implement the PintIndex

docs/examples/plotting.ipynb

@@ -108,7 +108,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "monthly_means.pint.sel(\n",
+    "monthly_means.sel(\n",
     "    lat=ureg.Quantity(4350, \"angular_minute\"),\n",
     "    lon=ureg.Quantity(12000, \"angular_minute\"),\n",
     ")"

docs/whats-new.rst

@@ -6,6 +6,8 @@ What's new
 ------------------
 - drop support for python 3.9 (:pull:`266`)
   By `Justus Magin <https://github.com/keewis>`_.
+- create a `PintIndex` to allow units on indexed coordinates (:pull:`163`, :issue:`162`)
+  By `Justus Magin <https://github.com/keewis>`_ and `Benoit Bovy <https://github.com/benbovy>`_.
 
 0.4 (23 Jun 2024)
 -----------------

pint_xarray/__init__.py

@@ -5,6 +5,7 @@
 from . import accessors, formatting, testing  # noqa: F401
 from .accessors import default_registry as unit_registry
 from .accessors import setup_registry
+from .index import PintIndex
 
 try:
     __version__ = version("pint-xarray")
@@ -21,4 +22,5 @@
     "testing",
     "unit_registry",
     "setup_registry",
+    "PintIndex",
 ]