sumTreeDBHDist: sumTreeDBHDist: calculates DBH distribution of trees

In KateMMiller/forestMIDNarch: Package for importing, joining and querying MS Access based MIDN forest database tables.

Description

This function calculates DBH distribution by 10cm size classes. Must run importData first.

Usage

sumTreeDBHDist(
  status = c("all", "live", "dead"),
  speciesType = c("all", "native", "exotic"),
  units = c("density", "ba"),
  park = "all",
  from = 2007,
  to = 2018,
  QAQC = FALSE,
  locType = "VS",
  panels = 1:4,
  dist_m = NA,
  output,
  ...
)

Arguments

status	Filter by live, dead, or all. Acceptable options are: "all" Includes all standing trees "live" live trees only "dead" dead trees only
speciesType	Allows you to filter on native, exotic or include all species. "all" Default. Returns all species. "native" Returns native species only "exotic" Returns exotic species only
units	Allows you to choose which metric to calculate: basal area or stem density "density" Default. Returns stems/ha "ba" Returns basal area in sq.m/ha
dist_m	Filter trees by a distance that is less than or equal to the specified distance in meters of the tree to the center of the plot. If no distance is specified, then all trees will be selected. For example, to select an area of trees that is 100 square meters in area, use a distance of 5.64m.

Value

returns a dataframe with one row for each plot and either density or BA

Examples

importData()
tree_diam_dist <-sumTreeDBHDist(park = 'RICH', speciesType = 'native', from = 2015, to = 2018, units = 'ba')
head(tree_diam_dist)

KateMMiller/forestMIDNarch documentation built on April 9, 2021, 3:50 p.m.