I am using Surfer 10.7.972.
My map is based on location data in Texas State plane xy format.
I would like to import surface geology data from USGS shape files. I have a choice between:
TXgeology-arc.shp, or TXgeology-polygon.shp
both type files come with their own set of dbf, prj, sbn, sbx and shx files.
The usgs data is for the entire state of Texas, my map is 100X200 miles, so I need to restrict or clip the import.
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