demopal
provides an example plot of some type
to illustrate a color palette pal
.
Arguments
- pal
A color palette (to be illustrated). Default:
pal = pal_unikn
.- type
The type of plot to be used (as character string or integer value). Permissible types are
"bar"
,"curve"
,"mosaic"
,"polygon"
, or"scatter"
(or an integer value from 1 to 5, respectively).- pal_name
A name for the input color palette
pal
(shown on bottom-right margin). Default:pal_name = NULL
(deparsing to input name).- ...
Auxiliary arguments passed to
type
-specific plots (see details).
Details
The demopal
wrapper function passes a range of arguments to more specific functions.
Common arguments include:
col_par
Default color forpar(col)
;alpha
Default value for color transparency (in 0:1);n
A scaling parameter (for random data generation);main
plot title (on top);sub
plot subtitle (on right margin);seed
A random seed value (for reproducible randomness).
The fit between a color palette pal
and plot type
depends on the uses of colors in a plot.
For instance, overlaps of transparent color areas can be evaluated
with plot type = "curve"
or plot type = "scatter"
(and 0 < alpha < 1
).
Some functions additionally accept type-specific arguments
(e.g., beside
, horiz
, and as_prop
, for plot type = "bar"
,
and cex
for plot type = "scatter"
).
The type-specific functions usually generate some random data
(scaled by a parameter n
) that is being plotted.
This data is returned (as an invisible R object)
to enable a plot's reconstruction.
Examples
demopal(pal = pal_petrol, type = 1)
my_pal <- c(rev(pal_pinky), pal_seeblau)
# Selecting plot type:
demopal(my_pal, type = 2) # by numeric index
demopal(my_pal, type = "polygon") # by name
# Passing type-specific arguments:
demopal(type = "scatter", col_par = "black", n = 200, cex = c(2, 4, 6), seed = 101)