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Multiple List Comparator
Explanation of the Symbols
A – B - subtraction of list B from list A
A ∩ B - intersection of lists A and B
A ∪ B - union of lists A and B
Multiple List Comparator is a free online tool made to compare two or more item lists, find the shared items (dataset intersections), and output both tabular and graphical results. It will generate a customizable Venn diagram for up to five lists and diplay a matrix of all pairwise intersections.
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The app can use a tabular dataset or individual data lists as the input. In the first case, click the sentence "Click here for tabular data input" and provide the data as a csv/tsv file or by pasting them in the dedicated text area. In the latter case, the required number of empty list forms has to be prepared up front. This can be done by filling the number of lists to be prepared in the "Number of lists" field followed by clicking the "Set" button (all existing lists will be discarded). To add a list form to an existing set of forms, click the large plus button located just after the last list form.
To apply any changes made in the settings or in input data, click the "Compare" button.
The app expects an input in the form of simple item lists i.e. with one item per line. If the source data are to be loaded from files, the files should be plain text files (no formatting) containing one item per each line or comma-separated items.
The app can import a tabular dataset wherein the list items are organized column-wise and separated with delimiters in each row. The delimiter can be one of the characters tab, comma or semicolon and has to be properly chosen before reading the data into the app with the "Read Data" button. You can directly copy - paste data from Microsoft Excel or other spreadsheet programs. Choose tab as the delimiter in such cases. If the source data are to be loaded from a file, the file should be a plain text file containing delimiter-separated values. After clicking the "Read Data" button, the values should get properly distributed into individual input lists. If not, check the delimiter choice and appearance of the data. The problem may also be caused by a presence of additional text lines preceding the data. Such lines have to be removed manually.