Core-generating function for strucplot
returning a function
producing mosaic plots.
struc_mosaic(zero_size = 0.5, zero_split = FALSE, zero_shade = TRUE,
zero_gp = gpar(col = 0), panel = NULL)
A function with arguments:
table of residuals.
table of observed values.
not used by struc_mosaic
.
object of class "unit"
specifying the space
between the tiles.
list of gpar
objects used for the drawing the tiles.
vector of logicals indicating, for each dimension of the table, the split direction.
size of the bullets used for zero-entries in the contingency table (if 0, no bullets are drawn).
logical controlling whether zero cells should be
further split. If FALSE
and zero_shade
is
FALSE
, only one bullet is drawn (centered) for unsplit
zero cells. If FALSE
and zero_shade
is
TRUE
, a bullet for each zero cell is drawn to allow, e.g.,
residual-based shadings to be effective also for zero cells.
logical controlling whether zero bullets should be shaded.
object of class "gpar"
used
for zero bullets in case they are not shaded.
Optional function with arguments: residuals
,
observed
, expected
, index
, gp
, and
name
called by the
struc_mosaic
workhorse for each tile that is drawn in the
mosaic. index
is an integer vector with the tile's
coordinates in the contingency table, gp
a gpar
object
for the tile, and name
a label to be assigned to the drawn
grid object.
David Meyer David.Meyer@R-project.org
This function is usually called by strucplot
(typically
when called by mosaic
) and returns a function used by
strucplot
to produce mosaic plots.
Cohen, A. (1980), On the graphical display of the significant components in a two-way contingency table. Communications in Statistics---Theory and Methods, A9, 1025--1041.
Friendly, M. (1992), Graphical methods for categorical data. SAS User Group International Conference Proceedings, 17, 190--200. http://datavis.ca/papers/sugi/sugi17.pdf
Meyer, D., Zeileis, A., and Hornik, K. (2006),
The strucplot framework: Visualizing multi-way contingency tables with
vcd.
Journal of Statistical Software, 17(3), 1-48.
tools:::Rd_expr_doi("10.18637/jss.v017.i03") and available as
vignette("strucplot")
.
mosaic
,
strucplot
,
structable
## Titanic data
data("Titanic")
## mosaic plot with large zeros
strucplot(Titanic, core = struc_mosaic(zero_size = 1))
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