How to use for loop rather than nesting if loop
1 回表示 (過去 30 日間)
古いコメントを表示
I want to use this code to subtract one value from each number in the histogram when all have been selected to find the new number with zero counts. This code worked (since there are two if loops with one nested) for the first two times 1 is subtracted from cdiff, but then returns the error 'Unbalanced or unexpected parenthesis or bracket.' : %check if Cdiff is empty:
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= cdiff_counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
end
else
fprintf('C_diff is %d\n', C_diff);%
end
Replacing the first 'if' with 'for' returns 'Unbalanced or unexpected parenthesis or bracket.'
How can I get this to occur until C_diff is no longer an empty array?
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
else
fprintf('C_diff is %d\n', C_diff);%
end
Best regards,
Alex
2 件のコメント
採用された回答
Jan
2018 年 1 月 27 日
編集済み: Jan
2018 年 1 月 27 日
while isempty(C_diff)
cdiff_counts = counts - 1;
C_diff = find(cdiff_counts == 0);
end
It looks like C_diff contains positive values initially, maybe only integers. Then this is more efficient:
minValue = min(counts); % [EDITED]
C_diff = find(C_diff = minValue);
3 件のコメント
Jan
2018 年 1 月 27 日
I had a typo in the min() call. I assume, it is much cheaper. If you provide some meaningful inputs data and the wanted result, I could even test my suggestions.
その他の回答 (0 件)
参考
カテゴリ
Help Center および File Exchange で Loops and Conditional Statements についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!