sf_to_polygons: Convert an sf atlas geometry to the sf-optional polygon...
In ggseg.formats: Brain Atlas Data Structures for the 'ggsegverse' Ecosystem
View source: R/atlas_polygons.R
sf_to_polygons R Documentation
Convert an sf atlas geometry to the sf-optional polygon format
Description
Extracts coordinates from an sf-backed atlas geometry table and returns a
nested data.frame keyed by label. Each row carries a geometry list-column
containing the per-view, per-ring point coordinates needed to render with
graphics::polypath() (using the subgroup ring index for holes).
Usage
sf_to_polygons(sf_data)
Arguments
sf_data
An sf-class data.frame with columns label, view,
geometry (sfc of MULTIPOLYGON).
Value
A data.frame with one row per label and a geometry list-column.
Each nested element is a data.frame with columns view, x, y,
group (disjoint polygon piece within a label/view), subgroup
(ring within a piece; first = exterior, rest = holes).
Internal conversion primitive. For the atlas-level public API use
as_polygon_atlas() / atlas_polygons().
ggseg.formats documentation built on July 2, 2026, 5:07 p.m.
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View source: R/atlas_polygons.R
| sf_to_polygons | R Documentation |
Convert an sf atlas geometry to the sf-optional polygon format
Description
Extracts coordinates from an sf-backed atlas geometry table and returns a
nested data.frame keyed by label. Each row carries a geometry list-column
containing the per-view, per-ring point coordinates needed to render with
graphics::polypath() (using the subgroup ring index for holes).
Usage
sf_to_polygons(sf_data)
Arguments
sf_data |
An sf-class data.frame with columns |
Value
A data.frame with one row per label and a geometry list-column.
Each nested element is a data.frame with columns view, x, y,
group (disjoint polygon piece within a label/view), subgroup
(ring within a piece; first = exterior, rest = holes).
Internal conversion primitive. For the atlas-level public API use
as_polygon_atlas() / atlas_polygons().
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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