gr.raw {CTFS}R Documentation

Unadjusted, Untrimmed Annual DBH Increment for Individual Trees

Description

Computes the annual dbh increment for each tree and compares it to an expected range of values based on the function trim.growth. The range of values is set so high and low as to include all possible growth rates (or so it is believed). This function is intended for use by biomass but can be used by itself if unadjusted, raw DBH increments for individuals trees is desired.

Usage

gr.raw(census1, census2, rounddown = FALSE)

Arguments

census1 name of census datafile for first census, must be a dataframe, must be of same length as census2
census2 name of census datafile for second census, must be a dataframe, must be of same length as census1
rounddown logical value in caps. When TRUE, if either of census is < 55, then the floor of the dbh value / 5 is provided. When FALSE, no change in the dbh is made.

Details

See CTFS.growth for details on the computation methods of growth rates and associated functions.

Any two censuses on a datafile must be used. They do not have to be sequential, only that census1 has to be before census2.

The results of gr.raw are annual DBH increments for individual trees, NOT MEAN GROWTH VALUES. A value is returned for each tree. No invalid values should result but this means that no reasonable trimming of growth rates has been done.

Value

gr.raw returns a vector of annual dbh increments. It is not intended for use outside of biomass but it will function on its own.
If you want the annual dbh increments for individual trees with the full compliment of computed values, use growth.indiv.

Author(s)

Pamela Hall

See Also

growth.indiv, biomass, CTFS.growth

Examples

## Not run: 

gr.raw.out <- gr.raw(tst.bci90.full,tst.bci95.full)

## End(Not run)

[Package CTFS version 1.00 Index]