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Splicing Height Curves

Author(s) or contact(s): G.D. Nigh and K.R. Polsson
Source: Research Branch
Subject: Growth and Yield
Series: Extension Note
Other details:  Published 2002. Hardcopy is available.


A previous method for splicing juvenile height models with height-age models does not give satisfactory results for coastal Douglas-fir because the two curves have different shapes and are far apart at the splice point. Our new procedure forces the juvenile height curve to be the same as the height-age curve at the pre-determined splice point, and pseudo-data are used to make a smooth transition between the two curves.

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Updated April 19, 2007