Description Objects from the Class Slots Extends Methods Author(s) References See Also Examples
This class holds the inclusion zone definition for the ‘sausage’ method (Gove and Van Deusen, 2011) for sampling down coarse woody debris.
Objects can be created by calls of the
form new("sausageIZ", ...)
. However, this is not recommended
because the objects are fairly complex. Instead, one can use the object
constructor sausageIZ
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.
sausage
:Object of class "matrix"
: A matrix
representation of the sausage inclusion zone in homogeneous
coordinates. This can be manipulated and plotted as desired for
easy access to the inclusion zone where needed.
radius
:Object of class "numeric"
: The radius
for the fixed-area plot that determines the sausage inclusion zone
area. This will be in units of feet for "English" or meters for
"metric."
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.
pgSausageArea
:Object of class "numeric"
: This
is the area of the sausage 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.
Class "downLogIZ"
, directly.
Class "InclusionZone"
, by class "downLogIZ", distance 2.
signature(izObject = "sausageIZ", tract =
"Tract")
: “InclusionZoneGrid” generic constructor
signature(object = "sausageIZ")
: Return the
object perimeter
signature(x = "sausageIZ", y = "missing")
: Plot
the object
signature(object = "sausageIZ")
: Object summary
Jeffrey H. Gove
Gove, J. H. and Van Deusen, P. C. 2011. On fixed-area plot sampling for
downed coarse woody debris. Forestry. Forestry 84:109–117.
standUpIZ
, chainSawIZ
, fullChainSawIZ
and
the downLogIZs
container class.
1 | showClass("sausageIZ")
|
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