From 4c444d0082e51f5b13b8a40c233b25c45c74d12c Mon Sep 17 00:00:00 2001
From: Jiri Drbalek <jiri.drbalek@firma.seznam.cz>
Date: Wed, 14 Feb 2018 13:56:04 +0000
Subject: [PATCH] Respect raster_has_nodata

---
 plugins/input/gdal/gdal_featureset.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/plugins/input/gdal/gdal_featureset.cpp b/plugins/input/gdal/gdal_featureset.cpp
index 979f9e587..6b03a8592 100644
--- a/plugins/input/gdal/gdal_featureset.cpp
+++ b/plugins/input/gdal/gdal_featureset.cpp
@@ -586,8 +586,14 @@ feature_ptr gdal_featureset::get_feature(mapnik::query const& q)
             }
             mapnik::raster_ptr raster = std::make_shared<mapnik::raster>(feature_raster_extent, intersect, image, filter_factor);
             // set nodata value to be used in raster colorizer
-            if (nodata_value_) raster->set_nodata(*nodata_value_);
-            else raster->set_nodata(raster_nodata);
+            if (nodata_value_)
+            {
+                raster->set_nodata(*nodata_value_);
+            }
+            else if (raster_has_nodata)
+            {
+                raster->set_nodata(raster_nodata);
+            }
             feature->set_raster(raster);
         }
         // report actual/original source nodata in feature attributes