msd_class: Methods for the object returned by 'msd'.

In metRology: Support for Metrological Applications

Methods for the object returned by msd.

Description

Print and plotting methods for the MSD object class returned by msd.

Usage

       ## S3 method for class 'MSD'
print(x, ...)

       ## S3 method for class 'MSD'
plot(x, type="h", ylab="MSD", ylim=NULL, ...)

       ## S3 method for class 'MSD'
barplot(height, ylab="MSD", names.arg=names(height), 
	crit.vals=TRUE, lty.crit=c(2,1), col.crit=2, lwd.crit=c(1,2), 
	probs=c(0.95, 0.99), n=length(height), ylim=NULL, ... )

Arguments

x, height	Object of class "MSD".
type	The plot type. See plot.default.
ylab	Label for vertical axis, passed to barplot
names.arg	Labels for individual bars in bar plot, passed to barplot. If names(height) is NULL, bars are numbered.
crit.vals	If TRUE, horizontal lines at critical values are added to the plot. These are calculated by link{qmsd} based on supplied values of probs and n.
lty.crit, col.crit, lwd.crit	Vectors of line style parameters for plotted critical values, passed to abline.
probs	vector of probabilities at which critical values are drawn.
n	integer number of observations for critical value calculation; passed to qmsd.
ylim	Limits for y-axis. the default makes sure the axis begins at zero and includes all values
...	Parameters passed to other methods.

Details

See msd for the object description.

For the barplot method, critical values are ‘single-observation’ quantiles. For use as an outlier test, use probabilities adjusted for multiple comparison; for example, for the barplot method, consider raising the default probs to the power 1/n.

Value

The print method returns the object, invisibly.

The plot method returns NULL, invisibly.

The barplot methods return the values at the midpoint of each bar.

Author(s)

S. L. R. Ellison [e-mail]

See Also

msd, qmsd.

Examples

  data(Pb)
  msd.Pb<-msd(Pb$value, Pb$u)  # Uses individual standard uncertainties
  names(msd.Pb) <- as.character(Pb$lab)
  
  plot(msd.Pb)

  barplot(msd.Pb)

metRology documentation built on Dec. 16, 2024, 3:01 a.m.