help for nls
Dear Cyrille, type "?nls" in the R command line. This will show you how to use the nls function. And please read the "posting guide" (see bootom of each message). This will help you to get more helpful answers. Best wishes, Arne
On Monday 15 November 2004 14:42, BARNERIAS Cyrille wrote:
Hello, I am beginning with R and I would like to test a non linear model. But I do not find exactly wath I am looking for in nls packages (or I do not know where to search). I would like to try a model like this : y=b * x exp(n)/(a exp(n) + x exp (n)) Where a = a0 + a1z b= b0 + b1z x and z are variables y the variable that I am trying to modelise a0, a1, b0 and b1 are parameters to determine. I am wondering if I can use nls and if so how do I have to write my command ? Thanks in advance for your help. Cyrille Barn??rias Adjoint au chef d'??chelon interr??gional de Caen Inventaire forestier national 73 rue Marie Curie 14 200 H??rouville Saint-Clair France Tel : 02.31.47.71.53
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 ahenningsen at agric-econ.uni-kiel.de http://www.uni-kiel.de/agrarpol/ahenningsen/