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  • Webinar: Introduction to GREL

    Martin Magdinier  |  25 November 2014

    OpenRefine logoTransformations are to Refine what formulas are to Excel, except rather than being stored in a cell, they are applied once to the entire dataset. GREL (for General Refine Expression Language) is the main language supported and let you write powerful yet simple query to filter and transform your data. You will use transformation function when the action available through Refine menu are not enough to do want you want.

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