Crop an STTDF object using a SpatialPolygons object

Description

Get all points from an STTDF object that overlay with a SpatialPolygons object and return as an STTDF object

Usage

1
crop(sttdf, pol)

Arguments

sttdf

a STTDF object

pol

a SpatialPolygons object

Value

results return an STTDF object

Author(s)

Jinlong Yang: jinlong@psu.edu

References

TBA