Getting "Index exceeds array bounds" for line 103 but I do not see how the index number is more than the elements. Any help would be awesome!

for i = 2:length(output)
    if strcmp(output{i,6},'Yes') || strcmp(output{i,6},'Cancel')
        ns(i) = output{i,1};
        if ns(i)>7
            t(i,:) = zeros(1,7);
            a(i,:) = zeros(1,7);
            p(i,:) = zeros(1,7);
            w(i,:) = zeros(1,7);
        else
            t(i,:) = padarray(output{i,2},[0,7-ns(i)],0,'post');
            a(i,:) = padarray(output{i,3},[0,7-ns(i)],0,'post');
            p(i,:) = padarray(output{i,4},[0,7-ns(i)],0,'post');
            w(i,:) = padarray(output{i,5},[0,7-ns(i)],0,'post');
        end
        if strcmp(output{i,6},'Yes')
            quality(i) = 1;
        else
            quality(i) = 2;
        end
    end
end

>> DataAnalysisPipeline

Index exceeds array bounds.

Error in DataAnalysisPipeline (line 103)

if strcmp(output{i,6},'Yes') || strcmp(output{i,6},'Cancel')

Answer 1

[Voss]

Assuming output is an n-by-6 cell array, length(output) will be n if n >= 6 and 6 otherwise (i.e., if n < 6). Note that length() gives the size of the array in the longest dimension.

output = cell(10,6);
length(output)

ans = 10

output = cell(4,6);
length(output)

ans = 6

If you want to iterate over rows of output, you can use for i = 2:size(output,1)

output = cell(10,6);
size(output,1)

ans = 10

output = cell(4,6);
size(output,1)

ans = 4

Another possibility for why this error is happening would be that output has at least 6 rows (so that using length() is ok in this case) but fewer than 6 columns.