Plot dose-response models

Produce graphics of dose-response data and dose-response relationships either combined or separately, for one or more substances.

drplot(drresults, data, dtype, alpha, ctype, path,
     fileprefix, overlay, xlim, ylim, xlab, ylab, axes, frame.plot, postscript,
     pdf, png, bw, pointsize, colors, ltys, pchs, devoff, lpos)

Arguments

drresults	A data frame as returned from drfit.
data	A data frame as returned from drdata. The data frame has to contain at least a factor called "substance", a vector called "unit" containing the unit used for the dose, a column "response" with the response values of the test system normalized between 0 and 1, a column "dose" with the numeric dose values and a factor called "dosefactor" containing the dose as a factor.
dtype	A string describing if the raw data should be plotted ("raw"), or an error bar should be constructed from the standard deviations of the responses at each dose level ("std", default value) or from the confidence intervals ("conf"). If you don't want to see the data, set it to "none".
alpha	The confidence level, defaulting to 0.95, only used if dtype "conf" has been chosen.
ctype	This argument decides if horizontal lines are drawn to show the scatter of the control values (dose = 0), if there are more than three of them. Defaults to "none", further allowed values are "std" and "conf" for displaying the standard deviation of the controls or the confidence interval for the mean of the controls.
path	The path where graphic files should be put if any are produced. Defaults to "./" i.e. the current working directory of R.
fileprefix	A string which will form the beginning of each filename, if graphic files are created. Defaults to "drplot".
overlay	If TRUE, all output will be put into one graph, otherwise a separate graph will be created for each substance.
xlim	The plot limits (min,max) on the dose axis.
ylim	The plot limits (min,max) on the response axis.
xlab	The axis title for the x axis. Defaults to "Concentration in" unit.
ylab	The axis title for the y axis. Defaults to "Normalized response".
axes	Specifies if axes should be drawn. Default is TRUE, as in plot.default
frame.plot	Specifies if the plot should be framed. Default is TRUE, as in plot.default
postscript	If TRUE, (a) postscript graph(s) will be created. Otherwise, and if the pdf and png arguments are also FALSE, graphics will be displayed with a screen graphics device.
pdf	If TRUE, (a) pdf graph(s) will be created. Otherwise, and if the postscript, and png arguments are also FALSE, graphics will be displayed with a screen graphics device.
png	If TRUE, (a) png graph(s) will be created. Otherwise, and if the postscript and pdf arguments are also FALSE, graphics will be displayed with a screen graphics device.
bw	A boolean deciding if the plots will be black and white or not. Default is TRUE.
pointsize	The pointsize used for pdf, png and postscript graphics.
colors	This is a vector of colors, defaulting to 1:8, used for plotting the data.
ltys	This is a vector of line types for the dose-response models, defaulting to 1:8.
pchs	This is a vector of character types for the data. The default uses built-in characters 1:n with n being the number of substances for which data are plotted for overlays, or always 1 when no overlay plot is generated.
lpos	An optional argument defaulting to "topright" specifying the position of the legend by being passed to the legend function. See the help for the legend function for all possiblities.
devoff	If set to FALSE, the device will not be closed after creation of an overlay pdf, png or postscript graph, so texts and other elements can be added.

Value

results

You will get plots of data and/or the fitted dose-response curves, on the screen and/or as postscript/pdf/png files, depending on the parameters.

Note

There is a demo for each dataset that can be accessed by demo(dataset)

Examples

data(antifoul)
r <- drfit(antifoul)
#> 
#> TBT: Fitting data...
#> Waiting for profiling to be done...
#> 
#> Zn Pyrithion: Fitting data...
#> Waiting for profiling to be done...
drplot(r,antifoul)