Restore a deleted field

Bring back a deleted field under its name, as it was when deleted.

Usage

cellucid_field_restore(viewer, field)

Arguments

viewer

A viewer cellucid_view() or cellucid_serve() returned.

field

The deleted field by the name it had when deleted. A named list. Required.

source

"obs" for a column of the cells, "var" for a gene. One of "obs", "var". Required.

Value

A cellucid_action_request, at once and invisibly: the action is sent now, or when the viewer's channel opens. cellucid_action_result(request) returns its outcome (what it did, as names, counts and ids), or NULL when it had nothing to report; request$step is the history step it made.

Details

The viewer's action field.restore (Fields). It changes the viewer's state: one step of the viewer's history, labelled as R's, undone like any other. The state it can change: field-overlays, active-field, filters, colors, highlights, views.

See also

cellucid_act() sends any action by its type, and cellucid_action_result() collects its answer.

Examples

if (interactive() && requireNamespace("SeuratObject", quietly = TRUE)) {
  data("pbmc_small", package = "SeuratObject")
  viewer <- cellucid_view(SeuratObject::UpdateSeuratObject(pbmc_small))
  request <- cellucid_field_restore(viewer, field = list(key = "cell_type",
      source = "obs"))
  print(request)
  # cellucid_action_result(request) waits for its outcome.
  cellucid_stop(viewer)
}