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Create a New align Object

Source: R/align-.R
align.Rd

[Stable]

An Align object interacts with the Layout object to reorder or split observations and, in some cases, add plot components to the Layout.

Usage

align(
  align,
  data = NULL,
  ...,
  plot = NULL,
  size = NULL,
  schemes = NULL,
  no_axes = NULL,
  active = NULL,
  call = caller_call()
)

Arguments

align

An Align object.

data

The following options can be used:

  • NULL: No data is set.

  • waiver(): Inherits the data from the layout matrix.

  • A function (including purrr-like lambda syntax): Applied to the layout matrix to transform the data before use. To transform the final plot data, please use scheme_data().

  • A matrix, data.frame, or atomic vector.

...

Additional fields passed to the align object.

plot

A ggplot object.

size

The relative size of the plot, can be specified as a unit(). Note that for circle_layout(), all size values will be interpreted as relative sizes, as this layout type adjusts based on the available space in the circular arrangement.

schemes

Options for schemes:

  • NULL: Used when align do not add a plot.

  • waiver(): Try to infer schemes based on data.

no_axes

[Experimental] Logical; if TRUE, removes axes elements for the alignment axis using theme_no_axes(). By default, will use the option- "ggalign.align_no_axes".

active

A active() object that defines the context settings when added to a layout.

call

The call used to construct the Align object, for reporting messages.

Value

A new ggalign_plot object.

Details

Each of the Align* objects is just a ggproto() object, descended from the top-level Align, and each implements various methods and fields.

To create a new type of Align* object, you typically will want to override one or more of the following:

  • setup_params: Prepare parameter or check parameters used by this plot.

  • setup_data: Prepare data used by this plot.

  • compute: A method used to compute statistics.

  • align: A method used to group observations into panel or reorder observations.

  • draw: A method used to draw the plot. Must return a ggplot object.

Discrete Axis Alignment

It is important to note that we consider rows as observations, meaning vec_size(data)/NROW(data) must match the number of observations along the axis used for alignment (x-axis for a vertical stack layout, y-axis for a horizontal stack layout).

Examples

align_dendro()
#> <Class: AlignDendro AlignHclust Align AlignProto>
#>      plot: yes
#>   reorder: yes
#>     split: no