Editing/deleting data from shapefiles

Discussion created by kmmcbride on May 5, 2014
Latest reply on May 5, 2014 by kmmcbride
I have an xyz file of scanned data from an experimental impact crater.  I am trying to delete or edit out two small outlying areas of data without going through the xyz file and deleting hundreds of points individually.  I have converted the points to a shapefile in Arcmap and have tried to select these areas with the editing tool and "clip" them out of the shapefile.  Nothing happens.  When I try to select the entire crater minus the two small areas I want to exclude, those two areas are somehow attached to other sections of my crater and are included in the selction.

Does anyone out there know how to do this? 

Thanks to any and everyone who has a suggestion!