drc (version 1.2-0)

onecurve: Root length

Description

Data are from an experiment assessing the inhibitory effect effect of secalonic acids on plant growth.

Usage

data(onecurve)

source

The dataset is analysed in Gong et al (2004).

Details

The root lengths are each averages of three measured root lengths.

References

Gong, X. and Zeng, R. and Luo, S. and Yong, C. and Zheng, Q. (2004) Two new secalonic acids from Aspergillus Japonicus and their allelopathic effects on higher plants, Proceedings of International Symposium on Allelopathy Research and Application, 27-29 April, Shanshui, Guangdong, China (Editors: R. Zeng and S. Luo), 209--217.

Examples

## Fitting a 4-parameter log-logistic model
model.onecurve <- multdrc(Root~Dose, data=onecurve)

## Fitting a 3-parameter log-logistic model
##  lower limit fixed at 0
model.onecurve.noC <- multdrc(Root~Dose, data=onecurve, fct=l3())


rm(model.onecurve, model.onecurve.noC)