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drc (version 1.3-0)

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

1.3-0

License

GNU GPL (version 2 or any later version)

Maintainer

Christian Ritz

Last Published

February 15th, 2017

Functions in drc (1.3-0)

TerMet

The effect of terbuthylazin on growth rate
spinach

Inhibition of photosynthesis
mdControl

Sets control arguments
richards

Richards model
diagnostics

Display information on estimation procedure
LL.3

The three-parameter log-logistic function
isobole

Creating isobolograms
print.summary.drc

Printing summary of non-linear model fits
update.drc

Updating and re-fitting a model
W1.4

The four-parameter Weibull functions
glymet

Glyphosate and metsulfuron-methyl tested on algae.
termec

Mechlorprop and terbythylazine tested on Lemna minor
ED

Estimating effective doses
LL.2

The two-parameter log-logistic function
TM

A suite of bioassays
PestSci

Inhibition of photosynthesis
baro5

The modified baro5 function
braincousens

The Brain-Cousens hormesis models
boxcox.drc

Transform-both-sides Box-Cox transformation
BC.5

The Brain-Cousens hormesis models
LL.5

The five-parameter log-logistic function
hormesis

Hormesis data set
cabanne

data name/kind
FA

Effect of Ferulic Acid on growth of ryegrass
mixdrc

Fitting multiple dose-response curves with random effects
cedergreen

The Cedergreen-Ritz-Streibig model
W1.2

The two-parameter Weibull functions
logLik.drc

Extracting the log likelihood
acidiq

Acifluorfen and diquat tested on Lemna minor.
compParm

Comparison of parameters
coef.drc

Extract Model Coefficients
drmc

Sets control arguments
searchdrc

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

The log-logistic function
weibull1

The Weibull functions
print.drc

Printing key features
finney71

Example from Finney (1971)
vcov.drc

Calculating Variance-Covariance Matrix for objects of class 'drc'
predict.drc

Prediction
daphnids

Daphnia test
LL.4

The four-parameter log-logistic function
drc-package

Modelling dose-response curves
S.alba

Potency of two herbicides
plotraw

Plotting raw dose response data.
multdrc

Fitting multiple dose-response curves
RScompetition

Competition between two biotypes
fitted.drc

Extract fitted values from model
ryegrass

Effect of ferulic acid on growth of ryegrass
confint.drc

Confidence Intervals for model parameters
deguelin

Deguelin applied to chrysanthemum aphis
CRS.5a

The Cedergreen-Ritz-Streibig model
earthworms

Earthworms
mixture

Fitting mixture models
plot.drc

Plotting fitted curves for a 'drc' object
CRS.4a

The Cedergreen-Ritz-Streibig model
auxins

Effect of technical grade and commerecially formulated auxin herbicides
boltzmann

The Boltzmann model
SI

Comparing selectivity indices across curves
MM

Michaelis-Menten model
residuals.drc

Extracting residuals from model
secalonic

Root length
mselect

Model selection
W1.3

The three-parameter Weibull functions
drm

Fitting dose-response models
summary.drc

Summarising non-linear model fits
MAX

Maximum mean response
colFct

Collapse of levels
leaflength

Leaf length of barley
PR

Expected response
rdrm

Simulating a dose-response curve
heartrate

Heart rate baroreflexes for rabbits
gompertzd

The derivative of the Gompertz function
expDecay

~~function to do ... ~~
isomerization

Reaction rate of the catalytic isomerization
anova.drc

ANOVA for non-linear model fits