Fix point cloud export

Author: pierotofy

app/api/tiler.py

@@ -524,15 +524,15 @@ def post(self, request, pk=None, project_pk=None, asset_type=None):
         epsg = request.data.get('epsg')
         color_map = request.data.get('color_map')
         hillshade = request.data.get('hillshade')
-        resample = request.data.get('resample')
+        resample = request.data.get('resample', 0)
 
         if formula == '': formula = None
         if bands == '': bands = None
         if rescale == '': rescale = None
         if epsg == '': epsg = None
         if color_map == '': color_map = None
         if hillshade == '': hillshade = None
-        if resample == '': resample = None
+        if resample == '': resample = 0
 
         expr = None