Rectangles • cxplot

geom_rect() and geom_tile() do the same thing, but are parameterised differently: geom_rect() uses the locations of the four corners (xmin, xmax, ymin and ymax), while geom_tile() uses the center of the tile and its size (x, y, width, height). geom_raster() is a high performance special case for when all the tiles are the same size.


geom_raster({
 "mapping" = null,
 "data" = null,
 "stat" = "identity",
 "position" = "identity",
 "...",
 "hjust" = 0.5,
 "vjust" = 0.5,
 "interpolate" = false,
 "na.rm" = false,
 "show.legend" = NA,
 "inherit.aes" = true
})

geom_rect({
 "mapping" = null,
 "data" = null,
 "stat" = "identity",
 "position" = "identity",
 "...",
 "linejoin" = "mitre",
 "na.rm" = false,
 "show.legend" = NA,
 "inherit.aes" = true
})

geom_tile({
 "mapping" = null,
 "data" = null,
 "stat" = "identity",
 "position" = "identity",
 "...",
 "linejoin" = "mitre",
 "na.rm" = false,
 "show.legend" = NA,
 "inherit.aes" = true
})

Arguments

mapping	Set of aesthetic mappings created by `aes()` or `aes_()`. If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.
data	The data to be displayed in this layer. There are three options: If NULL, the default, the data is inherited from the plot data as specified in the call to `cxplot()`. A data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See fortify() for which variables will be created. A function will be called with a single argument, the plot data. The return value must be a data.frame, and will be used as the layer data. A function can be created from a formula (e.g. ~ head(.x, 10)).
stat	The statistical transformation to use on the data for this layer, as a string.
position	Position adjustment, either as a string, or the result of a call to a position adjustment function.
...	Other arguments passed on to `layer()`. These are often aesthetics, used to set an aesthetic to a fixed value, like `color` = "red" or `size` = 3. They may also be parameters to the paired geom/stat.
hjust, vjust	horizontal and vertical justification of the grob. Each justification value should be a number between 0 and 1. Defaults to 0.5 for both, centering each pixel over its data location.
interpolate	If TRUE interpolate linearly, if FALSE (the default) don't interpolate.
na.rm	If FALSE, the default, missing values are removed with a warning. If TRUE, missing values are silently removed.
show.legend	logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes. It can also be a named logical vector to finely select the aesthetics to display.
inherit.aes	If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. borders().
linejoin	Line join style (round, mitre, bevel).

Aesthetics

geom_tile() understands the following aesthetics (required aesthetics are in bold):

alpha

color

fill

group

height

linetype

size

width

Learn more about setting these aesthetics in vignette("cxplot-specs").

Examples


var cxp = new cxplot("canvas1", dsmall, aes("x", "y"));
cxp.geom_raster();