere) coordinate system, which is the same coordinate system used by ArcGIS Online, Google Maps, and Bing Maps. You'll originally create the map in ArcMap by adding data and symbolizing it appropriately. If you plan to overlay your map service with ArcGIS Online, Google Maps, or Bing Maps, follow this workflow when you create your map: Author the map Matching the tile dimensions and scales of these online map services leads to fast-performing overlays in client applications. When you build a map cache, you can choose to match the tile dimensions and scales used by ArcGIS Online, Google Maps, or Bing Maps. Define the map cache tiling scheme and publish the map as a service.
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