Debug test_image

Author: seisman

pygmt/tests/test_image.py

@@ -15,5 +15,5 @@
 def test_image():
     "Place images on map"
     fig = Figure()
-    fig.image(TEST_IMG, D="x0/0+w1i", F="+pthin,blue")
+    fig.image(TEST_IMG, D="x0/0+w1i", F="+pthin,blue", V='d')
     return fig