I am trying to plot velocity vectors but they are not getting displayed in a single graph.How can I do that?

I have the following code and I want all my vectors to be displayed in a single graph.But my code gives different graph for every iteration.How can I make them to be displayed in single graph.

n_mat_cell=cell(nframes-1,1); % this stores the n vectors of each component in previous frame

for n=1:nframes-1

    n_mat_cell{n}=zeros(2, nclusters(n));    % 2 x number of components in previous frame

    for i=1:nclusters(n)

        [~,indx]=max(res_cell{n}(i,:));

        n_mat_cell{n}(1,i)=caCentroids{n+1}(1,indx)-caCentroids{n}(1,i);

        n_mat_cell{n}(2,i)=caCentroids{n+1}(2,indx)-caCentroids{n}(2,i);

        quiver( n_mat_cell{n}(1,i),n_mat_cell{n}(2,i))

    end
end

Answer 1

[Alexandra Harkai]

hold on
% your code here
hold off

Where 'hold on' will 'Retain current plot when adding new plots' according to the Documentation, 'hold off' will turn the hold state off so new plots will clear existing plots.