Expand the outline of spatial annotations

Expands or shrinks the outer outline of a spatial annotation.

expandSpatialAnnotation(object, id, expand, new_id = FALSE, overwrite = FALSE)

Arguments

object

An object of class SPATA2 or, in case of S4 generics, objects of classes for which a method has been defined.

id

Character value. The ID of the spatial annotation of interest.

expand

Distance measure with which to expand the border. Negative values shrink the outline.

new_id

Character value or FALSE. If character, the resulting spatial annotation is stored under a new ID.

overwrite

Logical value. Must be TRUE to allow overwriting.

Value

The updated input object, containing the added, removed or computed results.

See also

smoothSpatialAnnotation(), shiftSpatialAnnotation(), SpatialAnnotation

Examples

library(SPATA2)
library(tidyverse)

data("example_data")

object <- loadExampleObject("UKF275T")

plotImage(object) + ggpLayerSpatAnnOutline(object, ids = "vessel1", line_color = "red")
plotSpatialAnnotations(object, "vessel1")

object <- expandSpatialAnnotation(object, id = "vessel1", expand = "50um", new_id = "vessel1_exp")

plotSpatialAnnotations(object, ids = c("vessel1", "vessel1_exp"))