Plotting multiple object trajectories together with their identity
4 views (last 30 days)
Show older comments
Hi, I have a matfile 'a' which have the time in the first column, identity of objects from the first row of second column till the end and their X and Y coordinates.
What i want to do is to plot the trajectories of all these objects together like a movie so that i can keep track of the objects along with their identity displayed.
I am able to plot the trajectory for a single choosen object as shown below. Can anyone give an idea ?
Any help to solve this will be appreciated.
%% Loading mat file and keep time and coordinates of individual objects in a cell
load('a.mat')
final_plot_mat_missing_part = a(:,:);
Ucolumnnames_fpm = unique(final_plot_mat_missing_part(1,2:end));
finaL_plot_matrix_cell = cell(1,numel(Ucolumnnames_fpm));
for ii = 1:numel(finaL_plot_matrix_cell) %numel returns the number of elements.
idx_time_needed_f = final_plot_matrix(1,:) == Ucolumnnames_fpm(ii);
finaL_plot_matrix_cell{ii} = [final_plot_mat_missing_part(1:end,3),final_plot_mat_missing_part(1:end,idx_time_needed_f)];
end
Accepted Answer
darova
on 5 May 2019
I always use simple plot() and pause() to animate something
clc, clear, cla
load a.mat
np = 2; %(size(a,2)-1)/2; % number of particles
t = a(2:end,1);
hold on
% trajectories
for i = 2:2:np*2
plot3(t,a(2:end,i),a(2:end,i+1),'COlor',rand(1,3));
end
view(45,45)
xlabel('TIME')
ylabel('X AXIS')
zlabel('Y AXIS')
h = zeros(1,np); % particle handles
for i = 730:50:size(a,1) % frames
k = 0;
t = a(i,1); % time of current frame
for j = 2:2:np*2 % particles
x = a(i,j);
y = a(i,j+1);
k = k + 1;
h(k) = plot3(t,x,y,'or');
end
drawnow
pause(0.1)
delete(h)
end
hold off
Also read about VideoWriter() if you want to create a video
8 Comments
More Answers (0)
See Also
Categories
Find more on Vehicle Scenarios in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!