I am trying to merge features (polygons) from 7 subregions in ArcGIS (v10.x). Merge goes fine but when I do any other process on it (e.g. Adding a field, calculations etc), the merged file is corrupted. When I want to view the shapefile I get a message "Open Failed ... Number of shapes do not match number of table records"
I tried to check geometry of the merged file (before any process was launched) and found 4 self-intersections. I tried to repair geometry to fix them but it did not help!
The version I am using is 10.2.0.3348. Unfortunately the files are heavy (each over 2GB, there are 7) to upload. Besides, they are from the Provincial Ministry and I am not sure if I could put them in the public domain.
I received the data as a geodatabase (certain forest operations in individual management units of a region). I need to extract a few variables from this data to join with another large dataset at regional scale for further analyses (décisions are at regional scale). I had earlier scripted the entire process in Python (which was working fine on several other regions). Since my script was always looking for shapefiles (and moreso I am unsure of working with geodatabases directly), I extracted individual shapefiles.
The initial process is supposed to merge the shapefiles into a region, add a few fields and calculate them. The merge goes through but no other process on it (e.g. add field).
@Polygeo, the process works on a subset (perhaps the subset did not have self-intersection issues)?
I displayed all the data in ArcMap, exported them as individual shapefiles, merged, made a new copy (through export) of the merge, and still have the same problem.