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This function enables users to draw an arrow on a graph. For example, an arrow can be drawn from a text label of a critical event to a point on the graph. For noninteractive use .
RSarrow(X1,Y1,X2,Y2)
X1 coordinate
Y1 coordinate
X2 coordinate
Y2 coordinate
Charles Auerbach, PhD Wurzweiler School of Social Work Wendy Zeitlin, PhD Montclair State University
Go to www.ssdanalysis.com for more information
Auerbach, Charles, and Zeitlin Wendy. SSD for R: An R Package for Analyzing Single-Subject Data. Oxford University Press, 2014. p46-p50
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")
# now run ABplot(cry,pcry,"week","amount","Crying")
# now run RSarrow(9,10,11,10)
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