Heat map-like representation with proportional symbols

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Description

This function represents a two dimensional table plot with proportional or colored squares or circles for each value.

Usage

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table.value(dftab, coordsx = 1:ncol(as.matrix(dftab)), coordsy =
nrow(as.matrix(dftab)):1, labelsx, labelsy, breaks = NULL, method =
c("size", "color"), symbol = c("square", "circle", "diamond",
"uptriangle", "downtriangle"), col = NULL, nclass = 3, center = 0,
centerpar = NULL, plot = TRUE, storeData = TRUE, add = FALSE, pos = -1, ...)

Arguments

dftab

a data frame, matrix, contingency table or distance matrix used to produce the plot

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

columns labels

labelsy

rows labels

breaks

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

method

color or size value for represent z. If color, a palette of color is used for the symbols (one color per interval). If size, symbols of proportional area are used. Area is 0 for values equals to center (default 0). Two colors are used, for values less than center and larger than center.

symbol

value for symbol type

col

a color or a colors vector to color symbols. If method is size, a 2-length vector of color is expected. If method is color, it must have as many colors as the number of class

nclass

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

center

a center value for method size

centerpar

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

plot

a logical indicating if the graphics is displayed

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

add

a logical. If TRUE, the graphic is superposed to the graphics already plotted in the current device

pos

an integer indicating the position of the environment where the data are stored, relative to the environment where the function is called. Useful only if storeData is FALSE

...

additional graphical parameters (see adegpar and trellis.par.get)

Value

An object of class ADEg (subclass T.cont if dftab is an table object, otherwise subclass T.value) or ADEgS (if add is TRUE).
The result is displayed if plot is TRUE.

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 aurelie.siberchicot@univ-lyon1.fr 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

T.value T.cont ADEg.T

Examples

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## data.frame
data(olympic, package = "ade4")
w <- olympic$tab
w <- data.frame(scale(w))
wpca <- ade4::dudi.pca(w, scann = FALSE)
g1 <- table.value(w, ppoints.cex = 0.5, axis.line = list(col = "darkblue"), 
  axis.text = list(col = "darkgrey"))
g2 <- table.value(w, coordsy = rank(wpca$li[, 1]), ppoints.cex = 0.5, 
  axis.line = list(col = "darkblue"), axis.text = list(col = "darkgrey"))
g3 <- table.value(w, coordsy = wpca$li[, 1], coordsx = wpca$co[, 1], ppoints.cex = 0.5, 
  axis.line = list(col = "darkblue"), axis.text = list(col = "darkgrey"))

## distance
data(eurodist)
g5 <- table.value(eurodist, symbol = "circle", 
  ptable.margin = list(bottom = 5, top = 16, left = 5, right = 16))

## Not run: 
## table
data(rpjdl, package = "ade4")
w <- data.frame(t(rpjdl$fau))
wcoa <- ade4::dudi.coa(w, scann = FALSE)
g6 <- table.value(as.table(as.matrix(w)), meanY = TRUE, coordsx = wcoa$c1[,1], 
  coordsy = rank(wcoa$l1[,1]), ppoints.cex = 0.2, labelsx = "", col = "black")

## End(Not run)

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