syncWith

This example shows how to move a local egocentric map and sync it with a larger world map. This process emulates a vehicle driving in an environment and getting updates on obstacles in the new areas.

Load example maps. Create an occupancy map from the ternaryMap.

load exampleMaps.mat
map = occupancyMap(ternaryMap);
show(map)

Create a smaller local map.

mapLocal = occupancyMap(ternaryMap(end-200:end,1:200));
show(mapLocal)

Follow a path planned in the world map and update the local map as you move your local frame.

Specify path locations and plot on the map.

path = [100 100
        100 250
        200 250
        300 250];
show(map)
hold on
plot(path(:,1),path(:,2))
hold off

Create a loop for moving between points by the map resolution. Divide the difference between points by the map resolution to see how many incremental moves you can make.

for i = 1:length(path)-1
    moveAmount = (path(i+1,:)-path(i,:))/map.Resolution;
    for j = 1:abs(moveAmount(1)+moveAmount(2))
        moveValue = sign(moveAmount).*map.Resolution;
        move(mapLocal,moveValue,"MoveType","relative")
        syncWith(mapLocal,map) 
        show(mapLocal)
        drawnow limitrate
    end
end