Setting up parasite model

11 次查看（过去 30 天）
Patrick Carey
Patrick Carey 2018-10-10
回答： Star Strider 2018-10-10
I am trying to set up a parasite model that represents a grid of 200*200 cells.
In this grid there has to be 20 parasites and 20 food at random locations. I used this code:
fxPos=randi(200,20,1); fyPos=randi(200,20,1);
food=[fxPos fyPos];
pxPos=randi(200,20,1); pyPos=randi(200,20,1); pLifespan=randi(15,20,1); parasites=[pxPos pyPos pLifespan];
What I am stuck on is how can I make certain that no two particles end up on the same position on the grid.

请先登录，再回答此问题。

回答（1 个）

Star Strider
Star Strider 2018-10-10
One way you can check to be certain that no two positions are the same is to be certain that the positions are unique:
foodRows = 0;
while foodRows < 20
fxPos=randi(200,20,1);
fyPos=randi(200,20,1);
food=[fxPos fyPos];
[Ufood,~,ix] = unique(food, 'rows');
foodRows = size(Ufood,1)
end
That may be the easiest (and likely most efficient) option.

类别

在 Help Center 和 File Exchange 中查找有关 Particle & Nuclear Physics 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by