2 files changed, 8 insertions, 0 deletions
diff --git a/gr-qtgui/lib/plot_raster.cc b/gr-qtgui/lib/plot_raster.cc
index 20a2b7e56c..bccff88f10 100644
--- a/gr-qtgui/lib/plot_raster.cc
+++ b/gr-qtgui/lib/plot_raster.cc
@@ -312,6 +312,12 @@ QImage PlotTimeRaster::renderImage(const QwtScaleMap &xMap,
   return image;
 }
 
+QwtInterval
+PlotTimeRaster::interval(Qt::Axis ax) const
+{
+  return d_data->data->interval(ax);
+}
+
 /*!
   \brief Draw the raster
 
diff --git a/gr-qtgui/lib/plot_raster.h b/gr-qtgui/lib/plot_raster.h
index 2e914e5753..e46dea568b 100644
--- a/gr-qtgui/lib/plot_raster.h
+++ b/gr-qtgui/lib/plot_raster.h
@@ -65,6 +65,8 @@ public:
 
     virtual int rtti() const;
 
+    virtual QwtInterval interval(Qt::Axis ax) const;
+  
     virtual void draw(QPainter *p,
 		      const QwtScaleMap &xMap,
 		      const QwtScaleMap &yMap,