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Custom Projection migration

October 13 2011 | 0 comments
Categories: ArcGIS Methods, Map Data

Is there a way to import or export from a central location, a custom projection?

Ergo; If I start a new map can I pull a centrally located projection for use in any map?

Mapping Center Answer:

There are a couple of ways to do this:

  1. Add custom .prj files to your ArcGIS install's Coordinate Systems folder. If they're geographic or projected, put them in the respective subdirectory. From here, they can be used in ArcCatalog or ArcToolbox, etc. If you instead define one in ArcMap and save to Favorites, before the next release (10.1), ArcToolbox and ArcCatalog can't access those definitions. At 10.1, the coordinate systems folder is going away, so you can place custom .prj files in the Favorites location.
  2. Keep a set of data centrally located that have the custom coordinate systems you want to use. You can then use the "Import" option to access the definitions.
  3. The Coordinate Systems folder is identified by a registry key. You could set up a custom Coordinate Systems set on a server and then have all installs point to it. It would increase network traffic, of course.

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