calplot(chemCal)R Documentation

Plot calibration graphs

Description

Produce graphics of calibration data, the fitted model as well as prediction and confidence intervals.

Usage

  calplot(x,y,intercept=FALSE,measurand="substance x",xunit="mg/L",yunit="Area",level=0.95)

Arguments

x A vector of x values.
y A vector of y values.
intercept A boolean describing if the calibration curve is to be forced through zero.
measurand The name of what is being measured as a character vector.
xunit The unit of the given values on the x axis as a character vector.
yunit The unit of the y axis as a character vector. Defaults to "Area".
level The confidence level of the confidence and prediction bands. Defaults to 0.95.

Value

A linear model object for y ~ x. You will also get a plot of the calibration data, of your fitted model as well as lines showing the confidence limits and the prediction limits.

Author(s)

Johannes Ranke jranke@uni-bremen.de http://www.uft.uni-bremen.de/chemie/ranke

Examples

data(pahCalibration)
attach(pahCalibration)
## Not run: calplot(conc,phenanthrene,"Phenanthrene","mg/L")
detach(pahCalibration)
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