update docs

Author: flaport

pyproject.toml

@@ -14,7 +14,7 @@ dev = [
   "scikit-learn>=1.6.1",
   "tmm>=0.2.0",
   "towncrier>=24.0.0",
-  "ty>=0.0.1a11"
+  "ty>=0.0.20"
 ]
 docs = [
   "altair>=5.5.0",

src/sax/interpolation.py

@@ -116,8 +116,10 @@ def to_df(
         obj: an xarray or a sax.SType object.
         target_name: the name of the target column
             in the dataframe (ignored when obj is an SType).
-        kwargs: the coordinates of the SType values axes
-            (ignored when obj is an xarray).
+        kwargs: the coordinates of the SType values axes. You probably want to supply
+            'wl' or 'f' here, i.e. the coordinates you supplied to generate the SType.
+            The kwargs are ignored when the object is an xarray as the coordinates are
+            already embedded in the xarray in that case.
     """
     if isinstance(obj, xr.DataArray):
         xarr = obj