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nfit
2008 Aug 29
1
nls() fails on a simple exponential fit, when lm() gets it right?
...ents[2]
cat("Best logarithmic fit is (",ytxt,")=(aaa*log(",xtxt,")+bbb) with
parameters aaa=",bfaaa,"and bbb=",bfbbb,"\n")
#Produces: Best logarithmic fit is ( Height in m )=(aaa*log( DBH in mm
)+bbb) with parameters aaa= 7.551666 and bbb= 4.594367
lnfit=lm(height~log(dbh)) #This is doing the ln fit without a self-start
function
cat("Done another, simpler, way, the best logarithmic fit has parameters:
aaa=",lnfit$coefficients[2],"and bbb=",lnfit$coefficients[1],"\n")
#Produces: Done another, simpler, way, the best loga...