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drc (version 2.3-7)
Analysis of dose-response curves
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
2.3-7
License
GPL-2
Homepage
http://www.r-project.org
Maintainer
Christian Ritz
Last Published
April 18th, 2013
Functions in drc (2.3-7)
Search functions
SI
Comparing selectivity indices across curves
gaussian
Normal and log-normal biphasic dose-response models
modelFit
Assessing the model fit
summary.drc
Summarising non-linear model fits
ryegrass
Effect of ferulic acid on growth of ryegrass
leaflength
Leaf length of barley
mrdrm
Model-robust dose-response modelling
S.capricornutum
Effect of cadmium on growth of green alga
getInitial
Showing starting values used
spinach
Inhibition of photosynthesis
deguelin
Deguelin applied to chrysanthemum aphis
P.promelas
Effect of sodium pentachlorophenate on growth of fathead minnow
AR
Asymptotic regression model
yieldLoss
Calculating yield loss parameters
lettuce
Hormesis in lettuce plants
braincousens
The Brain-Cousens hormesis models
LL.2
The two-parameter log-logistic function
selenium
Data from toxicology experiments with selenium
secalonic
Root length measurements
predict.drc
Prediction
terbuthylazin
The effect of terbuthylazin on growth rate
acidiq
Acifluorfen and diquat tested on Lemna minor.
mr.test
Mizon-Richard test for dose-response models
beetGrowth
Example of plant growth curve from Covarelli and Onofri (1998)
drmc
Sets control arguments
residuals.drc
Extracting residuals from the fitted dose-response model
PR
Expected or predicted response
boxcox.drc
Transform-both-sides Box-Cox transformation
simDR
Simulating ED values under various scenarios
lepidium
Dose-response profile of degradation of agrochemical using lepidium
cedergreen
The Cedergreen-Ritz-Streibig model
mselect
Dose-response model selection
isobole
Creating isobolograms
EXD
Exponential decay model
NEC
Dose-response model for estimation of no effect concentration (NEC).
W1.4
The four-parameter Weibull functions
drm
Fitting dose-response models
daphnids
Daphnia test
CRS.4a
The Cedergreen-Ritz-Streibig model
getMeanFunctions
Display available dose-response models
M.bahia
Effect of an effluent on the growth of mysid shrimp
comped
Comparison of effective dose values
noEffect
Testing if there is a dose effect at all
S.alba
Potency of two herbicides
fplogistic
Fractional polynomial-logistic dose-response models
searchdrc
Searching through a range of initial parameter values to obtain convergence
auxins
Effect of technical grade and commercially formulated auxin herbicides
etmotc
Effect of erythromycin on mixed sewage microorganisms
MAX
Maximum mean response
print.summary.drc
Printing summary of non-linear model fits
W1.2
The two-parameter Weibull functions
O.mykiss
Test data from a 21 day fish test
bread.drc
Bread and meat for the sandwich
gompertzd
The derivative of the Gompertz function
ED.drc
Estimating effective doses
nasturtium
Dose-response profile of degradation of agrochemical using nasturtium
CRS.5a
Cedergreen-Ritz-Streibig dose-reponse model for describing hormesis
vinclozolin
Vinclozolin from AR in vitro assay
germination
Germination of three crops
logistic
The logistic model
llogistic
The log-logistic function
earthworms
Earthworm toxicity test
weibull1
Weibull model functions
G.aparine
Herbicide applied to Galium aparine
LL.3
The three-parameter log-logistic function
MM
Michaelis-Menten model
RScompetition
Competition between two biotypes
confint.drc
Confidence Intervals for model parameters
glymet
Glyphosate and metsulfuron-methyl tested on algae.
maED
Estimation of ED values using model-averaging
finney71
Example from Finney (1971)
H.virescens
Mortality of tobacco budworms
heartrate
Heart rate baroreflexes for rabbits
baro5
The modified baro5 function
mixture
Fitting binary mixture models
LL.4
The four-parameter log-logistic function
fitted.drc
Extract fitted values from model
lnormal
Log-normal dose-response model
BC.5
The Brain-Cousens hormesis models
methionine
Weight gain for different methionine sources
neill.test
Neill's lack-of-fit test for dose-response models
ursa
Model function for the universal response surface approach (URSA) for the quantitative assessment of drug interaction
rdrm
Simulating a dose-response curve
plot.drc
Plotting fitted curves for a 'drc' or 'mrdrc' object
print.drc
Printing key features
vcov.drc
Calculating variance-covariance matrix for objects of class 'drc'
update.drc
Updating and re-fitting a model
LL.5
The five-parameter log-logistic function
anova.drc
ANOVA for dose-response model fits
algae
Volume of algae as function of increasing concentrations of a herbicide
coef.drc
Extract Model Coefficients
lin.test
Lack-of-fit test for the mean structure based on cumulated residuals
gompertz
Mean function for the Gompertz dose-response or growth curve
mecter
Mechlorprop and terbythylazine tested on Lemna minor
gompGrowth
Gompertz growth models
W1.3
The three-parameter Weibull functions
backfit
Calculation of backfit values from a fitted dose-response model
chickweed
Germination of common chickweed (
Stellaria media
)
diagnostics
Information on estimation
logLik.drc
Extracting the log likelihood
hatvalues.drc
Model diagnostics for nonlinear dose-response models
compParm
Comparison of parameters
twophase
Two-phase dose-response model