Fix resetting of extent with local files (#155) (#156)

Co-authored-by: Joris Van den Bossche <[email protected]>

Author: darribas

contextily/plotting.py

@@ -177,19 +177,21 @@ def add_basemap(
                     }
                 ]
                 image, img_transform = riomask(raster, window, crop=True)
+                extent = left, right, bottom, top
             else:
                 # Read full
                 image = np.array([band for band in raster.read()])
                 img_transform = raster.transform
+                bb = raster.bounds
+                extent = bb.left, bb.right, bb.bottom, bb.top 
             # Warp
             if (crs is not None) and (raster.crs != crs):
                 image, bounds, _ = _warper(
                     image, img_transform, raster.crs, crs, resampling
                 )
-            else:
-                bounds = raster.bounds
+                extent = bounds.left, bounds.right, bounds.bottom, bounds.top
             image = image.transpose(1, 2, 0)
-            extent = bounds.left, bounds.right, bounds.bottom, bounds.top
+
     # Plotting
     if image.shape[2] == 1:
         image = image[:, :, 0]

tests/test_ctx.py

@@ -294,13 +294,7 @@ def test_add_basemap():
     loc = ctx.Place(SEARCH, path="./test2.tif", zoom_adjust=ADJUST)
     ctx.add_basemap(ax, url="./test2.tif", reset_extent=True)
 
-    raster_extent = (
-        -11740803.981631357,
-        -11701668.223149346,
-        4852910.488797556,
-        4892046.247279563,
-    )
-    assert_array_almost_equal(raster_extent, ax.images[0].get_extent())
+    assert_array_almost_equal(subset, ax.images[0].get_extent())
     assert ax.images[0].get_array().sum() == 8440966
     assert ax.images[0].get_array().shape == (126, 126, 3)
     assert_array_almost_equal(ax.images[0].get_array().mean(), 177.22696733014195)