Automatically convert lonlat to xy when tiles=True

hvplot/converter.py

@@ -46,7 +46,7 @@
 from holoviews.plotting.util import process_cmap
 from holoviews.operation import histogram, apply_when
 from holoviews.streams import Buffer, Pipe
-from holoviews.util.transform import dim
+from holoviews.util.transform import dim, lon_lat_to_easting_northing
 from pandas import DatetimeIndex, MultiIndex
 
 from .backend_transforms import _transfer_opts_cur_backend
@@ -587,6 +587,21 @@ def __init__(
         autorange=None,
         **kwds,
     ):
+        if geo and tiles and not crs and not projection:
+            # tiles without requiring geoviews/cartopy
+            #  check if between -180 and 360 and lat between -90 and 90
+            min_x = np.min(data[x])
+            max_x = np.max(data[x])
+            min_y = np.min(data[y])
+            max_y = np.max(data[y])
+            if -180 < min_x < 360 and -180 < max_x < 360 and -90 < min_y < 90 and -90 < max_y < 90:
+                data = data.copy()
+                lons, lats = data[x], data[y]
+                easting, northing = lon_lat_to_easting_northing(lons, lats)
+                data[x] = easting
+                data[y] = northing
+                geo = False
+
         # Process data and related options
         self._redim = fields
         self.use_index = use_index