| interaction.positioned {HH} | R Documentation |
This is intended to be a method for interaction for positioned
factors. Since interaction is not currently implemented as
a generic, interaction.positioned is a standalone function.
The result is assigned a position. The position for each interaction
level is the position of the corresponding a factor plus a
scaled level of the b factor. The default scale is .1.
interaction.positioned(..., ## exactly two factors
drop = FALSE, sep = ".",
b.offset=0,
b.scale=.1)
... |
exactly two factors. The first
factor a is used as the major factor in sort order.
The second factor b is used as minor factor in sort order. |
b.offset |
amount added to position(b) to adjust appearance. |
b.scale |
scale to relate units of position(a) to
units of position(b). |
drop, sep |
See factor. |
"positioned" object containing the ordinary interaction with a
"position" attribute.
Richard M. Heiberger <rmh@temple.edu>
a <- positioned(letters[c(1,2,3,1,2,3)], value=c(1,4,9)) b <- positioned(LETTERS[c(4,4,4,5,5,5)], value=c(1,2)) a.b <- interaction.positioned(a, b) a.b.2 <- interaction.positioned(a, b, b.scale=.2) b.a <- interaction.positioned(b, a)