clear isotope ratio bar graph

src/gui/xic_view/xic_box/xicbox.cpp

@@ -34,7 +34,6 @@
 #include "../../project_view/projectwindow.h"
 #include <pappsomspp/xic/detection/xicdetectionzivy.h>
 #include <pappsomspp/exception/exceptionnotpossible.h>
-#include <qcustomplot.h>
 
 
 
@@ -206,8 +205,11 @@ void XicBox::setXic(std::vector< pappso::XicSp> xic_sp_list) {
     qDebug() << "XicBox::setXic plot" ;
     ui->xic_widget->plot();
 
-    QCPBars * observed_intensity = new QCPBars(ui->histo_widget->xAxis, ui->histo_widget->yAxis2);
-    observed_intensity->setName("XIC area");
+    if (_isotope_ratio_graph_observed_intensity != nullptr) {
+        _isotope_ratio_graph_observed_intensity->clearData();
+    }
+    _isotope_ratio_graph_observed_intensity = new QCPBars(ui->histo_widget->xAxis, ui->histo_widget->yAxis2);
+    _isotope_ratio_graph_observed_intensity->setName("XIC area");
     //ui->histo_widget->yAxis2->setLabel("intensity");
 
 
@@ -230,11 +232,11 @@ void XicBox::setXic(std::vector< pappso::XicSp> xic_sp_list) {
         i++;
     }
 
-    observed_intensity->setPen(QPen(QColor("red")));
+    _isotope_ratio_graph_observed_intensity->setPen(QPen(QColor("red")));
     //_graph_peak_surface_list.back()->setScatterStyle(QCPScatterStyle::ssDot);
     // observed_intensity->setBrush(QBrush(QColor(170, 255, 0, 0)));
 
-    observed_intensity->setData(ticks, observed_intensity_data);
+    _isotope_ratio_graph_observed_intensity->setData(ticks, observed_intensity_data);
 
     ui->histo_widget->yAxis2->setVisible(true);
     ui->histo_widget->yAxis2->setRange(0, sum);

src/gui/xic_view/xic_box/xicbox.h

@@ -37,6 +37,7 @@
 #include "../xicwindow.h"
 #include <pappsomspp/xic/xic.h>
 #include <pappsomspp/peptide/peptidenaturalisotopelist.h>
+#include <qcustomplot.h>
 
 namespace Ui {
 class XicBox;
@@ -70,6 +71,8 @@ private:
     pappso::XicSp _xic_sp;
     std::vector<pappso::XicWidget *> _xic_widget_list;
     std::vector<pappso::XicPeak> _xic_peak_match_list;
+    
+    QCPBars * _isotope_ratio_graph_observed_intensity= nullptr;
 };