set zorder=2 in coastlines (issue #188)

Author: jswhit

test/test_gaussian.py

@@ -19,7 +19,7 @@
 def test_gaussian():
     fig = plt.figure()
     ax = plt.axes(projection=ccrs.PlateCarree(central_longitude=0))
-    ax.coastlines()
+    ax.coastlines(zorder=2)
     ax.contourf(lons,lats,data,15)
     # plot location of every 4th grid point
     plt.scatter(lons[::4,::4].ravel(),lats[::4,::4].ravel(),1,marker='o',color='k',zorder=10)

test/test_reglatlon.py

@@ -22,7 +22,7 @@
 def test_reglatlon1():
     fig = plt.figure()
     ax = plt.axes(projection=ccrs.PlateCarree(central_longitude=0))
-    ax.coastlines()
+    ax.coastlines(zorder=2)
     ax.contourf(lons,lats,data,15,cmap=plt.cm.hot_r)
     plt.title('%s Global Lat/Lon Grid' % grb.name)
     return fig
@@ -31,7 +31,7 @@ def test_reglatlon1():
 def test_reglatlon2():
     fig = plt.figure()
     ax = plt.axes(projection=ccrs.PlateCarree(central_longitude=0))
-    ax.coastlines()
+    ax.coastlines(zorder=2)
     ax.contourf(lons,lats,data2,15)
     plt.title('%s Global Lat/Lon Grid' % grb2.name)
     return fig
@@ -44,7 +44,7 @@ def test_reglatlon3():
     fig = plt.figure()
     ax = plt.axes(projection=ccrs.PlateCarree(central_longitude=0))
     ax.set_extent([lon1,lon2,lat1,lat2],crs=ccrs.PlateCarree())
-    ax.coastlines()
+    ax.coastlines(zorder=2)
     ax.contourf(lonsubset,latsubset,datsubset,15,cmap=plt.cm.hot_r)
     plt.title('%s Regional Lat/Lon Grid' % grb.name)
     return fig