R: Edge shape scales

scale_edge_shape {ggraph} | R Documentation

## Edge shape scales

### Description

This set of scales defines new shape scales for edge geoms equivalent to the ones already defined by ggplot2. See `scale_shape` for more information. The different geoms will know whether to use edge scales or the standard scales so it is not necessary to write `edge_shape` in the call to the geom - just use `shape`.

### Usage

    scale_edge_shape(..., solid = TRUE)

    scale_edge_shape_discrete(..., solid = TRUE)

    scale_edge_shape_continuous(...)

    scale_edge_shape_manual(..., values)

    scale_edge_shape_identity(..., guide = "none")

### Arguments

`...` | Arguments passed on to `discrete_scale` breaks One of: `NULL` for no breaks `waiver()` for the default breaks computed by the transformation object A character vector of breaks A function that takes the limits as input and returns breaks as output limits A character vector that defines possible values of the scale and their order. drop Should unused factor levels be omitted from the scale? The default, `TRUE`, uses the levels that appear in the data; `FALSE` uses all the levels in the factor. na.translate Unlike continuous scales, discrete scales can easily show missing values, and do so by default. If you want to remove missing values from a discrete scale, specify `na.translate = FALSE`. na.value If `na.translate = TRUE`, what value aesthetic value should missing be displayed as? Does not apply to position scales where `NA` is always placed at the far right. aesthetics The names of the aesthetics that this scale works with scale_name The name of the scale palette A palette function that when called with a single integer argument (the number of levels in the scale) returns the values that they should take name The name of the scale. Used as axis or legend title. If `waiver()`, the default, the name of the scale is taken from the first mapping used for that aesthetic. If `NULL`, the legend title will be omitted. labels One of: `NULL` for no labels `waiver()` for the default labels computed by the transformation object A character vector giving labels (must be same length as `breaks`) A function that takes the breaks as input and returns labels as output guide A function used to create a guide or its name. See `guides()` for more info. super The super class to use for the constructed scale
`solid` | Should the shapes be solid, `TRUE`, or hollow, `FALSE`?
`values` | a set of aesthetic values to map data values to. If this is a named vector, then the values will be matched based on the names. If unnamed, values will be matched in order (usually alphabetical) with the limits of the scale. Any data values that don't match will be given `na.value`.
`guide` | Guide to use for this scale.

### Value

A ggproto object inheriting from `Scale`

### See Also

Other scale_edge_*: `scale_edge_alpha`, `scale_edge_colour`, `scale_edge_fill`, `scale_edge_linetype`, `scale_edge_size`, `scale_edge_width`, `scale_label_size`

[Package ggraph version 1.0.2 Index]