ppine: Tree Growth Data for Ponderosa Pine
Description
A subset of tree growth observations from a Ponderosa pine growth database.
The ppine data frame has 166 rows and 8 columns.source
William R. Wykoff wwykoff@fs.fed.us Rocky Mountain Research Station, 1221 South Main Street, Moscow, ID 83843Details
The exogenous variables are elev, smi, dbh,
tht, cr, and ba; the endogenous variables
dg and hg. There are no lagged variables in the dataset
and the observations are for a single remeasurement.
The data was provided by the USDA Forest Service Intermountain
Research Station.