Usage
intersectPolyCircle(object, center, radius, ...)## S3 method for class 'owin':
intersectPolyCircle(object, center, radius, npoly = 32, ...)
## S3 method for class 'SpatialPolygons':
intersectPolyCircle(object, center, radius, npoly = 32, ...)
## S3 method for class 'gpc.poly':
intersectPolyCircle(object, center, radius, npoly = 32,
useGEOS = FALSE, ...)