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botanisches
2012 Dec 14
1
Define a custom-built loss function and combine it with nls()
...(sum of squared residuals):
nlmodel<-nls(y~a*x^b,data=d,start=list(a=1,b=0.1),trace=T)
Many thanks!!!
Christiana
--
Christiana Anagnostou
*****************************************
Department of Evolutionary Ecology and Genetics
Zoological Institute
Christian-Albrechts-University of Kiel
Am Botanischen Garten 9
24118 Kiel
Germany
Tel: +49-431-8804145 (work)
Tel: +49-431-5709649 (home)
Fax: +49-431-8802403
Email: canagnostou@zoologie.uni-kiel.de
Web: www.uni-kiel.de/zoologie/evoecogen/
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