Autodesk 15606-011408-9330 User Guide - Page 144

Creating a New Map Help Index maps creating Help Index newmap.mwf To create a new map, you start with either the map of the world or another existing map. To create a new map, you can use one of two methods: 
Open the map of the world using the File New command, specify the area and settings you want, and then save it as a new map. Use this method if you do not have any existing maps, or if you need to create a map of a larger area than your existing maps. 
Open a map of the specific area you want using the File Open com- mand, make modifications, and then save it as a new map. Use this method if you want to create a map that is similar to an existing map and uses the same area or a smaller area within it.  For step-by-step instructions, choose Help Contents, click the Index tab, and look up "maps, creating." Changing the File to Use for New Maps By default, the map of the world shown in the illustration on page 125 is the  basis for any new map you create using the File New command in Autodesk MapGuide® Author. The file used to create new maps is called Newmap.mwf. If you prefer to start with a different map for all new maps that you create, you can do so by saving your own map as Newmap.mwf, over-  writing the default new map. For more information, choose Help Contents, click the Index tab, and look up "newmap.mwf." Specifying a Coordinate System Help Index coordinate systems specifying The coordinate system you use determines which projection, center, and unit of distance measurement you will use for this map. The default coordinate system is World-Miller, which is an appropriate coordinate system for a map of the entire world. Specifying the correct coordinate system is a critical part of setting up the map. Even if you created the map based on an existing map, you should still verify that the coordinate system you are using is right for your purposes, particularly if you are using a much smaller area than the original map. For more information about how to choose an appropriate coordinate system, see "Choosing a Coordinate System" on page 119. 144 | Chapter 8 Creating and Publishing a Map