Paradigm4/load_tools — pull request #1 by tdanford (2014-12-05 04:00:17+00:00)
Title: Added a "format_extract" UDF.

The format_extract function takes three arguments:
1. the FORMAT field from a VCF
2. the sample field from a VCF
3. the name of an attribute listed in the FORMAT field

All three are strings.

It returns a string which is the value of the attribute, from the sample field, whose name matches the third argument.