S2.value-class {adegraphics} | R Documentation |

`S2.value`

A class for the creation and display of bi-dimensional plot with a third value represented (as a variable) by symbols.

`S2.value`

objects can be created by calls of the form `new("S2.value", ...)`

.

The regular usage in this package is to use the `s.value`

function.

`data`

:a list containing data or data's name.

`dfxy`

: the displayed values in the form of a data frame, a name or a matching call.`z`

: a vector (or a matrix) with as many values as rows in`dfxy`

.`xax`

: an integer or a vector indicating the columns of`dfxy`

kept for the x-axes.`yax`

: an integer or a vector indicating the columns of`dfxy`

kept for the y-axes.`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.S2`

class. The specific slots for`S2.value`

objects are:`method`

: the method of representation for`z`

(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.`breaks`

: a vector containing the breaks used for splitting`z`

value. If`NULL`

,`pretty(z, n)`

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.

`stats`

a list of internal preliminary calculations

`s.misc`

a list of some others internal parameters:

`plegend.update`

: a logical indicating if the legend parameters are updating`breaks.update`

: a logical indicating if the legend breaks are updating`lim.update`

: a logical indicating if the limits are updating

`Call`

an object of class

`call`

Class `ADEg.S2`

, directly.

Class `ADEg`

, by class `ADEg.S2`

, distance 2.

Class `ADEgORtrellis`

, by class `ADEg.S2`

, distance 3.

Class `ADEgORADEgSORtrellis`

, by class `ADEg.S2`

, distance 3.

The methods of the father classes `"ADEg.S2"`

and `"ADEg"`

can be used by inheritance.
The specific methods for `S2.value`

are:

- prepare
`signature(object = "S2.value")`

: calls the parent method (`prepare`

for`ADEg.S2`

), modifies some graphical parameters used by default and calculates limits.- panel
`signature(object = "S2.value")`

: draws symbols.

For the symbol size, if the method is `size`

, we use perceptual scaling (Tanimura et al. 2006).

Alice Julien-Laferriere, Aurelie Siberchicot aurelie.siberchicot@univ-lyon1.fr and Stephane Dray

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

showClass("S2.value")

[Package *adegraphics* version 1.0-15 Index]