Migrate frame settings to the Frame/Axis class [frame="lrbt+gxxx+txxx"] (#4581)

Author: seisman

examples/gallery/symbols/patterns.py

@@ -29,7 +29,7 @@
 
 # %%
 import pygmt
-from pygmt.params import Pattern
+from pygmt.params import Frame, Pattern
 
 # A list of patterns that will be demonstrated.
 # By default, a pattern is plotted in black and white with a resolution of 300 dpi.
@@ -52,7 +52,7 @@
 fig.basemap(
     region=[0, 10, 0, 12],
     projection="X18c/10c",
-    frame="rlbt+glightgray+tBit and Hachure Patterns",
+    frame=Frame(axes="rlbt", fill="lightgray", title="Bit and Hachure Patterns"),
 )
 y = 11
 for pattern in patterns:

examples/tutorials/advanced/legends.py

@@ -81,7 +81,9 @@
 # Use the ``box`` parameter for adjusting the box around the legend.
 
 fig = pygmt.Figure()
-fig.basemap(region=[-5, 5, -5, 5], projection="X5c", frame="rltb+glightgray")
+fig.basemap(
+    region=[-5, 5, -5, 5], projection="X5c", frame=Frame(axes="rltb", fill="lightgray")
+)
 
 fig.plot(x=0, y=0, style="c0.25c", fill="orange", label="orange circle")
 fig.plot(x=1, y=0, style="t0.3c", fill="pink", pen="black", label="pink triangle")
@@ -90,7 +92,9 @@
 fig.legend(position=Position("TL", offset=(0.3, 0.2)), box=True)
 
 fig.shift_origin(xshift="w+1c")
-fig.basemap(region=[-5, 5, -5, 5], projection="X5c", frame="rltb+glightgray")
+fig.basemap(
+    region=[-5, 5, -5, 5], projection="X5c", frame=Frame(axes="rltb", fill="lightgray")
+)
 
 fig.plot(x=0, y=0, style="c0.25c", fill="orange", label="orange circle")
 fig.plot(x=1, y=0, style="t0.3c", fill="pink", pen="black", label="pink triangle")