prevR (version 3.3)

is.prevR: Test if an object is of class prevR. This function test if the class of an object is prevR. It could be used to test the slot rings or the slot boundary.

Description

Test if an object is of class prevR. This function test if the class of an object is prevR. It could be used to test the slot rings or the slot boundary.

Usage

is.prevR(object, slot = NULL)

Arguments

object

object to test.

slot

"clusters", "rings","boundary" or "proj".

Value

TRUE or FALSE.

Details

Slots rings and boundary are always present in an object of class prevR, but rings could be NULL and boundary a SpatialPolygons with an attribute named valid with the value FALSE (when boundaries of the studied area have not been specified explicitly).

• If rings is NULL, is.prevR(object,"rings") will return FALSE.

• If boundary has an attribute valid equal to FALSE, is.prevR(object,"boundary") will return FALSE.

See Also

prevR-class.

Examples

# NOT RUN {
col <- c(id = "cluster", 
  x = "x",
  y = "y",
  n = "n",
  pos = "pos",
  c.type = "residence",
  wn = "weighted.n",
  wpos = "weighted.pos"
)
dhs <- as.prevR(fdhs.clusters,col, fdhs.boundary)

is.prevR(dhs)
is.prevR(dhs,"rings")
is.prevR(dhs,"boundary")

dhs <- rings(dhs,N=300)
is.prevR(dhs,"rings")

# }