set.variant {rconifers}R Documentation

Set the CONIFERS growth model variant

Description

Assigns the variant for the CONIFERS forest growth model.

Usage

set.variant( var=0 )

Arguments

var is the CONIFERS variant. The only possible values for the current at the current time are 0 (SWO_CONIFERS) and 1 (SMC_CONIFERS).

Details

The set.variant function only accepts an argument of zero (0) or one (1). The default variant is the (SWO\_CONIFERS) variant. This function returns a value of 0, 1 or an error message.

Value

none.

Author(s)

Jeff D. Hamann jeff.hamann@forestinformatics.com,
Martin W. Ritchie mritchie@fs.fed.us

References

Ritchie, M. and J. Hamann. 2006. Modeling dynamics of competing vegetation in young conifer plantations of northern California and southern Oregon, USA. Canadian Journal of Forest Research 36(10): 2523-2532.

Ritchie, M. and J. Hamann. 2008. Individual-tree height-, diameter- and crown-width increment equations for young Douglas-fir plantations. New Forests 35(2):173-186.

Ritchie, M.W. 2008. User's Guide and Help System for CONIFERS: A Simulator for Young Conifer Plantations Version 4.10. See http://www.fs.fed.us/psw/programs/ecology_of_western_forests/projects/conifers/

Vaughn, Nicholas. 2007. An individual-tree model to predict the annual growth of young stands of Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) in the Pacific northwest. M.S. Thesis, University of Washington. 91p.

See Also

rconifers, smc, swo

Examples

library( rconifers )

## set the variant to the SWO variant
set.variant( 0 )
## set the variant to the SMC variant
set.variant( 1 )


[Package rconifers version 1.0.0 Index]