DOC/Gallery example "Inset": Migrate frame settings to the new Frame/Axis syntax (#4508)

Author: yvonnefroehlich

examples/gallery/embellishments/inset.py

@@ -9,25 +9,28 @@
 
 # %%
 import pygmt
-from pygmt.params import Box, Position
+from pygmt.params import Axis, Box, Position
 
 fig = pygmt.Figure()
-# Create the primary figure, setting the region to Madagascar, the land color to
-# "brown", the water to "lightblue", the shorelines width to "thin", and adding a frame
-fig.coast(region="MG+r2", land="brown", water="lightblue", shorelines="thin", frame="a")
-# Create an inset, placing it in the Top Left (TL) corner with a width of 3.5 cm and
-# x- and y-offsets of 0.2 cm. The clearance is set to 0, and the border is "gold" with a
+# Create the primary figure, setting the region to Madagascar
+fig.basemap(region="MG+r2", projection="M12c", frame=Axis(annot=True))
+# Set the land color to "brown", the water color to "lightblue", and the shorelines
+# width to "thin"
+fig.coast(land="brown", water="lightblue", shorelines="thin")
+
+# Create an inset, placing it in the Top Left (TL) corner with a width of 3.5 cm and x-
+# and y-offsets of 0.2 cm. The clearance is set to 0, and the border is "gold" with a
 # pen thickness of 1.5 points.
 with fig.inset(
     position=Position("TL", offset=0.2),
     width=3.5,
     clearance=0,
     box=Box(pen="1.5p,gold"),
 ):
-    # Create a figure in the inset using coast. This example uses the azimuthal
-    # orthogonal projection centered at 47E, 20S. The land color is set to "gray" and
-    # Madagascar is highlighted in "red3".
-    fig.coast(
-        region="g", projection="G47/-20/?", land="gray", water="white", dcw="MG+gred3"
-    )
+    # Create a map within the inset. This example uses the azimuthal orthogonal
+    # projection centered at 47 E, 20 S. The question mark is required for the
+    # automatic size determination by PyGMT
+    fig.basemap(region="g", projection="G47/-20/?", frame=0)
+    # Madagascar is highlighted in "red3"
+    fig.coast(land="gray", water="white", dcw="MG+gred3")
 fig.show()