Grouping selector - pdf2Data Documentation

Groping is the first selector for postprocessing of extracted data available in iText pdf2Data. 

Grouping is used to structure the output by combining the detected data fields into groups.

This selector allows the grouping of extracted values in the output file, depending on their y coordinate related to the y coordinate of extracted values of another data field that exists in the template.

To get insight on how it works, please see the Grouping of extracted values article