Description Usage Arguments Value Author(s) See Also Examples
A utility function to draw and label a point in a 2D (or 3D) HE plot corresponding to a point null hypothesis being tested. This is most useful for repeated measure designs where null hypotheses for withinS effects often correspond to (0,0).
1 
x 
Horizontal coordinate for H0 
y 
Vertical coordinate for H0 
z 
z coordinate for H0. If not NULL, the function assumes that
a 
label 
Text used to label the point. Defaults to 
cex 
Point and text size. For 3D plots, the function uses

pch 
Plot character. Ignored for 3D plots. 
col 
Color for text, character and lines 
lty 
Line type for vertical and horizontal reference lines. Not
drawn if 
pos 
Position of text. Ignored for 3D plots 
None. Used for side effect of drawing on the current plot.
Michael Friendly
cross3d
, ~~~
1 2 3 4 5 6  Vocab.mod < lm(cbind(grade8,grade9,grade10,grade11) ~ 1, data=VocabGrowth)
idata <data.frame(grade=ordered(8:11))
heplot(Vocab.mod, type="III", idata=idata, idesign=~grade, iterm="grade",
main="HE plot for Grade effect")
mark.H0()

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