Fix continents=0

Packages/vcs/vcs/VTKPlots.py

@@ -755,7 +755,10 @@ def onClosing(self, cell):
                 plot.onClosing(cell)
 
     def plotContinents(self, wc, projection, wrap, vp, priority, **kargs):
-        contData = vcs2vtk.prepContinents(self.canvas._continentspath())
+        continents_path = self.canvas._continentspath()
+        if continents_path is None:
+            return (None, 1, 1)
+        contData = vcs2vtk.prepContinents(continents_path)
         contMapper = vtk.vtkPolyDataMapper()
         contMapper.SetInputData(contData)
         contActor = vtk.vtkActor()

testing/vcs/CMakeLists.txt

@@ -1016,13 +1016,19 @@ cdat_add_test(test_vcs_init_open_sizing
   "${PYTHON_EXECUTABLE}"
   ${cdat_SOURCE_DIR}/testing/vcs/test_vcs_init_open_sizing.py
 )
-# Rename baseline
+## Rename baseline
 cdat_add_test(test_vcs_matplotlib_colormap
   "${PYTHON_EXECUTABLE}"
   ${cdat_SOURCE_DIR}/testing/vcs/test_vcs_matplotlib_colormap.py
   ${BASELINE_DIR}/test_vcs_matplotlib_colormap.png
 )
 
+cdat_add_test(test_vcs_no_continents
+  "${PYTHON_EXECUTABLE}"
+  ${cdat_SOURCE_DIR}/testing/vcs/test_vcs_no_continents.py
+  ${BASELINE_DIR}/test_vcs_no_continents.png
+)
+
 
 add_subdirectory(vtk_ui)
 add_subdirectory(editors)

testing/vcs/test_vcs_no_continents.py

@@ -0,0 +1,38 @@
+import cdms2
+import os
+import sys
+import vcs
+
+# Load the clt data:
+dataFile = cdms2.open(os.path.join(vcs.sample_data, "clt.nc"))
+clt = dataFile("clt")
+clt = clt(latitude=(-90.0, 90.0), longitude=(-180., 175.), squeeze=1,
+          time=('1979-1-1 0:0:0.0', '1988-12-1 0:0:0.0'))
+
+# Initialize canvas:
+canvas = vcs.init()
+canvas.setantialiasing(0)
+canvas.setbgoutputdimensions(1200,1091,units="pixels")
+canvas.drawlogooff()
+
+t1 = vcs.createtemplate()
+t1.scale(.5, "y")
+t1.move(-.15, "y")
+t2 = vcs.createtemplate(source=t1.name)
+t2.move(.5, 'y')
+
+canvas.plot(clt, t1, continents=0, bg=True)
+canvas.plot(clt, t2, continents=1, bg=True)
+
+# Load the image testing module:
+testingDir = os.path.join(os.path.dirname(__file__), "..")
+sys.path.append(testingDir)
+import checkimage
+
+# Create the test image and compare:
+baseline = sys.argv[1]
+testFile = "test_vcs_no_continents.png"
+canvas.png(testFile)
+ret = checkimage.check_result_image(testFile, baseline,
+                                    checkimage.defaultThreshold)
+sys.exit(ret)