interaction.positioned

From HH v2.1-23
0th

Percentile

interaction method for positioned factors.

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.

Keywords
regression, dplot
Usage
interaction.positioned(...,  ## exactly two factors
drop = FALSE, sep = ".",
b.offset=0,
b.scale=.1)
Arguments
...
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.
Value

• "positioned" object containing the ordinary interaction with a "position" attribute.

positioned.

Aliases
• interaction.positioned
Examples
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)
Documentation reproduced from package HH, version 2.1-23, License: GPL (>= 2)

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