25
May
Deephaven's version 0.33 release introduced several new features and improvements. Two methods that have the potential to save users a lot of time are the new Rolling Formula update_by operations: rolling_formula_tick and rolling_formula_time. These operations support user-defined formulas, which can be used to calculate rolling aggregations over a specified window of rows or time. Support for user-defined formulas opens up a whole new world of versatility for update_by. This is exciting for a few reasons.First of all, support for user-defined formulas opens up a whole new world of versatility for update_by. Rather than being limited to a single update_by operation,…