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2003 Oct 22
2
non linear regression with R
...a function which look like this: p(a,b,x,y)=b/(2*pi*a?gamma(2/b))*exp(-(square_root(x?+y?)/a)power(b)) I am looking for a and b values that fit my data at best. Can someone give me hints to perform such an analysis with R ? Thanks a lot Sophie Sophie Gerber gerber at pierroton.inra.fr INRA - UMR BIOGECO 69 route d'Arcachon tel (33) (0)5 57 12 28 30 33612 Cestas cedex fax (33) (0)5 57 12 28 81 http://www.pierroton.inra.fr/genetics/Perso/Sophie/ page_sophie_english.html