[processing] explisitly load outputs as raster or vector depending

on the output type. Don't rely on extension or other indirect attributes

python/plugins/processing/gui/Postprocessing.py

@@ -71,9 +71,11 @@ def handleAlgorithmResults(alg, context, feedback=None, showResults=True):
                         name = os.path.basename(out.value)
                     else:
                         name = out.description
+
+                    isRaster = True if isinstance(out, OutputRaster) else False
                     dataobjects.load(out.value, name, alg.crs,
-                                     RenderingStyles.getStyle(alg.id(),
-                                                              out.name))
+                                     RenderingStyles.getStyle(alg.id(), out.name),
+                                     isRaster)
             except Exception:
                 QgsMessageLog.logMessage("Error loading result layer:\n" + traceback.format_exc(), 'Processing', QgsMessageLog.CRITICAL)
                 wrongLayers.append(out.description)

python/plugins/processing/tools/dataobjects.py

@@ -102,7 +102,7 @@ def getSupportedOutputRasterLayerExtensions():
     return allexts
 
 
-def load(fileName, name=None, crs=None, style=None):
+def load(fileName, name=None, crs=None, style=None, isRaster=False):
     """Loads a layer/table into the current project, given its file.
     """
 
@@ -116,8 +116,7 @@ def load(fileName, name=None, crs=None, style=None):
     if name is None:
         name = os.path.split(fileName)[1]
 
-    suffix = os.path.splitext(fileName)[1][1:]
-    if suffix in getSupportedOutputRasterLayerExtensions():
+    if isRaster:
         qgslayer = QgsRasterLayer(fileName, name)
         if qgslayer.isValid():
             if crs is not None and qgslayer.crs() is None: