OpenFormula Groups
One important aspect of OpenFormula is that it provides a predefined set of "groups"; the most important of these groups are small, medium, and large:
- The small group includes a little over 100 functions, including functions for trigonometry, database, finance, and statistics. The vast majority of spreadsheet documents are ably handled by applications that implement the "small" group. At least one PDA application (SheetToGo) has this level of capability, and wikiCalc added the functions in the small group specifically to meet the set defined by OpenFormula.
- The medium group includes all the capabilities of the small group, and adds about 100 more functions.
- The large group includes all the capabilities of the medium group, adding around 130 more functions, as well as capabilities such as complex numbers.
It is expected that users will often request implementations that meet a particular group, based on their needs.
Read more about this topic: Open Formula
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