The Join2shp is the internal function that implements the
Shape File Data Joining routine.
Join2shp(shpfile, datavector, dirdest)The Original Grid Shape File
The Effort Count Vector
The File Destination Directory
This function does not return a value.
This function, with a Grid Shape File, an Effort Count Vector and a File Destination Directory,
(see gui_out_grid),
creates a new Grid Shape File annotated with the Effort Count Vector.
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