fixed some plotting issues

modified step detection

sensors/imu/TurnDetectionPlot.h

@@ -104,7 +104,10 @@
 				gp1 << "set arrow 1 from screen 0.85,0.85 to screen " << ax << "," << ay << "\n";
 				gp1 << "set object 2 circle at screen 0.85,0.85 radius screen 0.1 \n";
 
-				gp1.draw(multiplot);
+				//gp1.draw(plotGyroRaw);	// raw only
+				gp1.draw(plotGyroFix);	// fixed only
+				//gp1.draw(multiplot);	// both
+
 				gp1.flush();
 
 			}