As I mentioned in other posts about Carlson GIS, I am working on a large boundary survey/GIS project. I am inventorying all of the property owned by our local airport.
In Carlson GIS, I cannot have overlapping polygons/polylines. The client is requesting that each parcel be a polygon with attributes, and each easement have the same information. The resulting polygons will end up being overlapping, thus causing potential problems. How does this work in Civil3D or AutoCAD Map? is this possible?
Based upon my research today at lunch, I don't believe that it is possible, even in ArcGIS.
One other question that has been brought up is referencing data in a spreadsheet for the GIS data. In Carlson GIS, the data must reside in a database (*.mdb file). How does Civil3D or AutoCAD Map handle this? It looks like they read a geodatabase based upon my limited research.
Any advice or tips is greatly appreciated.
In civil 3d you can create overlapping "PARCELS" as long as they all on separate "SITES"
autocad stores the data in the .dwg file
It would help if you drew a simple napkin sketch of what your trying to accomplish.
I think what you are trying to do is fairly simple and could probably be performed in a free program called QGIS which works with ArcMap type data sets.
Jimmy I think what you are needing are separate topologies. One for your parcel boundaries and at least one more for easements, more likely several, for different types of easements. In any case each topology must be composed of a "perfect" mosaic of closed polygons that do not overlap, a topology for easements will of necessity contain large polygons that represent areas not covered by easements. Keep in mind that any two easements that overlap will need to be on separate topologies. Once the separate topologies have been created they can be queried into a map session and analyzed based on "overlays".
Thanks for the replies. I am researching how to do this. I really wish Carlson would accomplish this easily. There is not much info on the Carlson GIS module out there.
Based upon the replies above, I tried isolating layers, and using various commands within Carlson GIS to create the appropriate "layers" of polygons, and it appears that I have been able to create the "stacked" polygons, as opposed to "overlapping" polygons.
Thank you again for the replies. It triggered a thought process that allowed me to develop a workflow that I believe will work.
