add option to keep extent as-is when setting a geometry-frame

eomaps/eomaps.py

@@ -5450,7 +5450,7 @@ def refetch_wms_on_size_change(self, *args, **kwargs):
             """Set the behavior for WebMap services on axis or figure size changes."""
             refetch_wms_on_size_change(*args, **kwargs)
 
-    def _set_gdf_path_boundary(self, gdf):
+    def _set_gdf_path_boundary(self, gdf, set_extent=True):
         geom = gdf.to_crs(self.crs_plot).unary_union.boundary
 
         if geom.geom_type == "MultiLineString":
@@ -5471,17 +5471,17 @@ def _set_gdf_path_boundary(self, gdf):
         path = mpath.Path(vertices, codes)
 
         self.ax.set_boundary(path, self.ax.transData)
+        if set_extent:
+            x0, y0 = np.min(vertices, axis=0)
+            x1, y1 = np.max(vertices, axis=0)
 
-        x0, y0 = np.min(vertices, axis=0)
-        x1, y1 = np.max(vertices, axis=0)
-
-        self.set_extent([x0, x1, y0, y1], gdf.crs)
+            self.set_extent([x0, x1, y0, y1], gdf.crs)
 
         if multi:
             # TODO apply fix for multi-path geometries (see cartopy PR #2362)
             _fix_multipath_GeoSpine()
 
-    def set_frame(self, rounded=0, gdf=None, **kwargs):
+    def set_frame(self, rounded=0, gdf=None, set_extent=True, **kwargs):
         """
         Set the properties of the map boundary and the background patch.
 
@@ -5553,7 +5553,7 @@ def set_frame(self, rounded=0, gdf=None, **kwargs):
         self.ax.spines["geo"].update(kwargs)
 
         if gdf is not None:
-            self._set_gdf_path_boundary(self._handle_gdf(gdf))
+            self._set_gdf_path_boundary(self._handle_gdf(gdf), set_extent=set_extent)
 
         elif rounded:
             assert (