Fix warnings in examples

Fix example

Author: dstansby

galleries/examples/axisartist/demo_axis_direction.py

@@ -20,7 +20,10 @@ def setup_axes(fig, rect):
     """Polar projection, but in a rectangular box."""
     # see demo_curvelinear_grid.py for details
     grid_helper = GridHelperCurveLinear(
-        Affine2D().scale(np.pi/180., 1.) + PolarAxes.PolarTransform(),
+        (
+            Affine2D().scale(np.pi/180., 1.) +
+            PolarAxes.PolarTransform(apply_theta_transforms=False)
+        ),
         extreme_finder=angle_helper.ExtremeFinderCycle(
             20, 20,
             lon_cycle=360, lat_cycle=None,

galleries/examples/axisartist/demo_curvelinear_grid.py

@@ -54,7 +54,8 @@ def curvelinear_test2(fig):
 
     # PolarAxes.PolarTransform takes radian. However, we want our coordinate
     # system in degree
-    tr = Affine2D().scale(np.pi/180, 1) + PolarAxes.PolarTransform()
+    tr = Affine2D().scale(np.pi/180, 1) + PolarAxes.PolarTransform(
+        _apply_theta_transforms=False)
     # Polar projection, which involves cycle, and also has limits in
     # its coordinates, needs a special method to find the extremes
     # (min, max of the coordinate within the view).

galleries/examples/axisartist/demo_floating_axes.py

@@ -54,7 +54,7 @@ def setup_axes2(fig, rect):
     With custom locator and formatter.
     Note that the extreme values are swapped.
     """
-    tr = PolarAxes.PolarTransform()
+    tr = PolarAxes.PolarTransform(_apply_theta_transforms=False)
 
     pi = np.pi
     angle_ticks = [(0, r"$0$"),
@@ -99,7 +99,8 @@ def setup_axes3(fig, rect):
     # scale degree to radians
     tr_scale = Affine2D().scale(np.pi/180., 1.)
 
-    tr = tr_rotate + tr_scale + PolarAxes.PolarTransform()
+    tr = tr_rotate + tr_scale + PolarAxes.PolarTransform(
+        _apply_theta_transforms=False)
 
     grid_locator1 = angle_helper.LocatorHMS(4)
     tick_formatter1 = angle_helper.FormatterHMS()

galleries/examples/axisartist/demo_floating_axis.py

@@ -22,7 +22,8 @@
 def curvelinear_test2(fig):
     """Polar projection, but in a rectangular box."""
     # see demo_curvelinear_grid.py for details
-    tr = Affine2D().scale(np.pi / 180., 1.) + PolarAxes.PolarTransform()
+    tr = Affine2D().scale(np.pi / 180., 1.) + PolarAxes.PolarTransform(
+        _apply_theta_transforms=False)
 
     extreme_finder = angle_helper.ExtremeFinderCycle(20,
                                                      20,

galleries/examples/axisartist/simple_axis_pad.py

@@ -21,7 +21,8 @@ def setup_axes(fig, rect):
     """Polar projection, but in a rectangular box."""
 
     # see demo_curvelinear_grid.py for details
-    tr = Affine2D().scale(np.pi/180., 1.) + PolarAxes.PolarTransform()
+    tr = Affine2D().scale(np.pi/180., 1.) + PolarAxes.PolarTransform(
+        _apply_theta_transforms=False)
 
     extreme_finder = angle_helper.ExtremeFinderCycle(20, 20,
                                                      lon_cycle=360,