set.variant {rconifers} | R Documentation |
Assigns the variant for the CONIFERS forest growth model.
set.variant( var=0 )
var |
is the CONIFERS variant. The only possible
values for the current at the current time are 0
(SWO_CONIFERS ) and 1 (SMC_CONIFERS ). |
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.
none.
Jeff D. Hamann jeff.hamann@forestinformatics.com,
Martin W. Ritchie mritchie@fs.fed.us
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.
library( rconifers ) ## set the variant to the SWO variant set.variant( 0 ) ## set the variant to the SMC variant set.variant( 1 )