所有组合的Matlab Loop [英] Matlab Loop of all combinations

问题描述

我是Matlab的新手，这似乎超出了我的范围.提前感谢您的帮助.

Im new to Matlab and this seems to be beyond me. Appreciate the help and thanks in advance.

1. 基本上，我有一个带有列标题的多列数据集.列号可能因数据集而异.
2. 需要遍历所有列组合(例如A + B，A + C .... B + C，B + D ...等)并运行公式(在这种情况下，它是一个相关公式但随后可能是另一个公式).
3. 如果特定组合返回"true"，则将返回该对的列标题.

如果能为我指明正确的方向，将不胜感激.

Would appreciate if you could point me in the right direction.

谢谢.

推荐答案

使用nchoosek获取所有成对的列:

Use nchoosek to get all pairs of columns:

pairs_columns = nchoosek(1:m, 2);
pairs = {};

for pair = 1:size(pairs_columns,1)
    flag = your_correlation_test(data(:,pairs_columns(pair,1)), data(:,pairs_columns(pair,2)));
    if flag
        pairs{end+1,1} = data_header(pairs_columns(pair,1));
        pairs{end,2} = data_header(pairs_columns(pair,2));      %// Note that you don't need end+1 anymore as the previous line will have already increased the number of rows in the vector
    end
end

m是您的列数

your_correlation_test是您的返回布尔结果的测试函数

your_correlation_test is your test function that returns a Boolean result

data是您的数据集(我假设您可以按列号编制索引?)

data is your dataset (which I'm assuming you can index by column number?)

data_header是占位符，用于根据列号从数据集中获取标题的任何正确方法.抱歉，我对Matlab中的数据集不是很熟悉

data_header is a place holder for whatever the correct way to get the header is from your dataset based on the column number. Sorry I'm not very familiar with datasets in Matlab

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