convert.ba.mult {CTFS}R Documentation

Compute Basal Area for All Stems of an Individual Tree using Census Dataset and Multi-Stem Dataset

Description

Computes the total basal area of an individual tagged tree by matching tree tag numbers of census dataset to multi-stem dataset. The basal area of each stem is computed from its dbh and summed together to provide a single basal area for each tagged tree. This function is usually called by other basal area functions, but can be called from the command line.

Usage

convert.ba.mult(census, mult, mindbh = 10)

Arguments

census name of census datafile for first census, must be a dataframe
mult name of file (not in quotes) must be a dataframe with trees as rows and column as DBH. Must be of the same census year as census1. Tree tag numbers can be repeated up to the number of valid stems for measuement.
mindbh Minimum DBH for computing population size in each census.

Details

See CTFS.basalarea for details on the computation methods of basal area and associated functions.

When convert.ba.mult is called from another function, the parameter mindbh should be explicitly passed to assure proper behavior. Its use is determined by the function it is called from.

Value

convert.ba.mult returns a dataframe with the following components:

tag tag number of tree
ba sum total basal area (m^2) of all multiple stems of tree


Rownames of returned dataframe are the tree tag number. Not all tree tag will be in the dataframe. Only those with at least 1 multiple stem.

Author(s)

Rick Condit, Suzanne Lao, Pamela Hall

See Also

CTFS.basalarea

Examples

## Not run: 
1.  Default use of convert.ba.mult
ba.conv.out <- convert.ba.mult(tst.bci90.mult,mindbh=10)

2.  Set mindbh >= 100 mm (10 cm dbh)
ba100.conv.out <- convert.ba.mult(tst.bci90.mult,mindbh=100)

## End(Not run)

[Package CTFS version 1.00 Index]