Comparing selectivity indices across curves
Weight gain for different methionine sources
Log-normal dose-response model
Herbicide applied to Galium aparine
Expected or predicted response
The two-parameter log-logistic function
Asymptotic regression model
Deguelin applied to chrysanthemum aphis
Sets control arguments
Fitting dose-response models
The Cedergreen-Ritz-Streibig model
The derivative of the Gompertz function
Bread and meat for the sandwich
Prediction
Effect of sodium pentachlorophenate on growth of fathead minnow
Earthworm toxicity test
Mechlorprop and terbythylazine tested on Lemna minor
The three-parameter Weibull functions
Extracting the log likelihood
Weibull model functions
Vinclozolin from AR in vitro assay
Inhibition of photosynthesis
Effect of ferulic acid on growth of ryegrass
Potency of two herbicides
Maximum mean response
Transform-both-sides Box-Cox transformation
Isobutylalcohol in nutrient solution in which lettuce plants were grown
Fitting multiple dose-response curves with random effects
The logistic model
Printing key features
Calculating yield loss parameters
The Brain-Cousens hormesis models
Leaf length of barley
The four-parameter Weibull functions
The modified baro5 function
Competition between two biotypes
Heart rate baroreflexes for rabbits
Creating isobolograms
Printing summary of non-linear model fits
Fitting mixture models
The Cedergreen-Ritz-Streibig model
Root length
Simulating ED values under various scenarios
Example from Finney (1971)
Calculating variance-covariance matrix for objects of class 'drc'
Updating and re-fitting a model
The Cedergreen-Ritz-Streibig model
The five-parameter log-logistic function
ANOVA for non-linear model fits
Test data from a 21 day fish test
Display available dose-response models
Extract Model Coefficients
Daphnia test
Extracting residuals from model
Checking the model fot
Comparison of effective dose values
Exponential decay model
The four-parameter log-logistic function
Mortality of tobacco budworms
Michaelis-Menten model
Effect of cadmium on growth of green alga
Effect of technical grade and commercially formulated auxin herbicides
Acifluorfen and diquat tested on Lemna minor.
Volume of algae as function of increasing concentrations of a herbicide
The two-parameter Weibull functions
Example of plant growth curve from Covarelli and Onofri (1998)
The Brain-Cousens hormesis models
Comparison of parameters
Extract fitted values from model
Information on estimation
Confidence Intervals for model parameters
Gompertz growth models
Dose-response profile of degradation of agrochemical using nasturtium
Simulating a dose-response curve
Model-robust dose-response modelling
Summarising non-linear model fits
The effect of terbuthylazin on growth rate
Estimating effective doses
The log-logistic function
Dose-response profile of degradation of agrochemical using lepidium
Model selection
Glyphosate and metsulfuron-methyl tested on algae.
Searching through a range of initial parameter values to obtain convergence
Effect of an effluent on the growth of mysid shrimp
Mean function for the Gompertz dose-response or growth curve
Plotting fitted curves for a 'drc' or 'mrdrc' object
The three-parameter log-logistic function