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Index exceeds the number of array elements. Index must not exceed 8.

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Prapthi
Prapthi 2023-2-3
回答： Swaraj 2023-2-10
function [dets_cluster] = clustering(dets,N_vfft,veloc_bin_norm,dis_thrs,rng_grid,agl_grid)
dets_cluster = [];
dets_num = size(dets, 1);
flag = zeros(1, dets_num); % for clusterng
[~, I] = sort(dets(:,4), 'descend');
for idx = 1:dets_num
% check the flag of current elemnt, if 1, skip comparing
if flag(I(idx))
continue
end
range_bin = dets(I(idx), 1);
veloc_bin = dets(I(idx), 2);
angle_bin = dets(I(idx), 3);
cur_det = dets(I(idx),:);
n_incluster = 1;
% check if the near point is within certain distance threshold of
% current element
for idx_nxt = idx+1:dets_num
if flag(I(idx_nxt))
continue
end
range_bin_diff = dets(I(idx_nxt), 1) - range_bin;
veloc_bin_diff = dets(I(idx_nxt), 2) - veloc_bin;
angle_bin_diff = dets(I(idx_nxt), 3) - angle_bin;
% wrap veloc_bin_diff around half Velocity FFT poiints
if abs(veloc_bin_diff) > N_vfft/2
veloc_bin_diff = N_vfft - abs(veloc_bin_diff);
end
if abs(range_bin_diff)<=dis_thrs(1) && abs(veloc_bin_diff/veloc_bin_norm)<=dis_thrs(2) ...
&& abs(angle_bin_diff)<=dis_thrs(3)
flag(I(idx_nxt)) = 1;
% update the location (range+angle) of center point
cur_det(1) = cur_det(1) + dets(I(idx_nxt), 1);
cur_det(3) = cur_det(3) + dets(I(idx_nxt), 3);
n_incluster = n_incluster + 1;
end
end
% update the flag of current element, and add it to the det_clustering
flag(I(idx)) = 1;
cur_det(1) = round(cur_det(1)/n_incluster);
cur_det(3) = round(cur_det(3)/n_incluster);
cur_det(5) = rng_grid(cur_det(1));
cur_det(7) = agl_grid(cur_det(3));
dets_cluster = [dets_cluster; cur_det];
end
I'm getting error in 49th line
Error in clustering (line 49)
cur_det(7) = agl_grid(cur_det(3));
Please help me to find this......
  3 个评论
显示 1更早的评论
Dyuman Joshi
Dyuman Joshi 2023-2-3
How can you call the 66th element of a matrix which only has 8 elements?
I suggest you can your code again and verify it is according to what you want to do.

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回答（1 个）

Swaraj
Swaraj 2023-2-10
To handle this error, you should better add proper checks as the function is getting agl_grid as input.
For eg. For the statement : cur_det(7) = agl_grid(cur_det(3));
You can add following conditions.
if cur_det(3) <= length(agl_grid)
cur_det(7) = agl_grid(cur_det(3));
else
% Add some code to handle this case
end

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