SSDforR (version 1.0)

Xmrchart: SPC XMR-chart

Description

the X-mR-chart can be use to detect changes within and between phases. This chart should not, however, be used when there is a trend in the data. It can be used, though, when you are not using samples of data, but individual data points.

Usage

Xmrchart(behavior, phaseX, v1, bandX, ABxlab, ABylab, ABmain)

Arguments

behavior

behavior variable

phaseX

phase variable

v1

phase bands are based upon i.e. "A"

bandX

number of SDs i.e 1,2,or 3

ABxlab

x labels

ABylab

y labels

ABmain

main title

References

go to www.ssdanalysis.com

Examples

cry<-c(3, 4, 2, 5, 3, 4, NA, 2, 2, 3, 2, 1, 2, NA, 2, 2, 1, 2, 1, 0, 0, 0)
pcry<-c("A", "A", "A", "A", "A", "A", NA, "B", "B", "B", "B", "B", "B", NA, "B1", "B1", "B1", "B1", "B1", "B1", "B1", "B1")
Xmrchart(cry, pcry, "A", 2, "week", "amoun", "X-MR-chart")