COforest: Colorado Forest Data Set

Description

This data set contains 9167 records of different species of live trees for 345 sampled forested plots measured in 2015.

Usage

data("COforest")

Arguments

Format

A data frame with 9167 observations on the following 19 variables.

PLT_CN: Unique identifier of plot
STATECD: State code using Bureau of Census Federal Information Processing Standards (FIPS)
COUNTYCD: County code (FIPS)
ELEV_PUBLIC: Elevation (ft) extracted spatially using LON_PUBLIC/LAT_PUBLIC
LON_PUBLIC: Fuzzed longitude in decimal degrees using NAD83 datum
LAT_PUBLIC: Fuzzed latitude in decimal degrees using NAD83 datum
ASPECT: a numeric vector
SLOPE: a numeric vector
SUBP: Subplot number
TREE: Tree number within subplot
STATUSCD: Tree status (0:no status; 1:live tree; 2:dead tree; 3:removed)
SPCD: Species code
DIA: Current diameter (in)
HT: Total height (ft): estimated when broken or missing
ACTUALHT: Actual height (ft): measured standing or down
HTCD: Height method code (1:measured; 2:actual measured-length estimated; 3:actual and length estimated; 4:modeled
TREECLCD: Tree class code (2:growing-stock; 3:rough cull; 4:rotten cull)
CR: Compacted crown ratio (percentage)
CCLCD: Crown class (1:open grown; 2:domimant; 3:co-dominant; 4:intermediate; 5:overtopped)

References

X. Liao and M. Meyer (2019). Estimation and Inference in Mixed-Effect Regression Models using Shape Constraints, with Application to Tree Height Estimation. (to appear in Journal of the Royal Statistical Society. Series C: Applied Statistics)