Index: /trunk/BNC/src/bncmap_svg.cpp
===================================================================
--- /trunk/BNC/src/bncmap_svg.cpp	(revision 4633)
+++ /trunk/BNC/src/bncmap_svg.cpp	(revision 4634)
@@ -9,4 +9,5 @@
 #include <qwt_plot_canvas.h>
 #include <qwt_plot_panner.h>
+#include <qwt_plot_zoomer.h>
 #include <qwt_plot_magnifier.h>
 #include <qwt_plot_renderer.h>
@@ -22,6 +23,10 @@
   _mapPlot = new QwtPlot();
 
-  (void)new QwtPlotPanner(_mapPlot->canvas());
-  (void)new QwtPlotMagnifier(_mapPlot->canvas());
+  _mapPlot->setAxisScale(QwtPlot::xBottom, -180.0, 180.0);
+  _mapPlot->setAxisScale(QwtPlot::yLeft,    -90.0,  90.0);
+
+  //  (void)new QwtPlotPanner(_mapPlot->canvas());
+  //  (void)new QwtPlotMagnifier(_mapPlot->canvas());
+  (void)new QwtPlotZoomer(_mapPlot->canvas());
 
   _mapPlot->canvas()->setFocusPolicy(Qt::WheelFocus);