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