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drc (version 1.2-0)

Analysis of dose-response curves

Description

Analysis of one or multiple curves with focus on concentration-response, dose-response and time-response curves used, for example, in biology, environmental sciences, medicine, pharmacology, toxicology.

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Version

Install

install.packages('drc')

Monthly Downloads

28,339

Version

1.2-0

License

GNU GPL (version 2 or any later version)

Maintainer

Christian Ritz

Last Published

February 15th, 2017

Functions in drc (1.2-0)

finney71

Example from Finney (1971)
MM

Michaelis-Menten model
fitted.drc

Extract fitted values from model
acidiq

Acifluorfen and diquat tested on Lemna minor.
confint.drc

Confidence Intervals for model parameters
BC.5

The Brain-Cousens hormesis models
FA

Effect of Ferulic Acid on growth of ryegrass
earthworms

Earthworms
ryegrass

Effect of ferulic acid on growth of ryegrass
cabanne

data name/kind
isobole

Creating isobolograms
onecurve

Root length
christensenetal2003

Potency of two herbicides
summary.drc

Summarising non-linear model fits
SI

Comparing selectivity indices across curves
braincousens

The Brain-Cousens hormesis models
predict.drc

Prediction
spinach

Inhibition of photosynthesis
TerMet

The effect of terbuthylazin on growth rate
multdrc

Fitting multiple dose-response curves
W1.3

The three-parameter Weibull functions
weibull1

The Weibull functions
llogistic

The log-logistic function
TM

A suite of bioassays
drmc

Sets control arguments
CRS.5a

The Cedergreen-Ritz-Streibig model
gompertzd

The derivative of the Gompertz function
PestSci

Inhibition of photosynthesis
leaflength

Leaf length of barley
mdControl

Sets control arguments
mselect

Model selection
print.summary.drc

Printing summary of non-linear model fits
CRS.4a

The Cedergreen-Ritz-Streibig model
logLik.drc

Extracting the log likelihood
isomerization

Reaction rate of the catalytic isomerization
boltzmann

The Boltzmann model
diagnostics

Display information on estimation procedure
hormesis

Hormesis data set
colFct

Collapse of levels
plotraw

Plotting raw dose response data.
RScompetition

Competition between two biotypes
plot.drc

Plotting fitted curves for a drc object
W1.4

The four-parameter Weibull functions
print.drc

Printing key features
LL.3

The three-parameter log-logistic function
LL.4

The four-parameter log-logistic function
vcov.drc

Calculating Variance-Covariance Matrix for objects of class 'drc'
twofactors

Dose-response curves for multiple factors
anova.drc

ANOVA for non-linear model fits
MAX

Maximum mean response
drm

Fitting dose-response models
coef.drc

Extract Model Coefficients
mixdrc

Fitting multiple dose-response curves with random effects
richards

Richards model
residuals.drc

Extracting residuals from model
termec

Mechlorprop and terbythylazine tested on Lemna minor
LL.5

The five-parameter log-logistic function
cedergreen

The Cedergreen-Ritz-Streibig model
baro5

The modified baro5 function
PR

Expected response
drc-package

Modelling dose-response curves
update.drc

Updating and re-fitting a model
ED

Estimating effective doses
expDecay

~~function to do ... ~~
searchdrc

Searching through a range of initial parameter values to obtain convergence
heartrate

Heart rate baroreflexes for rabbits
compParm

Comparison of parameters
LL.2

The two-parameter log-logistic function
mixture

Fitting mixture models
W1.2

The two-parameter Weibull functions
glymet

Glyphosate and metsulfuron-methyl tested on algae.
daphnids

Daphnia test