解决内存越界导致的崩溃

modules/sinks/sink_plots/dialogplots.cpp

@@ -301,7 +301,10 @@ void DialogPlots::on_pushButton_reset_clicked()
 			if (min_y < new_min_y)	new_min_y = min_y,needup_y=true;
 			if (min_y > new_min_y * 1.2)	new_min_y = min_y,needup_y=true;
 
-
+			if (max_x >=1e9 || max_x <-1e9 || max_y >1e9 ||max_y < -1e9 || max_x - min_x <1e-8)
+				needup_x = false,needup_y = false;
+			if (min_y >=1e9 || min_y <-1e9 || min_x >1e9 ||min_x < -1e9|| max_y - min_y <1e-8)
+				needup_x = false,needup_y = false;
 
 			if (needup_x==true)
 				ax->setRange(new_min_x,new_max_x);
@@ -367,7 +370,7 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 			for (QList<QVector<double> >::iterator pit = avgList.begin();pit!=avgList.end();++pit)
 			{
 				for (int i=0;i<pts;++i)
-					fdata[i] += pit->at(i)/avgsz;
+					fdata[i] += pit->at(i)/(avgsz+1e-14);
 			}
 
 			double max_x = 0, max_y =  fdata[0];
@@ -382,7 +385,7 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 			{
 				SpectroWidget * ws = m_chat_spec[subid];
 				QVector<QPointF> vec_points;
-				for (int i=0;i<pts;i+=step)
+				for (int i=0;i<pts/channels;i+=step)
 				{
 					double x,y;
 					if (channels==1)
@@ -397,6 +400,9 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 					if (y<min_y)					min_y = y;
 
 				}
+				if (!(max_x >=1e9 || max_x <-1e9 || max_y >1e9 ||max_y < -1e9 || max_x - min_x <1e-8)||
+					(min_y >=1e9 || min_y <-1e9 || min_x >1e9 ||min_x < -1e9|| max_y - min_y <1e-8))
+				{
 					serials->replace(vec_points);
 					if (ws)
 					{
@@ -418,6 +424,7 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 
 
 					}
+				}
 
 
 			}
@@ -438,7 +445,8 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 					if (y<min_y)					min_y = y;
 
 				}
-
+				if (!(max_x >=1e9 || max_x <-1e9 || max_y >1e9 ||max_y < -1e9 || max_x - min_x <1e-8)||
+					(min_y >=1e9 || min_y <-1e9 || min_x >1e9 ||min_x < -1e9|| max_y - min_y <1e-8))
 					serials->replace(lstpts);
 			}
 
@@ -465,6 +473,10 @@ void DialogPlots::timerEvent(QTimerEvent *event)
 			if (min_y < new_min_y)	new_min_y = min_y,needup_y=true;
 			if (min_y > new_min_y * 1.2)	new_min_y = min_y,needup_y=true;
 
+			if (max_x >=1e9 || max_x <-1e9 || max_y >1e9 ||max_y < -1e9 || max_x - min_x <1e-8)
+				needup_x = false,needup_y = false;
+			if (min_y >=1e9 || min_y <-1e9 || min_x >1e9 ||min_x < -1e9|| max_y - min_y <1e-8)
+				needup_x = false,needup_y = false;
 
 			if (ui->checkBox_auto_reser->isChecked() || needup_x)
 			{