Moving point with fixed distance and random direction
10 ビュー (過去 30 日間)
古いコメントを表示
Hi guys. I am doing simulation of user distribution. I have generated some random points to represent the users.
But now, I want to make the points move so that the users are walking with constant speed.
I want to make moving points animiation with
- Fixed distance (distance between point A and point B = point B to point C)
- Random direction
And I want to record all the coordinates of points. Thank you.
2 件のコメント
回答 (1 件)
Neeraj Rajpurohit
2021 年 4 月 7 日
DISCLAIMER: These are my own views and in no way depict those of MathWorks.
Greeings,
The following code might help you get started. It shows 10 users moving in random directions with a constant velocity. Note that I used ‘findobj’ and ‘set’ functions to get update plot coordinates. Please find the relevant documentation link below.
clear;
hold off;
box on;
users = 10;
xValues = uint8(rand(1,users) * 100);
yValues = uint8(rand(1,users) * 100);
xdValues = uint8(rand(1,users) * 100);
ydValues = uint8(rand(1,users) * 100);
rt = scatter(yValues, xValues, 'blue');
xlabel('size');
ylabel('size');
axis([0 100 0 100]);
step_size = 1;
while 1
y_t = double(ydValues)-double(yValues);
x_t = double(xdValues)-double(xValues);
x = zeros(1,users);
y = zeros(1,users);
for i=1:users
if(x_t(i) == 0)
y(i) = double(yValues(i))+ sign(y_t(i)) * step_size;
else
m = y_t(i)./x_t(i);
sine = m./sqrt(1+m.^2);
cosine = 1./sqrt(1+m.^2);
x(i) = double(xValues(i)) + cosine.*sign(x_t(i))*step_size;
y(i) = double(yValues(i))+ (abs(sine) .* sign(y_t(i))) * step_size;
end
end
xValues = x;
yValues = y;
d = sqrt(y_t.^2 + x_t.^2);
h = findobj(rt);
pause(.23);
prevX = get(h,'XData');
prevY = get(h,'YData');
set(h,'XData',xValues);
set(h,'YData',yValues);
end
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Scatter Plots についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!