heightSmry_byC: Summarize mean and lorry's height by cluster-VRI specific
In bcgov/BCForestGroundSample: BC forest ground sample compilation

Description Usage Arguments Value Author(s)

Summarizes mean and lorry's height by cluster for standing trees, standing + live trees, and standing + live + non-broken top trees. The function is improved version to calculate mean height in vol_ha_2017.sas by outputing lorey's height. For both fixed and variable area plots, the function computes mean height by using plot weight (PLOT_WT) weighted height. For lorey's height computation, the function treats variable and fixed area plots differently. Specifically, the function uses the mean height as lorey's height for variable plots, while uses height that weighted both by plot weight (PLOT_WT) and basal area (BA_TREE) for fixed area plots.

heightSmry_byC(treeMC)

## S4 method for signature 'data.table'
heightSmry_byC(treeMC)

treeMC

data.table, Compiled tree-level data that contains both measured trees and counted trees.

A table contains computed mean height MN or MEAN and lorey's height LRY for all standing trees ALL, standing and live trees 1 and standing and non-broken top trees 2. The output is equevalent to height table in original compiler.

Yong Luo

bcgov/BCForestGroundSample documentation built on May 25, 2019, 3:21 p.m.