diff --git a/plugins/input/postgis/postgis.cpp b/plugins/input/postgis/postgis.cpp
index 60ebb4f55..290675c47 100644
--- a/plugins/input/postgis/postgis.cpp
+++ b/plugins/input/postgis/postgis.cpp
@@ -228,6 +228,11 @@ featureset_ptr postgis_datasource::features(const query& q) const
     return featureset_ptr(fs);
 }
 
+featureset_ptr postgis_datasource::features_at_point(coord2d const& pt) const
+{
+    return featureset_ptr();
+}
+
 const Envelope<double>& postgis_datasource::envelope() const
 {
     return extent_;
diff --git a/plugins/input/postgis/postgis.hpp b/plugins/input/postgis/postgis.hpp
index fb0605733..fd2d9cd4a 100644
--- a/plugins/input/postgis/postgis.hpp
+++ b/plugins/input/postgis/postgis.hpp
@@ -56,6 +56,7 @@ public:
     static std::string name();
     int type() const;
     featureset_ptr features(const query& q) const;
+    featureset_ptr features_at_point(coord2d const& pt) const;
     mapnik::Envelope<double> const& envelope() const;
     layer_descriptor const& get_descriptor() const;
     postgis_datasource(const parameters &params);
diff --git a/plugins/input/raster/raster_datasource.cpp b/plugins/input/raster/raster_datasource.cpp
index d4685917e..88cb104f4 100644
--- a/plugins/input/raster/raster_datasource.cpp
+++ b/plugins/input/raster/raster_datasource.cpp
@@ -92,3 +92,8 @@ featureset_ptr raster_datasource::features(query const& q) const
 }
 
 
+featureset_ptr raster_datasource::features_at_point(coord2d const&) const
+{
+    return featureset_ptr();
+}
+
diff --git a/plugins/input/raster/raster_datasource.hpp b/plugins/input/raster/raster_datasource.hpp
index e07e6b39e..05ad6b9b7 100644
--- a/plugins/input/raster/raster_datasource.hpp
+++ b/plugins/input/raster/raster_datasource.hpp
@@ -40,10 +40,11 @@ private:
     static std::string           name_;  
 public:
     raster_datasource(const parameters& params);
-    virtual            ~raster_datasource();
-    int                 type() const;
-    static std::string  name();
-    featureset_ptr      features(const query& q) const;
+    virtual ~raster_datasource();
+    int type() const;
+    static std::string name();
+    featureset_ptr features(const query& q) const;
+    featureset_ptr features_at_point(coord2d const& pt) const;
     mapnik::Envelope<double> const& envelope() const;
     layer_descriptor const& get_descriptor() const;
 private:
diff --git a/plugins/input/shape/shape.cpp b/plugins/input/shape/shape.cpp
index 3295fa2bf..75a3af592 100644
--- a/plugins/input/shape/shape.cpp
+++ b/plugins/input/shape/shape.cpp
@@ -148,9 +148,16 @@ featureset_ptr shape_datasource::features(const query& q) const
     filter_in_box filter(q.get_bbox());
     if (indexed_)
     {
-        return featureset_ptr(new shape_index_featureset<filter_in_box>(filter,shape_name_,q.property_names()));
+        return featureset_ptr
+            (new shape_index_featureset<filter_in_box>(filter,shape_name_,q.property_names()));
     }
-    return featureset_ptr(new shape_featureset<filter_in_box>(filter,shape_name_,q.property_names(),file_length_));
+    return featureset_ptr
+        (new shape_featureset<filter_in_box>(filter,shape_name_,q.property_names(),file_length_));
+}
+
+featureset_ptr shape_datasource::features_at_point(coord2d const& pt) const
+{
+    return featureset_ptr();
 }
 
 const Envelope<double>& shape_datasource::envelope() const
diff --git a/plugins/input/shape/shape.hpp b/plugins/input/shape/shape.hpp
index 7621056c7..a0edf3a85 100644
--- a/plugins/input/shape/shape.hpp
+++ b/plugins/input/shape/shape.hpp
@@ -41,6 +41,7 @@ public:
     int type() const;
     static std::string name();
     featureset_ptr features(const query& q) const;
+    featureset_ptr features_at_point(coord2d const& pt) const;
     const Envelope<double>& envelope() const;
     layer_descriptor const& get_descriptor() const;   
 private: