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drc (version 2.5-12)
Analysis of Dose-Response Curves
Description
Analysis of dose-response data is made available through a suite of flexible and versatile model fitting and after-fitting functions.
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Install
install.packages('drc')
Monthly Downloads
14,162
Version
2.5-12
License
GPL-2 | file LICENCE
Homepage
http://www.r-project.org
Maintainer
Christian Ritz
Last Published
April 14th, 2015
Functions in drc (2.5-12)
Search functions
W1.4
The four-parameter Weibull functions
W1.3
The three-parameter Weibull functions
coef.drc
Extract Model Coefficients
leaflength
Leaf length of barley
deguelin
Deguelin applied to chrysanthemum aphis
fplogistic
Fractional polynomial-logistic dose-response models
getInitial
Showing starting values used
cedergreen
The Cedergreen-Ritz-Streibig model
fitted.drc
Extract fitted values from model
ursa
Model function for the universal response surface approach (URSA) for the quantitative assessment of drug interaction
lepidium
Dose-response profile of degradation of agrochemical using lepidium
auxins
Effect of technical grade and commercially formulated auxin herbicides
algae
Volume of algae as function of increasing concentrations of a herbicide
glymet
Glyphosate and metsulfuron-methyl tested on algae.
lin.test
Lack-of-fit test for the mean structure based on cumulated residuals
llogistic
The log-logistic function
P.promelas
Effect of sodium pentachlorophenate on growth of fathead minnow
logLik.drc
Extracting the log likelihood
EDcomp
Comparing selectivity indices across curves
germination
Germination of three crops
W1.2
The two-parameter Weibull functions
nasturtium
Dose-response profile of degradation of agrochemical using nasturtium
spinach
Inhibition of photosynthesis
searchdrc
Searching through a range of initial parameter values to obtain convergence
H.virescens
Mortality of tobacco budworms
boxcox.drc
Transform-both-sides Box-Cox transformation
yieldLoss
Calculating yield loss parameters
daphnids
Daphnia test
LL.4
The four-parameter log-logistic function
gompertz
Mean function for the Gompertz dose-response or growth curve
NEC
Dose-response model for estimation of no effect concentration (NEC).
acidiq
Acifluorfen and diquat tested on Lemna minor.
comped
Comparison of effective dose values
ED.drc
Estimating effective doses
chickweed
Germination of common chickweed (
Stellaria media
)
gompertzd
The derivative of the Gompertz function
gaussian
Normal and log-normal biphasic dose-response models
print.drc
Printing key features
O.mykiss
Test data from a 21 day fish test
modelFit
Assessing the model fit
noEffect
Testing if there is a dose effect at all
bread.drc
Bread and meat for the sandwich
M.bahia
Effect of an effluent on the growth of mysid shrimp
drmc
Sets control arguments
summary.drc
Summarising non-linear model fits
weibull1
Weibull model functions
S.alba
Potency of two herbicides
anova.drc
ANOVA for dose-response model fits
compParm
Comparison of parameters
CRS.5a
Cedergreen-Ritz-Streibig dose-reponse model for describing hormesis
G.aparine
Herbicide applied to Galium aparine
logistic
The logistic model
LL.5
The five-parameter log-logistic function
EXD
Exponential decay model
lettuce
Hormesis in lettuce plants
finney71
Example from Finney (1971)
MM
Michaelis-Menten model
twophase
Two-phase dose-response model
backfit
Calculation of backfit values from a fitted dose-response model
vinclozolin
Vinclozolin from AR in vitro assay
baro5
The modified baro5 function
isobole
Creating isobolograms
etmotc
Effect of erythromycin on mixed sewage microorganisms
maED
Estimation of ED values using model-averaging
LL.3
The three-parameter log-logistic function
braincousens
The Brain-Cousens hormesis models
plot.drc
Plotting fitted dose-response curves
predict.drc
Prediction
secalonic
Root length measurements
earthworms
Earthworm toxicity test
mixture
Fitting binary mixture models
mselect
Dose-response model selection
selenium
Data from toxicology experiments with selenium
residuals.drc
Extracting residuals from the fitted dose-response model
gammadr
Gamma dose-response model
drm
Fitting dose-response models
BC.5
The Brain-Cousens hormesis models
AR
Asymptotic regression model
PR
Expected or predicted response
LL.2
The two-parameter log-logistic function
lnormal
Log-normal dose-response model
mr.test
Mizon-Richard test for dose-response models
mecter
Mechlorprop and terbythylazine tested on Lemna minor
print.summary.drc
Printing summary of non-linear model fits
neill.test
Neill's lack-of-fit test for dose-response models
CRS.4a
The Cedergreen-Ritz-Streibig model
diagnostics
Information on estimation
terbuthylazin
The effect of terbuthylazin on growth rate
MAX
Maximum mean response
RScompetition
Competition between two biotypes
confint.drc
Confidence Intervals for model parameters
S.capricornutum
Effect of cadmium on growth of green alga
heartrate
Heart rate baroreflexes for rabbits
getMeanFunctions
Display available dose-response models
methionine
Weight gain for different methionine sources
multi2
Multistage dose-response model with quadratic terms
ryegrass
Effect of ferulic acid on growth of ryegrass
hatvalues.drc
Model diagnostics for nonlinear dose-response models
update.drc
Updating and re-fitting a model
rdrm
Simulating a dose-response curve
vcov.drc
Calculating variance-covariance matrix for objects of class 'drc'
simDR
Simulating ED values under various scenarios