geom_crossbar
geom_crossbar(mapping=NULL, data=NULL, stat="identity", position="identity", fatten=2, ...)
Hollow bar with middle indicated by horizontal line
This page describes geom_crossbar, see layer and qplot for how to create a complete plot from individual components.
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Aesthetics
The following aesthetics can be used with geom_crossbar. Aesthetics are mapped to variables in the data with the aes function: geom_crossbar(aes(x = var)). Note that you do not need quotes around the variable name.
Scales control how the variable is mapped to the aesthetic and are listed after each aesthetic.
| Aesthetic | Default | Related scales |
|---|---|---|
| x | required | continuous, date, datetime, discrete |
| y | required | continuous, date, datetime, discrete |
| ymin | required | |
| ymax | required | |
| colour | black | brewer, gradient, gradient2, gradientn, grey, hue, identity, manual |
| fill | NA | brewer, gradient, gradient2, gradientn, grey, hue, identity, manual |
| size | 0.5 | identity, manual, size |
| linetype | 1 | identity, linetype, manual |
| alpha | 1 |
Layers are divided into groups by the group aesthetic. By default this is set to the interaction of all categorical variables present in the plot.
Parameters
Parameters control the appearance of the geom. In addition to the parameters listed below (if any), any aesthetic can be used as a parameter, in which case it will override any aesthetic mapping.
fatten: a multiplicate factor to fatten middle bar bywidth: NULL
Returns
This function returns a layer object.
See also
- geom_errorbar: error bars
- geom_pointrange: range indicated by straight line, with point in the middle
- geom_linerange: range indicated by straight line + examples
- stat_summary: examples of these guys in use
- geom_smooth: for continuous analog
Examples
> # See geom_linerange for examples
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