fixed infinite loop in plotter and insertion of un-initialized variables

source/RobotAPI/gui-plugins/SensorActorWidgetsPlugin/ArmarXPlotter/ArmarXPlotter.cpp

@@ -211,6 +211,7 @@ namespace armarx
             loggingDir = dialog->ui.editLoggingDirectory->text();
             ui.btnLogToFile->setChecked(false);
             curves.clear();
+            dataMap.clear();
             ui.qwtPlot->detachItems();
             clearBarList();
         }
@@ -632,10 +633,10 @@ namespace armarx
         for (; itmap != dataMaptoAppend.end(); ++itmap)
         {
             std::vector<TimeData>& dataVec = itmap->second;
-            int stepSize = dataVec.size() * 0.01;
+            int stepSize = std::max<int>(1, dataVec.size() * 0.01);
             int thresholdIndex = -1;
 
-            for (unsigned int i = 0; dataVec.size(); i += stepSize)
+            for (unsigned int i = 0; i < dataVec.size(); i += stepSize)
             {
                 // only delete if entries are older than 2*showninterval
                 // and delete then all entries that are older than showninterval.
@@ -694,7 +695,10 @@ namespace armarx
                 {
                     //                    ARMARX_IMPORTANT << "Variant: " << VariantPtr::dynamicCast(variants[i]);
                     VariantPtr var = VariantPtr::dynamicCast(variants[i]);
-
+                    if (!var->getInitialized())
+                    {
+                        continue;
+                    }
                     if (VariantType::IsBasicType(var->getType()))
                     {
                         dataMaptoAppend[DataFieldIdentifierPtr::dynamicCast(it->second[i])->getIdentifierStr()].push_back(TimeData(time, var));
@@ -737,7 +741,7 @@ namespace armarx
         }
         catch (...)
         {
-            handleExceptions();
+            ARMARX_WARNING << deactivateSpam(5) << GetHandledExceptionString();
         }
 
         return newData;