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ggmapcn 0.3.1

IMPROVEMENTS

• Update the bundled provincial dataset to the latest local Tianditu source. Its name field now contains the previous English name_en values; Chinese names are in name_cn, and gb contains source codes. Existing filters and joins using the previous fields need to be updated.
• Update the bundled boundary dataset, including the two Guangdong–Macao boundary segments and Chinese boundary type names in name_cn.
• Rebuild the bundled China_mask.gpkg from the provincial polygons so the mask matches the bundled provincial dataset.
• Store downloaded map data in the user cache instead of the installed package; continue to reuse files from the previous user data directory.
• Provide the package logo as a PNG file for HTML help and reference manuals.
• Add options to annotation_graticule() for line transparency and label formatting, font, transparency, and rotation, while preserving existing positional arguments and the alpha argument passed through ....
• Clarify the package description and default dataset delivery, and render Markdown in the help documentation.

ggmapcn 0.3.0

NEW FEATURES

• New function: annotation_graticule()
  Adds a projection-aware global graticule system with customizable spacing, labeling, and automatic antimeridian handling.

MAJOR IMPROVEMENTS

• Major redesign of geom_world()
  Fully rebuilt global basemap system using world polygons, coastlines, and boundaries; improved antimeridian handling; more reliable behavior under complex projections; and clearer, more consistent styling controls.

• Major redesign of the external data workflow (check_geodata())
  The data-management system has been rewritten to meet CRAN size limits and improve reliability. Required datasets are now located or retrieved automatically using a priority search (local directories → package extdata → user cache), with retry, resume, and mirror fallbacks. The data-retrieval helper returns NA when files cannot be obtained. Functions using default map datasets call this workflow internally.

IMPROVEMENTS

• More robust CRS parsing, including reliable extraction of lon_0 from PROJ strings.
• Better stability with coord_sf(), especially for global projections and shifted central meridians.
• Updated documentation and examples, including usage of the new world dataset (world_countries.rda, world_coastlines.rda, world_boundaries.rda).
• More consistent rendering across projections such as Robinson, Mollweide, and shifted longitude systems.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
Health stats visible at Monitor.