Working on plot speed improvements

src/uas/PxQuadMAV.cc

@@ -56,7 +56,6 @@ void PxQuadMAV::receiveMessage(LinkInterface* link, mavlink_message_t message)
             // FIXME Kind of a hack to load data from disk
             mavlink_image_triggered_t img;
             mavlink_msg_image_triggered_decode(&message, &img);
-            qDebug() << "IMAGE AVAILABLE:" << img.timestamp;
             emit imageStarted(img.timestamp);
         }
         break;

src/ui/linechart/LinechartPlot.h

@@ -219,7 +219,7 @@ public:
     static const int SCALE_BEST_FIT = 1;
     static const int SCALE_LOGARITHMIC = 2;
 
-    static const int DEFAULT_REFRESH_RATE = 50; ///< The default refresh rate is 25 Hz / every 100 ms
+    static const int DEFAULT_REFRESH_RATE = 100; ///< The default refresh rate is 10 Hz / every 100 ms
     static const int DEFAULT_PLOT_INTERVAL = 1000 * 8; ///< The default plot interval is 15 seconds
     static const int DEFAULT_SCALE_INTERVAL = 1000 * 8;
 

src/ui/linechart/LinechartWidget.cc

@@ -142,7 +142,7 @@ LinechartWidget::LinechartWidget(int systemid, QWidget *parent) : QWidget(parent
     //connect(this, SIGNAL(plotWindowPositionUpdated(int)), scrollbar, SLOT(setValue(int)));
     //connect(scrollbar, SIGNAL(sliderMoved(int)), this, SLOT(setPlotWindowPosition(int)));
 
-    updateTimer->setInterval(300);
+    updateTimer->setInterval(updateInterval);
     connect(updateTimer, SIGNAL(timeout()), this, SLOT(refresh()));
     readSettings();
 }
@@ -376,6 +376,7 @@ void LinechartWidget::appendData(int uasId, const QString& curve, const QString&
 
 void LinechartWidget::refresh()
 {
+    setUpdatesEnabled(false);
     QString str;
     // Value
     QMap<QString, QLabel*>::iterator i;
@@ -427,6 +428,7 @@ void LinechartWidget::refresh()
         str.sprintf("% 8.3e", activePlot->getVariance(l.key()));
         l.value()->setText(str);
     }
+    setUpdatesEnabled(true);
 }
 
 

src/ui/linechart/LinechartWidget.h

@@ -150,7 +150,7 @@ protected:
     QTimer* updateTimer;
     LogCompressor* compressor;
     QCheckBox* selectAllCheckBox;
-    static const int updateInterval = 400; ///< Time between number updates, in milliseconds
+    static const int updateInterval = 1000; ///< Time between number updates, in milliseconds
 
     static const int MAX_CURVE_MENUITEM_NUMBER = 8;
     static const int PAGESTEP_TIME_SCROLLBAR_VALUE = (MAX_TIME_SCROLLBAR_VALUE - MIN_TIME_SCROLLBAR_VALUE) / 10;