[R] Confidence intervals nls

Dear All I am quite new to R and would appreciate some help fitting 95% confidence intervals to a nls function. I have the data DOY CET 90 5.9 91 8 92 8.4 93 7.7 95 6.6 96 6.8 97 7.1 98 9.7 99 12.3 100 12.8 102 11 103 9.3 104 9.8

Re: [R] Confidence intervals nls

Dear Peter Thank you that is an error in the code but unfortunately the problem is still apparent. I think it is related to calculating the gradient Tom -- View this message in context: http://n4.nabble.com/Confidence-intervals-nls-tp1556487p1556585.html Sent from the R help mailing list arch

[R] Survival analysis

Dear all I have a dataset examining the probability of a population surviving (calculated from a logistic regression) of a species over a 200yr period. The predictor variables are either continuous but non-normal (e.g. temperature, oxygen) or categorical (e.g. channelisation), unfortunately I also

Re: [R] Survival analysis

We are looking the extinction of a species of freshwater fish. The logistic regression was derived by scoring the anecdotal descriptions of the species' former population size (1 for a positive description of the population e.g. abundant, and 0 for a negative description e.g. scarce) and plotting