Description Objects from the Class Slots Extends Methods Author(s) References See Also Examples
This class holds the inclusion zone definition for the simple ‘distance limited’ method for sampling down coarse woody debris.
Objects can be created by calls of the form
new("distanceLimitedIZ", ...)
. However, this is not recommended
because the objects are fairly complex. Instead, one can use the object
constructor distanceLimitedIZ
to create new objects.
Most of the slots are described in the superclasses (see below), please see their help pages for more information. This class adds a few slots to the "downLogIZ" class specification.
dls
:Object of class "distanceLimited"
: This
supplies the distance limit for establishing the inclusion zone.
izPerim
:Object of class "matrix"
: A matrix
representation of the inclusion zone in homogeneous
coordinates. This can be manipulated and plotted as desired for
easy access to the inclusion zone where needed.
area
:Object of class "numeric"
: The exact area
of the inclusion zone.
perimeter
:Object of class "SpatialPolygons"
: This is the
inclusion zone perimeter as a “SpatialPolygons” object.
pgArea
:Object of class "numeric"
: This is
the area of the inclusion zone as calculated from the
polygon in the perimeter
slot using the “SpatialPolygons”
object. As such, it is an approximation of the true area of the
inclusion zone, which is given in the area slot. This just enables
us to see how close the graphic representation is to the real
area, and adjust if necessary the number of points defining the
inclusion area perimeter.
Class "downLogIZ"
, directly.
Class "dlsIZNull"
, directly.
Class "InclusionZone"
, by class "downLogIZ", distance 2.
signature(izObject = "distanceLimitedIZ", tract
= "Tract")
: “InclusionZoneGrid” constructor
signature(object = "distanceLimitedIZ")
:
Return the object perimeter
signature(x = "distanceLimitedIZ", y =
"missing")
: Plot the object
signature(object = "distanceLimitedIZ")
: Object summary
Jeffrey H. Gove
A vignette comparing the different variants is available from the author.
Gove, J. H., Ducey, M. J. and Valentine, H. T. 2012. A distance limited method for sampling downed coarse woody debris. In Prep.
downLogIZs
container class
1 | showClass("distanceLimitedIZ")
|
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