Creating an array within a for loop
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I have a plotting function which gets the points to plot from a for loop, i.e.
for i=1:length(rat2ind)
ind = A(:,1)==A(rat2ind(i),1); % pick all the rat locs for rat i
plot(A(ind,2),A(ind,3),randcolor);axis([-0.5 7.5, -0.5 7.5]) % plot rat i trajectory
hold on;
end
but instead of plotting the points, I'd like to save the points in an (n,2) array. I tried this:
for i=1:length(rat2ind)
ind = A(:,1)==A(rat2ind(i),1);
H=vertcat(H,[A(ind,1),A(ind,2),A(ind,3)]);
end
but it gave me a variable which is definitely not what I needed as its twice as large as my original data (the data, and my actual goal isn't really relevant here)
Thanks for any help
4 Comments
Cedric
on 27 Jan 2013
This line is suspicious to me:
ind = A(:,1)==A(rat2ind(i),1);
are you sure that it is not:
ind = A(:,1) == rat2ind(i) ;
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