I'm assuming that you want the co-ordinates of the trajectory generated by the 'smoothtrajectory' function. Although I couldn't find a direct way to get the data from the 'drivingscenario' object or the 'vehicle' object, I was able to extract the data from the figure created by plotting the scenario. Here's some sample code to show this:
%Example scenario
scenario = drivingScenario('SampleTime',0.05);
roadcenters = [0 0; 24.2 27.7; 50 30];
lspec = lanespec(2);
road(scenario,roadcenters,'Lanes',lspec);
v = vehicle(scenario,'ClassID',1);
waypoints = [2.6 1.0; 23.6 24.9; 45.5 28.6];
speed = [9 8 9];
smoothTrajectory(v,waypoints,speed)
%Plotting the scenario
plot(scenario,'Waypoints','on','RoadCenters','on');
a = gca; %getting current axis
a.Children %Getting all the graphics plotted on the axes
The 'Line' object called 'WaylineActor1' is the generated trajectory.
%Extracting coordinates from the 'Line' object
a.Children(1)
xData = a.Children(1).XData
yData = a.Children(1).YData
Hope this helps!
