Hausdorff Distance

    I was trying to think of some different ways of highlighting similar sets of data in QlikView & under 'similarity metrics' found Hausdorff Distance in an old text book I have (https://www.amazon.co.uk/Nonlinear-workbook-algorithms-expression-programming/dp/9814335789, although I found a more comprehensible write up on the web here, http://cgm.cs.mcgill.ca/~godfried/teaching/cg-projects/98/normand/main.html).

     

    In scripting the calculation actually drops out quite neatly, so I have attached sample using some data I found on a resource for teachers in New Zealand;

    http://new.censusatschool.org.nz/resource/multivariate-data-sets/

     

    I am not sure anything particularly insightful drops out of that particular set of data & wonder if something built in to QlikView would show similar relationships, or that scripting (rather than being calculated on the fly, depending on selections) limits it, but I think an interesting concept.