I just downloaded the new app for the Ipad (Forester GPS GIS App). Could I get the user defined Michigan Georeference coordinate system patch?

You have already created the user-defined coordinate system for Michigan in your CMT-Forester 10 PC software. Information for user-defined coordinate systems is stored in the user_cor.sys file.

To make the user-defined coordinate systems available for use with the Forester GPS GIS app on the iPad, simply copy the user_cor.sys file from your PC to the documents folder for the Forester GPS GIS. If you have user-defined datums as well, then also copy user_dat.sys to the app’s documents folder. If you have defined plain NEZ coordinate system using your PC software, then also copy user_pla.sys to the app’s documents folder. Please change the file names to be in lower-case letters before copying them to the iPad.

iCMTGIS II, iGPSGIS II, Utility Data Collection, Forester GPS GIS, Forester GPS GIS II, Farming GPS GIS and Farming GPS GIS II provide the ability to use various standard coordinate systems as well as special coordinate systems defined by using our PC mapping software. These apps will also let you define a local NEZ plane in the field.

What is a user-defined coordinate system?

The LLA and UTM coordinate systems are generally accepted coordinate reference systems worldwide. However, some states in the USA, such as Michigan, Mississippi and Oregon, adopt their own plane projection as a standard spatial reference for their state agencies to present their spatial data and maps. Other regions in the other countries may also have their own  spatial projection standards.

PC-GIS, PC-GPS and PC-MAPPER will let you define your own datum and enter the specifications for a projection plane  based on the Transverse mercator, Mercator, Oblique mercator, Lambert conformal conic, Albers Equal Area conic, Double Stereographic projection. The user-defined coordinate systems are stored in the file named user_cor.sys. You can add this file to the Document folder for the iCMTGIS or iGPSGIS via iTunes. Then your user-defined coordinate systems will become available in the iCMTGIS and iGPSGIS apps, and you may select one of them as the active coordinate system.