Fix error message about missing basemap-data-hires

Author: molinav

CHANGELOG.md

@@ -16,6 +16,10 @@ since version 1.3.0.
 - Upgrade development requirements for Python 3.10.
 - Move `doc` folder into `packages/basemap`.
 
+### Fixed
+- Fix error message when trying to load high- and full-resolution datasets
+  without installing the `basemap-data-hires` package.
+
 ## [1.3.0] - 2021-12-28
 
 ### Added

packages/basemap/src/mpl_toolkits/basemap/__init__.py

@@ -1223,11 +1223,10 @@ def _readboundarydata(self,name,as_polygons=False):
         read boundary data, clip to map projection region.
         """
         msg = dedent("""
-        Unable to open boundary dataset file. Only the 'crude', 'low',
-        'intermediate' and 'high' resolution datasets are installed by default.
-        If you are requesting a 'full' resolution dataset, you may need to
-        download and install those files separately
-        (see the basemap README for details).""")
+        Unable to open boundary dataset file. Only the 'crude', 'low' and
+        'intermediate' resolution datasets are installed by default. If you
+        are requesting a 'high' or 'full' resolution dataset, you need to
+        install the `basemap-data-hires` package.""")
         # only gshhs coastlines can be polygons.
         if name != 'gshhs': as_polygons=False
         try: