geom_bar_pic: Pics as bars
In MalditoBarbudo/ggpic: Using raster objects as geoms in ggplot2

Description Usage Arguments Details Aesthetics Computed variables See Also

View source: R/geom_bar_pic.R

As in geom_bar, depending on what is maped to bar_pic height two types of bar_pic charts are produced. Default is stat = "count", which makes the height of the bar_pic proportional to the numbers of cases in each group. stat = "identity" will map height to values in the data, so you need to map an y aesthetic also.

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geom_bar_pic(mapping = NULL, data = NULL, stat = "count",
  position = "dodge", width = NULL, na.rm = FALSE, show.legend = NA,
  asis = FALSE, inherit.aes = TRUE, ...)

`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 `ggplot`. 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.
`stat`	Override the default connection between `geom_bar_pic` and `stat_count`.
`position`	Position adjustment, either as a string, or the result of a call to a position adjustment function.
`width`	Pic width. By default, set to 90% of the resolution of the data.
`na.rm`	If `FALSE` (the default), removes missing values with a warning. If `TRUE` silently removes missing values.
`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.
`asis`	Logical indicating if the pic must be used as is, with no filling. If FALSE, the default, image not transparent pixels will be filled to the color provided in `fill` or black (default). If TRUE, image will maintain the original colors.
`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`.
`...`	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.

As opposed to geom_bar, multiple x's occurring in the same place will be "dodged" with position = "dodge". If you want your pics stacked, change to position = "stack".

geom_bar_pic understand the following aesthetics (required aesthetics are in bold):