Interactive vector layers retain fractional screen coordinates by default, reducing stair-step artifacts in curves, arrowheads and donut borders.
Interactive curves now use 96 points by default and preserve their vertices.
Automatic arrowheads keep a 14-pixel length across zoom levels and adapt their width to the trajectory weight. Use flow_arrow_pixels to adjust this length, or flow_arrow_size to retain lengths in projected map units.
Arrowheads follow the actual curved trajectory, and the line ends at the head base instead of extending beyond the point towards the donut center.
Added smooth_rendering = FALSE to request Leaflet’s standard projection.
Maps without a tile provider no longer show a spurious null base layer.
DonutMap 0.1.0
CRAN release: 2026-06-08
Initial CRAN submission.
Added static donut maps with ggplot2.
Added interactive donut maps with leaflet.
Added sf donut polygon generation.
Added straight and curved origin-destination flow geometries.
