Points • cxplot

The point geom is used to create scatterplots. The scatterplot is most useful for displaying the relationship between two continuous variables. It can be used to compare one continuous and one categorical variable, or two categorical variables, but a variation like geom_jitter(), geom_count(), or geom_bin2d() is usually more appropriate. A bubblechart is a scatterplot with a third variable mapped to the size of points.


geom_point({
 "mapping" = null,
 "data" = null,
 "stat" = "identity",
 "position" = "identity",
 "...",
 "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.
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().

Aesthetics

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

alpha

color

fill

group

shape

size

stroke

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

Examples


var cxp = new cxplot("canvas1", mtcars, aes("wt", "mpg"));
cxp.geom_point();


// Add aesthetic mappings
var cxp = new cxplot("canvas2", mtcars, aes("wt", "mpg"));
cxp.geom_point(aes({"color": {"factor": "cyl"}}));


var cxp = new cxplot("canvas3", mtcars, aes("wt", "mpg"));
cxp.geom_point(aes({"shape": {"factor": "cyl"}}));


// A "bubblechart":
var cxp = new cxplot("canvas4", mtcars, aes("wt", "mpg"));
cxp.geom_point(aes({"size": "qsec"}));


// Set aesthetics to fixed value
var cxp = new cxplot("canvas5", mtcars, aes("wt", "mpg"));
cxp.geom_point({"color": "red", "size": 3});