Can we use custom markers to plot trajectory

Is there a way I can use a figure as custom marker to represent the trajectory of an unamanned aerial system. I also need it to represent the orientation of the UAS at any point on the trajectory.

I have attached examples that I found in some papers.

Answer 1

[Milan Padhiyar]

Hello Sourav,

Please find here example code to use the custom marker in the MATLAB plots.

x = [1 2 3 4 5 6 7 8 9 10]; % x data
y = [2 7 8 4 10 3 5 9 6 1]; % y data

marker = imread('aeroplane.png'); % read image file
markerSize = [1,1];    % The size of marker is expressed in axis units, NOT in pixels

x_L = x - markerSize(1)/2; % left edge of marker
x_R = x + markerSize(1)/2; % right edge of marker
y_B = y - markerSize(2)/2; % bottom edge of marker
y_T = y + markerSize(2)/2; % top edge of marker

for index = 1:length(x)
    
    imagesc([x_L(index) x_R(index)], [y_T(index) y_B(index)], marker) % warn range of the marker. It is reverse Top to Bottom. Not Bottom to Top
    hold on
    
end

axis([0 11 0 11]) % set axis limit
axis equal 

ax = gca;
ax.YDir = 'normal'; % reverse the y axis

plot(x,y)
grid minor;
grid on;

We can use "imread" function to import the marker and for plotting we can use "imagesc" and "plot" functions.

Thanks

[Ravi]

but the image is not changing the direction, how can we get moving marker with this image ??

[Sam Chak]

I guess you want use a custom 3D object marker where its orientation (attitude) is relative to a fixed reference frame (XYZ). In that case, you must also provide the attitude data that correspond to the position data points.

Since the 3D object is relatively large, you should only plot the markers every few position points.

[Ravi]

thanks, could you provide some example like for the question which was asked for aircraft