Displaying 2 results from an estimated 2 matches for "pestsci".
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pesti
2007 Mar 20
1
Error in nlme with factors in R 2.4.1
Hi,
the following R lines work fine in R 2.4.0, but not in R 2.4.1 or any devel versions of R
2.5.0 (see below for details).
library(drc) # to load the dataset 'PestSci'
library(nlme)
## Setting starting values
sv <- c(0.43355869, 2.49963220, 0.05861799, 1.73290589, 0.38153146, 0.24316978)
## No error
m1 <-
nlme(SLOPE ~ c + (d-c)/(1+exp(b*(log(DOSE)-log(e)))),
fixed = list(b+c+d+e~1),
random = d~1|CURVE,
start = sv[c(2:5)], data = PestSci)
## No e...
2006 Sep 25
1
nlme with a factor in R 2.4.0beta
Hi,
the following R lines work fine in R 2.4.0 alpha (and older R versions), but not in R
2.4.0 beta (details below):
library(drc) # to load the dataset 'PestSci'
library(nlme)
## Starting values
sv <- c(0.328919, 1.956121, 0.097547, 1.642436, 0.208924)
## No error
m1 <- nlme(SLOPE ~ c + (d-c)/(1+exp(b*(log(DOSE)-log(e)))),
fixed = list(b+c+d+e~1),
random = d~1|CURVE,...