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Read ROIs from a GeoJSON file

Usage

at_read_geojson(
  path,
  layer_name = NULL,
  level = 0L,
  flip_y = FALSE,
  height = NULL,
  call = rlang::caller_env()
)

Arguments

path

Path to a GeoJSON file.

layer_name

Layer name for the imported ROIs; taken from the features' layer property when NULL.

level

Integer level to record when a feature has no level property.

flip_y

Logical; invert the y-axis on read. Default FALSE.

height

Image height in pixels, required when flip_y = TRUE.

call

The calling environment, for error reporting.

Value

A named list of annot_layer objects (one per distinct layer property), or a single annot_layer when layer_name is supplied.