diff --git a/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.cc b/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.cc
index e564ee8..89e149e 100644
--- a/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.cc
+++ b/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.cc
@@ -28,6 +28,7 @@ namespace plot {
 HistoPlot::HistoPlot(AMDA::Parameters::ParameterManager& manager,
 		boost::shared_ptr<Panel> panel) :
 		PanelPlotOutput(manager, panel){
+			_plotted=false;
 
 }
 
@@ -271,8 +272,11 @@ void HistoPlot::configureSeriesAxis(double startDate, double stopDate) {
 			}
 
 			else if(pHistogramProperties->getHistogramType() == "histogram2d"){
-				
 				lZAxis->_used = true;
+				if(_panel->_page->_superposeMode){
+					_globalStartTime = startDate;
+					_globalStopTime = stopDate;
+				}
 			}
 		}
 	}
@@ -294,7 +298,7 @@ void HistoPlot::configureAxisLegend () {
 }
 
 void HistoPlot::histo1DUtils(double startDate, double stopDate, HistogramSeriesProperties &pHistogramProperties,
-								std::vector<std::pair<double,double>> &grid, double &xBinSize, bool resetCache){
+								std::vector<std::pair<double,double>> &grid, double &xBinSize){
 	// Get X, Y  axis.
 	boost::shared_ptr<Axis> lXAxis(_panel->getAxis(pHistogramProperties.getXAxisId()));
     boost::shared_ptr<Axis> lYAxis(_panel->getAxis(pHistogramProperties.getYAxisId()));
@@ -339,10 +343,12 @@ void HistoPlot::histo1DUtils(double startDate, double stopDate, HistogramSeriesP
 }
 
 void HistoPlot::drawHistogram(double startDate, double stopDate, std::string pParamId, 
-								HistogramSeriesProperties &pHistogramProperties, bool isSuperposed){
+								HistogramSeriesProperties &pHistogramProperties){
 	
-	//std::cout << std::fixed << std::setprecision(0) << startDate << " ------ " << stopDate << std::endl;
 	if(pHistogramProperties.getHistogramType() == "histogram1d"){
+		if(_panel->_page->_superposeMode && _plotted)
+			return;
+
 		std::vector<std::pair<double,double>> grid;
 		Color color = pHistogramProperties.getColor();
 		double xBinSize = 0;
@@ -350,13 +356,20 @@ void HistoPlot::drawHistogram(double startDate, double stopDate, std::string pPa
 		Range lYRange = lYAxis->getRange();
 
 		histo1DUtils(startDate, stopDate,pHistogramProperties, grid, xBinSize);
-
-		PanelPlotOutput::drawHistogram(startDate,stopDate,pParamId, pHistogramProperties);
 		
+		PanelPlotOutput::drawHistogram(startDate,stopDate,pParamId, pHistogramProperties);
 		PanelPlotOutput::drawHistogramBoxes(grid,color,xBinSize, lYRange.getMin());
+		_plotted = true;
 
 	}
 	else {
+		if(_panel->_page->_superposeMode && _plotted)
+			return;
+
+		if(_panel->_page->_superposeMode){
+			startDate= _globalStartTime;
+			stopDate = _globalStopTime;
+		}
 		// Get X, Y and Z axis.
 		boost::shared_ptr<Axis> lXAxis(_panel->getAxis(pHistogramProperties.getXAxisId()));
 		boost::shared_ptr<Axis> lYAxis(_panel->getAxis(pHistogramProperties.getYAxisId()));
@@ -418,9 +431,7 @@ void HistoPlot::drawHistogram(double startDate, double stopDate, std::string pPa
 			yValues = yData.getValues(pHistogramProperties.getIndex(), yStartIndex);
 		
 		zValues = zData.getValues(pHistogramProperties.getHistotypeProperties().getIndex(), zStartIndex);
-		for  (unsigned int i(0); i < xNbValues; ++i){
-			std::cout << xValues[i]<< std::endl;
-		}
+
 		for (unsigned int i(0); i < xBinNumber; ++i)
 		{
 			for (unsigned int j(0); j < yBinNumber; ++j)
@@ -451,8 +462,10 @@ void HistoPlot::drawHistogram(double startDate, double stopDate, std::string pPa
 		lZRange._extend = lZAxis->isExtended();
 		lZAxis->setRange(lZRange);
 
+		
 		PanelPlotOutput::drawHistogram(startDate,stopDate,pParamId, pHistogramProperties);
 		PanelPlotOutput::drawMatrix(matrixGrid, zMin, zMax, minValColor,maxValColor, lZAxis->_color._colorMapIndex, false);
+		_plotted = true;
 	}
 }
 
@@ -467,6 +480,7 @@ void HistoPlot::resetPlot()
 				
 				pHistogramProperties->getHistotypeProperties().getHisto1DFunction()->resetCache();
 			}
+			_plotted = false;
 		}
 	}
 	PanelPlotOutput::resetPlot();
diff --git a/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.hh b/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.hh
index 519c8c0..052bc63 100644
--- a/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.hh
+++ b/src/ParamOutputImpl/Plot/HistoPlot/HistoPlot.hh
@@ -65,13 +65,15 @@ public:
 	 */
 	virtual void resetPlot();
 
+	bool _plotted;
+
 protected:
 
 	void histo1DUtils(double startDate, double stopDate, HistogramSeriesProperties &pHistogramProperties,
-								std::vector<std::pair<double,double>> &grid, double &xBinSize, bool resetCache=FALSE);
+								std::vector<std::pair<double,double>> &grid, double &xBinSize);
 
 	virtual void drawHistogram(double startDate, double stopDate, std::string pParamId, 
-								HistogramSeriesProperties &pHistogramProperties, bool isSuperposed);
+								HistogramSeriesProperties &pHistogramProperties);
 
 
 	private:
@@ -84,6 +86,10 @@ protected:
 	//  * @brief Configure axis legend with paramInfo.
 	//  */
 	void configureAxisLegend();
+
+	double _globalStartTime;
+	double _globalStopTime;
+
 };
 
 } /* namespace plot */
diff --git a/src/ParamOutputImpl/Plot/PanelPlotOutput.cc b/src/ParamOutputImpl/Plot/PanelPlotOutput.cc
index 7c7bf82..0445036 100644
--- a/src/ParamOutputImpl/Plot/PanelPlotOutput.cc
+++ b/src/ParamOutputImpl/Plot/PanelPlotOutput.cc
@@ -1565,7 +1565,6 @@ namespace plot
 		// set color 
 		Color lInitialColor;
 		lInitialColor = changeColor(_pls, color, _panel->_page->_mode);
-		LOG4CXX_ERROR( gLogger, "FER --- " << (float)x0 << " -----  " << y0 );
 		PLFLT x[4], y[4];
 
 		x[0] = x0;
@@ -2668,7 +2667,7 @@ namespace plot
 				
 				LOG4CXX_DEBUG(gLogger, "Draw a Histogram 1D/2D for parameter " << parameter._originalParamId);
 				// Draw (configure) window for this series.
-				drawHistogram(startTime, stopTime, parameter._originalParamId, *(parameter.getHistogramSeriesProperties()), _panel->_page->_superposeMode);
+				drawHistogram(startTime, stopTime, parameter._originalParamId, *(parameter.getHistogramSeriesProperties()));
 				
 				ParameterData &data = (*_pParameterValues)[parameter.getHistogramSeriesProperties()->getParamId()];
 
@@ -2752,7 +2751,7 @@ namespace plot
 	}
 
 	void PanelPlotOutput::drawHistogram(double /*startDate*/, double /*stopDate*/, std::string /*pParamId*/, 
-										HistogramSeriesProperties &pHistogramProperties, bool /*isSuperposed*/){
+										HistogramSeriesProperties &pHistogramProperties){
 		
 		// Get X, Y and Z axis.
 		boost::shared_ptr<Axis> lXAxis(_panel->getAxis(pHistogramProperties.getXAxisId()));
@@ -2762,7 +2761,6 @@ namespace plot
 		Range lYRange = lYAxis->getRange();
 
  		// Range lZRange = getZAxisRange (pSeries, lZAxis);
-		std::cout << lXRange.getMin() << "  ---- " << lXRange.getMax() << "  ---- " << lYRange.getMin() << "  ---- " << lYRange.getMax() << std::endl;
 		PlWindow lPlWindow = PlWindow(lXRange.getMin(), lXRange.getMax(), lYRange.getMin(), lYRange.getMax());
 		// Calculate X and Y tick
 		TickConf lTickConf;
diff --git a/src/ParamOutputImpl/Plot/PanelPlotOutput.hh b/src/ParamOutputImpl/Plot/PanelPlotOutput.hh
index 08a8aea..08a59e7 100644
--- a/src/ParamOutputImpl/Plot/PanelPlotOutput.hh
+++ b/src/ParamOutputImpl/Plot/PanelPlotOutput.hh
@@ -418,7 +418,7 @@ protected:
 			SauvaudProperties& pSauvaud, int subIndex, int subsNumber, std::string opositeLegend);
 
 	virtual void drawHistogram(double startTime, double stopTime, std::string pParamId, 
-								HistogramSeriesProperties& HistogramSeriesProperties, bool isSuperposed);
+								HistogramSeriesProperties& HistogramSeriesProperties);
 
 	virtual void drawIntervals(double startDate, double stopDate, std::string pParamId,
 			IntervalsProperties& pIntervals);
--
libgit2 0.21.2