Core-generating Function for Sieve Plots

Core-generating function for strucplot returning a function producing sieve plots.

struc_sieve(sievetype = c("observed","expected"), gp_tile = gpar(),
scale = 1)

Arguments

sievetype

logical indicating whether rectangles should be filled according to observed or expected frequencies.

gp_tile

object of class "gpar", controlling the appearance of all static elements of the cells (e.g., border and fill color).

scale

Scaling factor for the sieve.

Details

This function is usually called by strucplot (typically when called by sieve) and returns a function used by strucplot to produce sieve plots.

Value

A function with arguments:

residuals

table of residuals.

observed

table of observed values.

expected

not used by struc_sieve.

spacing

object of class "unit" specifying the space between the tiles.

gp

list of gpar objects used for the drawing the tiles.

split_vertical

vector of logicals indicating, for each dimension of the table, the split direction.

Author

David Meyer David.Meyer@R-project.org

See also

sieve, strucplot, structable

References

Riedwyl, H., and Schüpbach, M. (1994), Parquet diagram to plot contingency tables. In F. Faulbaum (ed.), Softstat '93: Advances in Statistical Software, 293–299. Gustav Fischer, New York.

Friendly, M. (2000), Visualizing Categorical Data, SAS Institute, Cary, NC.

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. doi:10.18637/jss.v017.i03 and available as vignette("strucplot").

Examples

## Titanic data
data("Titanic")
strucplot(Titanic, core = struc_sieve)