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polcurve
2007 Feb 13
1
nls: "missing value or an infinity" (Error in numericDeriv) and "singular gradient matrix"Error in nlsModel
...problems here... But, of which nature? In the first instance I did try with some different starting values for the parameters, but without success.
If anyone could suggest a sensible way to proceed to solve these I would be really thankful!
Daniela
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Details on data and formulas:
> polcurve=read.table("polcurve.txt",header=TRUE)
> polcurve
dist fath
1 1 0.138908965
2 2 0.113768871
3 3 0.114361753
4 4 0.051065765
5 5 0.095787946
6 6 0.123601131
7 7 0.117340746
8 8 0.054049434
9 9 0.112000962
10 10 0.074843028
11 11 0.06473...