The modified baro5 function
Mean function for the Gompertz dose-response or growth curve
The three-parameter Weibull functions
Sets control arguments
Vinclozolin from AR in vitro assay
The log-logistic function
Earthworm toxicity test
Expected or predicted response
The derivative of the Gompertz function
Heart rate baroreflexes for rabbits
Mechlorprop and terbythylazine tested on Lemna minor
Effect of erythromycin on mixed sewage microorganisms
Herbicide applied to Galium aparine
Dose-response profile of degradation of agrochemical using nasturtium
The four-parameter Weibull functions
Display available dose-response models
Fitting mixture models
Dose-response model for estimation of no effect concentration (NEC).
Asymptotic regression model
Mortality of tobacco budworms
Effect of technical grade and commercially formulated auxin herbicides
Example from Finney (1971)
Bread and meat for the sandwich
Comparison of effective dose values
Simulating a dose-response curve
Fractional polynomial-logistic dose-response models
Example of plant growth curve from Covarelli and Onofri (1998)
Comparison of parameters
Log-normal dose-response model
Checking the model fot
Calculating yield loss parameters
Effect of ferulic acid on growth of ryegrass
The four-parameter log-logistic function
Information on estimation
Extracting residuals from model
The effect of terbuthylazin on growth rate
Neill's lack-of-fit test for dose-response models
Two-phase dose-response model
The two-parameter Weibull functions
Gompertz growth models
Fitting dose-response models
Exponential decay model
Dose-response profile of degradation of agrochemical using lepidium
Estimation of ED values using model-averaging
Model-robust dose-response modelling
Weight gain for different methionine sources
Mizon-Richard test for dose-response models
Isobutylalcohol in nutrient solution in which lettuce plants were grown
Estimating effective doses
Cedergreen-Ritz-Streibig dose-reponse model for describing hormesis
The five-parameter log-logistic function
Leaf length of barley
Effect of cadmium on growth of green alga
The two-parameter log-logistic function
Effect of sodium pentachlorophenate on growth of fathead minnow
Showing starting values used
The logistic model
Extract fitted values from model
Updating and re-fitting a model
Michaelis-Menten model
The three-parameter log-logistic function
Maximum mean response
The Brain-Cousens hormesis models
Transform-both-sides Box-Cox transformation
Effect of an effluent on the growth of mysid shrimp
Calculating variance-covariance matrix for objects of class 'drc'
Prediction
Searching through a range of initial parameter values to obtain convergence
Glyphosate and metsulfuron-methyl tested on algae.
Root length measurements
Plotting fitted curves for a 'drc' or 'mrdrc' object
Weibull model functions
Inhibition of photosynthesis
Potency of two herbicides
Model function for the universal response surface approach (URSA) for the quantitative assessment of drug interaction
The Brain-Cousens hormesis models
Competition between two biotypes
Test data from a 21 day fish test
Volume of algae as function of increasing concentrations of a herbicide
Acifluorfen and diquat tested on Lemna minor.
The Cedergreen-Ritz-Streibig model
Deguelin applied to chrysanthemum aphis
Confidence Intervals for model parameters
Extracting the log likelihood
Lack-of-fit test for the mean structure based on cumulated residuals
Printing summary of non-linear model fits
Printing key features
Daphnia test
Creating isobolograms
The Cedergreen-Ritz-Streibig model
Summarising non-linear model fits
Simulating ED values under various scenarios
Model selection
ANOVA for dose-response model fits
Comparing selectivity indices across curves
Extract Model Coefficients