Fix getPixel for single channel sources.

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Change Log
 
+## Unreleased
+
+### Bug Fixes
+- Fix getPixel for single channel sources ([875](../../pull/875))
+
 ## 1.14.5
 
 ### Improvements

large_image/tilesource/base.py

@@ -2411,7 +2411,10 @@ def getPixel(self, includeTileRecord=False, **kwargs):
                 pixel['tile'] = tile
             img = tile['tile']
             if img.size[0] >= 1 and img.size[1] >= 1:
-                pixel.update(dict(zip(img.mode.lower(), img.load()[0, 0])))
+                if len(img.mode) > 1:
+                    pixel.update(dict(zip(img.mode.lower(), img.load()[0, 0])))
+                else:
+                    pixel.update(dict(zip([img.mode.lower()], [img.load()[0, 0]])))
         return pixel
 
 

test/test_source_base.py

@@ -157,6 +157,7 @@ def testSourcesTilesAndMethods(source, filename):
     assert ts.getInternalMetadata() is not None
     assert ts.getOneBandInformation(1) is not None
     assert len(ts.getBandInformation()) >= 1
+    assert ts.getPixel(region=dict(left=0, top=0)) is not None
     # Histograms are too slow to test in this way
     #  assert len(ts.histogram()['histogram']) >= 1
     #  assert ts.histogram(onlyMinMax=True)['min'][0] is not None