Is there a way to create a custom coordinate system from an Arc PRJ file? A major city in this area uses their own coordinate system for their GIS and surveying. I wanted to bring some NED data into InRoads, but since the project is not in state plane coordinates, I am stuck.
I opened the PRJ file and while is it ASCII, but there is no explanation of exactly what is what.
And it is all on a single line, so the grouping of the data, which nests multiple times is not easy to follow.
Here is the data 0 I added a space after every comma so it would wrap:
PROJCS["815586_RSO_feet_rotation", GEOGCS["GCS_North_American_1983", DATUM["D_North_American_1983", SPHEROID["GRS_1980", 6378137.0, 298.257222101]], PRIMEM["Greenwich", 0.0], UNIT["Degree", 0.0174532925199433]], PROJECTION["Rectified_Skew_Orthomorphic_Center"], PARAMETER["False_Easting", 349.37],PARAMETER["False_Northing", 2588.1], PARAMETER["Scale_Factor", 1.0], PARAMETER["Azimuth", 0.0], PARAMETER["Longitude_Of_Center", -76.614429], PARAMETER["Latitude_Of_Center", 39.304635], PARAMETER["XY_Plane_Rotation",0.001], UNIT["Foot_US", 0.3048006096012192]]
In addition to the Help file, the steps are documented (with pictures) in this file: http://communities.bentley.com/products/geospatial/desktop/m/geospatial_desktop_gallery/218386.aspx
I copied the seed dty file to a new folder on my network standards area and added the MS_GEOCOORDINATE_USERLIBRARIES to point to the path and filename.
When I open Map, there is no new entry in the GCS dialog box for me to use.
I noticed another variable - MS_GEOCOORDINATE_EDITUSERLIBS which is set to 1 but I cannot locate any info on this variable.
What am I missing? Found a solution - keep reading...
So here is where I decided to open one of the example geospatial files and voila, it showed me the new custom DTY item and I was then able to follow the process. I then opened a few files and the provided seed file and attached the coordinate system. When I export to Google Earth, it lined up like a champ. I aslo got some mister sid files to align, which was my goal from the outset.
Charles (Chuck) Rheault CADD Manager
MDOT State Highway Administration
CADDcop, in the same boat but my interpretation of the prj t othe dty must be off.
Could you attach your dty for comparison?
Thx,
Mike
Here is the one I created based upon the settings in the previously posted prj file contents.