T.value-class {adegraphics}

Class T.value

Description

A class for the representation of a matrix, a data frame, or a distance matrix using symbols, varying in size or color.

Objects from the Class

T.value objects can be created by calls of the form new("T.value", ...).

The regular usage in this package is to use the table.value function.

Slots

data:

a list containing data or data's name.

• dftab: the displayed values which can be table, dist or matrix in the form of a data frame, a name or a matching call

• coordsx: an integer or a vector indicating the columns of dftab kept

• coordsy: an integer or a vector indicating the rows of dftab kept

• labelsx: the columns' labels

• labelsy: the rows' labels

• frame: a positive or null integer. It is the number of the frame containing the data (used with sys.frame(..., env = data$frame)). Only if the data are not stored (i.e. data$storeData = FALSE).

• storeData: a logical indicating if the data should be stored in the returned object. If FALSE, only the names of the data arguments are stored.

trellis.par

a list of parameters for lattice call. It will be passed directly to par.settings arguments of the lattice function.

adeg.par

a list of graphical parameters, corresponding to the ones given by adegpar() function.

lattice.call

a list to create the trellis object.

g.args

a list containing some method parameters linked with the created object of ADEg.T class. The specific slots for T.value objects are:

• breaks: a vector of values to split dftab. If NULL, pretty(dftab, nclass) is used.

• nclass: an integer for the number of desired intervals, ignored if breaks is not missing.

• col: a NULL value, a color or a colors vector to color symbols.

• method: the method of representation for dftab (color shading or proportional size).

• symbol: the type of symbol (square or circle).

• center: a center value for method size.

• centerpar: a logical or a list to represent center value using elements in the adegpar("ppoints") list.

stats

a list of internal preliminary calculations

s.misc

a list of some others internal parameters:

• breaks.update: a logical indicating if the legend breaks is updating.

Call

an object of class call

Extends

Class ADEg.T, directly.
Class ADEg, by class ADEg.T, distance 2.
Class ADEgORtrellis, by class ADEg.T, distance 3.
Class ADEgORADEgSORtrellis, by class ADEg.T, distance 3.

Methods

The methods of the father classes "ADEg.T" and "ADEg" can be used by inheritance. The specific methods for T.value are:

prepare

signature(object = "T.value"): calls the parent method (prepare for ADEg.T) and modifies some graphical parameters used by default and calculates limits and grid.

panel

signature(object = "T.value"): draws symbols.

Note

For the symbol size, if the method is size, we use perceptual scaling (Tanimura et al. 2006) .

Author(s)

Alice Julien-Laferriere, Aurelie Siberchicot [e-mail] and Stephane Dray

References

Tanimura, S. and Kuroiwa, C. and Mizota, T. 2006 Proportional symbol mapping in R Journal of Statistical Software 15, 1–7

See Also

ADEg ADEg.T T.cont table.value

Examples

showClass("T.value")