SpecularPlot: check sigmas

GUI/View/PlotSpecular/SpecularPlot.cpp

@@ -103,8 +103,7 @@ void SpecularPlot::connectItems()
 {
     // data
     for (auto item : specularDataItems())
-//      qInfo()  connect(item, &DataItem::datafieldChanged, this, &SpecularPlot::setPlot,
-        connect(item, &DataItem::datafieldChanged, this, &SpecularPlot::initPlot,
+        connect(item, &DataItem::datafieldChanged, this, &SpecularPlot::setPlot,
                 Qt::UniqueConnection);
 
     // units
@@ -142,13 +141,15 @@ void SpecularPlot::initPlot()
         m_custom_plot->graph()->setScatterStyle(
             QCPScatterStyle(item->scatter(), item->scatterSize()));
 
-        // create error bars for ALL graphs. only for some items they will be filled and used
-        QCPErrorBars* errorBars = new QCPErrorBars(m_custom_plot->xAxis, m_custom_plot->yAxis);
-        m_errorbar_map.insert(item, errorBars);
-        errorBars->removeFromLegend();
-        errorBars->setAntialiased(false);
-        errorBars->setDataPlottable(m_custom_plot->graph());
-        errorBars->setPen(QPen(QColor(180,180,180)));
+        // create error bars
+        if(item->getDatafield()->hasErrorSigmas()) {
+            QCPErrorBars* errorBars = new QCPErrorBars(m_custom_plot->xAxis, m_custom_plot->yAxis);
+            m_errorbar_map.insert(item, errorBars);
+            errorBars->removeFromLegend();
+            errorBars->setAntialiased(false);
+            errorBars->setDataPlottable(m_custom_plot->graph());
+            errorBars->setPen(QPen(QColor(180,180,180)));
+        }
     }
 
     m_custom_plot->xAxis->setTickLabelFont(