r drc封装中的相关系数

Question

i want to find the correlation of the adjuste of the curve plotted and the data, anyone knows how to do that?

library(drc)

S.alba.m1 <- drm(DryMatter~Dose, Herbicide, data = S.alba, fct = LL.4())
plot(S.alba.m1)

Answer 1

Use fitted :

cor(S.alba$DryMatter, fitted(S.alba.m1))

Also check out the modelFit function: ?modelFit for various tests.