Ignore this text box. It is used to detect spammers. If you enter anything into this text box, your message will not be sent. Example of datum offset between NAD 1927 and NAD 1983 datums in a GCS , Example in which data with the unknown coordinate system is in a GCS, and reference data is in a projected coordinate system , Other issues to consider State plane coordinate system , Universal transverse Mercator (UTM) coordinate system , Testing to identify the projected coordinate system for data , If state plane options do not align the data, test for UTM , Other projected coordinate system options When standard coordinate systems don’t work , Customizing the state plane coordinate system with units of inches , Comparing units of international feet with US survey feet , Saving the custom projection file to disk for future use , Defining the projection using the custom projection file Modifying a standard coordinate system , Working with CAD files in ArcMap , Procedures to address misaligned CAD data , Saving the custom projection file to disk What are geographic transformations? , Geographic transformation methods , Creating and saving a custom geographic transformation in ArcToolbox Applying composite geographic transformations in ArcGIS 10.1 for desktop , Applying composite geographic transformations in the ArcMap data frame , Applying geographic transformations in the project tool in ArcToolbox Geographic coordinate sytems , Projected coordinate systems , Deciding on the projection file in ArcMap , Appropriate use of web Mercator projection Coordinate system definitions provided with ArcGIS for desktop , Coordinate system parameters , What is a geographic coordinate system? , What is a projected coordinate system? , What is a local coordinate system? , Adding x, y data to ArcMap and converting to features in a shapefile or geodatabase feature class , Why buffers displayed in ArcMap are not round ‘Lining Up Data in ArcGIS: A Guide to Map Projections’ is an easy-to-navigate troubleshooting reference for any GIS user with the common problem of data misalignment. Complete with full-color maps and diagrams, this book presents practical techniques on how to identify data projections, create custom projections to align data, and solve common data alignment problems. The second edition is compatible with ArcGIS(R) 10.1 and includes new sections on aligning CAD data and appropriate use of the web Mercator projection. This book will benefit new and experienced GIS users alike. The dissemination of spatial data : a North American-European comparative study on the impact of government information policy Source.