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drc (version 1.1-0)

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

30,804

Version

1.1-0

License

GNU GPL (version 2 or any later version)

Maintainer

Christian Ritz

Last Published

February 15th, 2017

Functions in drc (1.1-0)

hormesis

Hormesis data set
llogistic

The log-logistic function
CRS.4a

The Cedergreen-Ritz-Streibig model
drmc

Sets control arguments
drc-package

Modelling dose-response curves
LL.4

The four-parameter log-logistic function
W1.2

The two-parameter Weibull functions
heartrate

Heart rate baroreflexes for rabbits
multdrc

Fitting multiple dose-response curves
colFct

Collapse of levels
confint.drc

Confidence Intervals for model parameters
glymet

Glyphosate and metsulfuron-methyl tested on algae.
update.drc

Updating and re-fitting a model
LL.5

The five-parameter log-logistic function
fitted.drc

Extract fitted values from model
finney71

Example from Finney (1971)
LL.2

The two-parameter log-logistic function
FA

Effect of Ferulic Acid on growth of ryegrass
boltzmann

The Boltzmann model
predict.drc

Prediction
TerMet

The effect of terbuthylazin on growth rate
mixture

Fitting mixture models
anova.drc

ANOVA for non-linear model fits
mdControl

Sets control arguments
drm

Fitting dose-response models
onecurve

Root length
expDecay

~~function to do ... ~~
coef.drc

Extract Model Coefficients
earthworms

Earthworms
termec

Mechlorprop and terbythylazine tested on Lemna minor
mselect

Model selection
print.drc

Printing key features
ED

Estimating effective doses
summary.drc

Summarising non-linear model fits
braincousens

The Brain-Cousens hormesis models
cedergreen

The Cedergreen-Ritz-Streibig model
BC.5

The Brain-Cousens hormesis models
SI

Comparing selectivity indices across curves
PestSci

Inhibition of photosynthesis
compParm

Comparison of parameters
daphnids

Daphnia test
PR

Expected response
CRS.5a

The Cedergreen-Ritz-Streibig model
cabanne

data name/kind
LL.3

The three-parameter log-logistic function
residuals.drc

Extracting residuals from model
leaflength

Leaf length of barley
plot.drc

Plotting fitted curves for a drc object
logLik.drc

Extracting the log likelihood
plotraw

Plotting raw dose response data.
weibull1

The Weibull functions
richards

Richards model
MAX

Maximum mean response
baro5

The modified baro5 function
vcov.drc

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

A suite of bioassays
ryegrass

Effect of ferulic acid on growth of ryegrass
diagnostics

Display information on estimation procedure
RScompetition

Competition between two biotypes
searchdrc

Searching through a range of initial parameter values to obtain convergence
W1.3

The three-parameter Weibull functions
acidiq

Acifluorfen and diquat tested on Lemna minor.
christensenetal2003

Potency of two herbicides
isomerization

Reaction rate of the catalytic isomerization
isobole

Creating isobolograms
twofactors

Dose-response curves for multiple factors
W1.4

The four-parameter Weibull functions
print.summary.drc

Printing summary of non-linear model fits
MM

Michaelis-Menten model
spinach

Inhibition of photosynthesis
mixdrc

Fitting multiple dose-response curves with random effects