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drc (version 2.3-96)
Analysis of dose-response curve data
Description
Analysis of dose-response curves in biology, environmental sciences, medicine, pharmacology, toxicology
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Install
install.packages('drc')
Monthly Downloads
12,425
Version
2.3-96
License
GPL-2 | file LICENCE
Homepage
http://www.r-project.org
Maintainer
Christian Ritz
Last Published
November 29th, 2013
Functions in drc (2.3-96)
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chickweed
Germination of common chickweed (
Stellaria media
)
CRS.5a
Cedergreen-Ritz-Streibig dose-reponse model for describing hormesis
EXD
Exponential decay model
LL.2
The two-parameter log-logistic function
G.aparine
Herbicide applied to Galium aparine
M.bahia
Effect of an effluent on the growth of mysid shrimp
P.promelas
Effect of sodium pentachlorophenate on growth of fathead minnow
anova.drc
ANOVA for dose-response model fits
acidiq
Acifluorfen and diquat tested on Lemna minor.
gaussian
Normal and log-normal biphasic dose-response models
logistic
The logistic model
RScompetition
Competition between two biotypes
S.alba
Potency of two herbicides
lepidium
Dose-response profile of degradation of agrochemical using lepidium
CRS.4a
The Cedergreen-Ritz-Streibig model
gompertz
Mean function for the Gompertz dose-response or growth curve
mecter
Mechlorprop and terbythylazine tested on Lemna minor
maED
Estimation of ED values using model-averaging
isobole
Creating isobolograms
algae
Volume of algae as function of increasing concentrations of a herbicide
ryegrass
Effect of ferulic acid on growth of ryegrass
llogistic
The log-logistic function
lnormal
Log-normal dose-response model
spinach
Inhibition of photosynthesis
methionine
Weight gain for different methionine sources
LL.4
The four-parameter log-logistic function
BC.5
The Brain-Cousens hormesis models
backfit
Calculation of backfit values from a fitted dose-response model
daphnids
Daphnia test
AR
Asymptotic regression model
H.virescens
Mortality of tobacco budworms
LL.5
The five-parameter log-logistic function
NEC
Dose-response model for estimation of no effect concentration (NEC).
diagnostics
Information on estimation
getInitial
Showing starting values used
PR
Expected or predicted response
MAX
Maximum mean response
coef.drc
Extract Model Coefficients
W1.4
The four-parameter Weibull functions
mr.test
Mizon-Richard test for dose-response models
W1.2
The two-parameter Weibull functions
S.capricornutum
Effect of cadmium on growth of green alga
etmotc
Effect of erythromycin on mixed sewage microorganisms
earthworms
Earthworm toxicity test
boxcox.drc
Transform-both-sides Box-Cox transformation
braincousens
The Brain-Cousens hormesis models
heartrate
Heart rate baroreflexes for rabbits
SI
Comparing selectivity indices across curves
baro5
The modified baro5 function
compParm
Comparison of parameters
logLik.drc
Extracting the log likelihood
deguelin
Deguelin applied to chrysanthemum aphis
drmc
Sets control arguments
print.summary.drc
Printing summary of non-linear model fits
lin.test
Lack-of-fit test for the mean structure based on cumulated residuals
fitted.drc
Extract fitted values from model
mselect
Dose-response model selection
confint.drc
Confidence Intervals for model parameters
gompertzd
The derivative of the Gompertz function
mixture
Fitting binary mixture models
neill.test
Neill's lack-of-fit test for dose-response models
twophase
Two-phase dose-response model
weibull1
Weibull model functions
lettuce
Hormesis in lettuce plants
ursa
Model function for the universal response surface approach (URSA) for the quantitative assessment of drug interaction
predict.drc
Prediction
modelFit
Assessing the model fit
residuals.drc
Extracting residuals from the fitted dose-response model
vinclozolin
Vinclozolin from AR in vitro assay
terbuthylazin
The effect of terbuthylazin on growth rate
cedergreen
The Cedergreen-Ritz-Streibig model
mrdrm
Model-robust dose-response modelling
getMeanFunctions
Display available dose-response models
summary.drc
Summarising non-linear model fits
nasturtium
Dose-response profile of degradation of agrochemical using nasturtium
rdrm
Simulating a dose-response curve
simDR
Simulating ED values under various scenarios
yieldLoss
Calculating yield loss parameters
vcov.drc
Calculating variance-covariance matrix for objects of class 'drc'
plot.drc
Plotting fitted curves for a 'drc' or 'mrdrc' object
secalonic
Root length measurements
noEffect
Testing if there is a dose effect at all
leaflength
Leaf length of barley
W1.3
The three-parameter Weibull functions
beetGrowth
Example of plant growth curve from Covarelli and Onofri (1998)
MM
Michaelis-Menten model
ED.drc
Estimating effective doses
O.mykiss
Test data from a 21 day fish test
LL.3
The three-parameter log-logistic function
comped
Comparison of effective dose values
auxins
Effect of technical grade and commercially formulated auxin herbicides
drm
Fitting dose-response models
bread.drc
Bread and meat for the sandwich
fplogistic
Fractional polynomial-logistic dose-response models
gompGrowth
Gompertz growth models
glymet
Glyphosate and metsulfuron-methyl tested on algae.
finney71
Example from Finney (1971)
hatvalues.drc
Model diagnostics for nonlinear dose-response models
germination
Germination of three crops
selenium
Data from toxicology experiments with selenium
update.drc
Updating and re-fitting a model
searchdrc
Searching through a range of initial parameter values to obtain convergence
print.drc
Printing key features