If true is set, Step contains a value greater
than or equal to 1, and GroupBy set to
DataPilotFieldGroupBy::DAYS, grouping is performed on ranges
of days (see descriptions for
XDataPilotFieldGrouping::createDateGroup for more details
about day grouping).
specifies the size of the ranges for numeric or day grouping.
Example: With HasAutoStart set to false,
Start set to 2, and Step set to 3,
the first group will contain all values greater than or equal to 2 and
less than 5. The second group will contain all values greater than or
equal to 5 and less then 8, and so on.
specifies the named groups in this field if there are some.
The returned object is an instance of
DataPilotFieldGroups. The collection of groups can be modified by inserting,
removing, replacing, or renaming single groups or item names in the
groups. When writing back this struct containing such a changed
collection of groups to the DataPilotField::GroupInfo
property, the modified grouping settings are applied at the DataPilot
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