qualityTools (version 1.55)

compPlot: Function to create comparison Plots

Description

compPlot creates comparison x-y plots of an object of class gageRR. The averages of the multiple readings by each operator on each part are plotted against each other with the operators as indices. This plot compares the values obtained by one operator to those of another.

Usage

compPlot(x, main, xlab, ylab, col, cex.lab, fun = NULL, ...)

Arguments

x

needs to be an object of class gageRR.

main

a main title for the plot

xlab

a label for the x axis

ylab

a label for the y axis

col

plotting color

cex.lab

the magnification to be used for x and y labels relative to the current setting of cex

fun

(optional) function that will be applied to the multiple readings of each part. fun should be an object of class function like mean,median, sum, etc. By default, fun is set to ‘NULL’ and all readings will be plotted.

...

arguments to be passed to methods, such as graphical parameters (see par).

References

The idea of the plot and the example given by example(compPlot) are out of:

• CHRYSLER Group LLC; FORD Motor Company; GENERAL MOTORS Corporation: Measurement System Analysis (MSA), p.115, 4rd ed. Southfield: AIAG, 2010.

See Also

gageRR par http://www.r-qualitytools.org

Examples

#create gageRR-object
gdo = gageRRDesign(Operators = 3, Parts = 10, Measurements = 3, 
      randomize = FALSE)
#vector of responses       
y = c(0.29,0.08, 0.04,-0.56,-0.47,-1.38,1.34,1.19,0.88,0.47,0.01,0.14,-0.80,       
      -0.56,-1.46, 0.02,-0.20,-0.29,0.59,0.47,0.02,-0.31,-0.63,-0.46,2.26,
      1.80,1.77,-1.36,-1.68,-1.49,0.41,0.25,-0.11,-0.68,-1.22,-1.13,1.17,0.94,
      1.09,0.50,1.03,0.20,-0.92,-1.20,-1.07,-0.11, 0.22,-0.67,0.75,0.55,0.01,
      -0.20, 0.08,-0.56,1.99,2.12,1.45,-1.25,-1.62,-1.77,0.64,0.07,-0.15,-0.58,
      -0.68,-0.96,1.27,1.34,0.67,0.64,0.20,0.11,-0.84,-1.28,-1.45,-0.21,0.06,
      -0.49,0.66,0.83,0.21,-0.17,-0.34,-0.49,2.01,2.19,1.87,-1.31,-1.50,-2.16)
#appropriate responses      
response(gdo)=y  
#perform and gageRR                                                                  
gdo=gageRR(gdo)                                                                    
compPlot(gdo,pch=19)