cabanne {drc} | R Documentation |
Small plants, growing in pots in a green house, were sprayed with techincal grade phenmidipham herbicide either alone or in mixture with an ester of oleic acid. The plants were allowed to grow in the green house 14 days after treatment; then the dry matter was measured per pot.
data(cabanne)
A data frame with 240 observations on the following 3 variables.
dose
drymat
curve
If necessary, more details than the description above
Cabanne, F, Gaudry,JC & Streibig, JC (1999) Influence of alkyl oleates on efficacy of phenmedipham applied as an acetone:water solution on Galium aparine. Weed Research 39: 57-67.
possibly secondary sources and usages
model1 <- multdrc(drymat~dose, curve, data=cabanne) plot(fitted(model1), residuals(model1)) ## Fitting one curve with variance as a power of the mean model2 <- multdrc(drymat~dose, data=cabanne[c(1:40,141:240),], varPower=TRUE) rm(model1, model2)