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Last update: February 19, 2014

 

Custom Mathematical Functions

GeneXproTools allows you to design your own functions and then add them to your function set. Custom functions are called Dynamic UDFs or DDFs in GeneXproTools and they are written in JavaScript.



Custom functions are extremely powerful and interesting tools as they are treated exactly like the built-in functions of GeneXproTools and therefore can be used to model all kinds of relationships between variables or complex expressions. For instance, you can design a DDF so that it will model the square of the difference between two expressions, that is, DDF = [(expression 1) - (expression 2)] * [(expression 1) - (expression 2)], where the value of each expression will depend on the context of the DDF in the expression tree. A note of caution, though, although extremely useful, DDFs decrease considerably the speed of the algorithm and therefore we advise you to choose your functions from the wide set of GeneXproTools built-in functions.




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