I have some polygon files with extensions of shp, dbf, prj, cor & dsp. ArcCatalog reports "error opening feature class". Any ideas how to convert these to readable shapefiles? .cor may be CorelDraw, probably not Trimble; dsp has me baffled. Thanks!
Regarding .shp, .dbf, and .prj, those are components of a shapefile. Typically, you'll have about 7 file components of a shapefile - not all are required, but you absolutely must have at least the following:
Here's the complete list:
Shapefile - Wikipedia, the free encyclopedia
Make sure the shapefile you are attempting to open has the three mandatory files - I would recommend you have the .prj as well, so long as it's valid (looks like you do). If you don't have it, but are 100% certain of the projection, you can define this in ArcMap using the Define Tool. Like I said, only use this if you need to define the .prj and know the projection used to create the shapefile originally.
Here's some info on salvaging a corrupt shapefile, if that's an issue for you:
27429 - Recover a corrupt shapefile
Regarding the other files, it's been awhile, but if I'm not mistaken, a .cor is a post-processed/corrected .ssf - you should be able to export from Pathfinder to shapefile. Regarding the .dsp - this may be related to Optitex (a CAD software); a marker file:
Optitex | 3D Virtual Prototyping, 2D CAD Pattern + Fashion Design Software
Knowledge:CAD File Extension - OptitexHelpEn
Marker:Save As - OptitexHelpEn
I have no experience with this software...
Use ArcMap and see if the Add Data option will open the shapefile.
Retrieving data ...