Could anyone help me to solve the issue.

Question

jaah navi 2019-5-8

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https://ww2.mathworks.cn/matlabcentral/answers/460837-could-anyone-help-me-to-solve-the-issue

评论： Bhaskar R 2019-5-9

采纳的回答： Bhaskar R

在 MATLAB Online 中打开

code:The below code executes and gives the result.

But i want to view swarm_pos for all particles in workspace.

When I run the code it displays only with respect to the second time of for loop result in workspace.

could anyone please help me on this.

particles=2;
dimensions=2;
PPP=[1,2;
    3,4;
    5,6;
    7,8];
centroids=zeros(1,particles);
for particle=1:particles
    P=numel(particle);
    users=size(PPP,1);
    centroids(particle)= randi(users,1,P)
    fprintf('\nCentroids=%d\n',centroids(particle))
    swarm_pos =rand(centroids(particle),dimensions,P)
end

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Walter Roberson 2019-5-8

See also https://www.mathworks.com/matlabcentral/answers/460692-could-anyone-help-me-to-solve-the-following-issue

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Answer 1

Bhaskar R 2019-5-8

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https://ww2.mathworks.cn/matlabcentral/answers/460837-could-anyone-help-me-to-solve-the-issue#answer_374034

编辑：Bhaskar R 2019-5-8

在 MATLAB Online 中打开

Since the matrix size assigning to the variable "swarm_pos" is deifferent for each iteration, initialize the matrix as cell array class matrix, then you can get the variable as you required in the workspace

Modify your code as below

particles=2;
dimensions=2;
PPP=[1,2;
    3,4;
    5,6;
    7,8];
centroids=zeros(1,particles);
% Initialize your variable as cell array type as your required dimention either (1xparticles) or (particlesx1)
swarm_pos = cell(1,particles);
for particle=1:particles
    P=numel(particle);
    users=size(PPP,1);
    centroids(particle)= randi(users,1,P)
    fprintf('\nCentroids=%d\n',centroids(particle))
    swarm_pos{particle} =rand(centroids(particle),dimensions,P)    %  stores array values for each iteration 
end

Access you data as

swarm_pos{1}, swarm_pos{2}

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jaah navi 2019-5-9

在 MATLAB Online 中打开

ok.It works

I then continued the code as follows:

particles=2;
dimensions=2;
PPP=[1,2;
    3,4;
    5,6;
    7,8];
centroids=zeros(1,particles);
swarm_pos = cell(1,particles);
for particle=1:particles
    P=numel(particle);
    users=size(PPP,1);
    centroids(particle)= randi(users,1,P)
    fprintf('\nCentroids=%d\n',centroids(particle))
    swarm_pos{particle} =rand(centroids(particle),dimensions,P)    %  stores array values for each iteration 
end
for T=1:iterations 
  for particle=1:particles
     P=numel(particle);
     distances=zeros(users,centroids(particle),P)
     for centroid=1:centroids(particle)
         distance=zeros(users(particle),1);
      for user=1:users
           distance(user,1)=norm(swarm_pos(centroid,:,P)-PPP(user,:))
       end
         distances(:,centroid,P)=distance
       end
end
end