Nothing
#---------------------------------------------------------------------------
#
# This generic will simply return the ID associated with the class of object
# as determined in the signature "object"
#
# Current methods include...
# 1. "standingTree" objects
# 2. "downLog" objects
# 3. "standingTrees" objects
# 4. "downLogs" objects
#
# We could add others in the future, in which case if there are multiple spatial
# objects, the IDS could be returned in a data frame. We could add an "all"
# argument to the methods to select more than the base ID desired.
#
# Note that standingTrees have both spTree and spDBH objects, right now, this
# generic only returns the spTree ID. The spDBH ID is the same, but with "dbh."
# prepended to it.
#
#
#Author... Date: 11-Apr-2013
# Jeffrey H. Gove
# USDA Forest Service
# Northern Research Station
# 271 Mast Road
# Durham, NH 03824
# jhgove@unh.edu
# phone: 603-868-7667 fax: 603-868-7604
#---------------------------------------------------------------------------
# generic definition...
#
if(!isGeneric("getID"))
setGeneric('getID',
function(object, ...) standardGeneric('getID'),
signature = c('object')
)
#================================================================================
# 1. for "standingTree" class objects...
#
setMethod('getID',
signature(object = 'standingTree'),
function(object,
...
)
{
#------------------------------------------------------------------------------
#
spID = slot( slot(object@spTree,"polygons")[[1]], "ID")
return(spID)
} #standingTree
) #setMethod
#================================================================================
# 2. for "downLog" class objects...
#
setMethod('getID',
signature(object = 'downLog'),
function(object,
...
)
{
#------------------------------------------------------------------------------
#
spID = slot( slot(object@spLog,"polygons")[[1]], "ID")
return(spID)
} #downLog
) #setMethod
#================================================================================
# 3. for "standingTrees" class objects...
#
setMethod('getID',
signature(object = 'standingTrees'),
function(object,
...
)
{
#------------------------------------------------------------------------------
#
spIDs = sapply(object@trees, getID)
return(spIDs)
} #standingTrees
) #setMethod
#================================================================================
# 4. for "downLogs" class objects...
#
setMethod('getID',
signature(object = 'downLogs'),
function(object,
...
)
{
#------------------------------------------------------------------------------
#
spIDs = sapply(object@logs, getID)
return(spIDs)
} #downLogs
) #setMethod
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