Plot: bands

lib/Plot.cpp

@@ -183,6 +183,20 @@ PlotHLine::PlotHLine(const double y)
     setCommand(strFrom(y));
 }
 
+// PlotHBand constructor ///////////////////////////////////////////////////////
+PlotBand::PlotBand(const double xMin, const double xMax, const double yMin,
+                   const double yMax, const double opacity)
+{
+    setCommand("'< printf \"%e %e\\n%e %e\\n%e %e\\n%e %e\\n%e %e\\n\" "
+               + strFrom(xMin) + " " + strFrom(yMin) + " "
+               + strFrom(xMax) + " " + strFrom(yMin) + " "
+               + strFrom(xMax) + " " + strFrom(yMax) + " "
+               + strFrom(xMin) + " " + strFrom(yMax) + " "
+               + strFrom(xMin) + " " + strFrom(yMin)
+               + "' u 1:2 w filledcurves closed fs solid " + strFrom(opacity)
+               + " noborder");
+}
+
 // PlotFunction constructor ////////////////////////////////////////////////////
 PlotFunction::PlotFunction(const DoubleFunction &function, const double xMin,
                            const double xMax, const unsigned int nPoint)

lib/Plot.hpp

@@ -106,6 +106,16 @@ public:
     virtual ~PlotHLine(void) = default;
 };
 
+class PlotBand: public PlotObject
+{
+public:
+    // constructor
+    PlotBand(const double xMin, const double xMax, const double yMin,
+             const double yMax, const double opacity = 0.15);
+    // destructor
+    virtual ~PlotBand(void) = default;
+};
+
 class PlotFunction: public PlotObject
 {
 public: