Plot Data Using Graphics Symbol Map
Apply a graphics symbol map to a vector of data values and plot the resulting symbols.
invoke.symbolmap(map, values, x=NULL, y = NULL, ..., add = FALSE,
do.plot = TRUE, started = add && do.plot)map |
Graphics symbol map (object of class |
values |
Vector of data that can be mapped by the symbol map. |
x,y |
Coordinate vectors for the spatial locations of the symbols to be plotted. |
... |
Additional graphics parameters. |
add |
Logical value indicating whether to add the symbols to
an existing plot ( |
do.plot |
Logical value indicating whether to actually perform the plotting. |
started |
Logical value indicating whether the plot has already been initialised. |
A symbol map is an association between data values and graphical symbols.
This command applies the symbol map map to the data
values and plots the resulting symbols at the locations
given by xy.coords(x,y).
(Invisibly) the maximum diameter of the symbols, in user coordinate units.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au
, Rolf Turner r.turner@auckland.ac.nz
and Ege Rubak rubak@math.aau.dk.
plot.symbolmap to plot the graphics map itself.
symbolmap to create a graphics map.
g <- symbolmap(range=c(-1,1),
shape=function(x) ifelse(x > 0, "circles", "squares"),
size=function(x) sqrt(ifelse(x > 0, x/pi, -x))/15,
bg=function(x) ifelse(x > 0, "green", "red"))
plot(square(1), main="")
a <- invoke.symbolmap(g, runif(10, -1, 1), runifrect(10), add=TRUE)
aPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.