bar#
- swordfish.function.bar()#
bar can group X based on the length specified by interval.
- 参数:
X (Constant) -- An integral/temporal scalar or vector.
interval (Constant) --
An integral/DURATION type scalar greater than 0 or a vector of the same length as X. When interval is of type DURATION, the following time units are supported (case-sensitive): w, d, H, m, s, ms, us, ns.
备注
As time units y and M are not supported in interval, to group X by year or month, convert the data format of X with function month or year. Specify the interval as an integer for calculation. You can refer to Example 2.
closed (Constant, optional) -- A string which can take 'left' (default) or 'right', indicating whether an element of X that is divisible by interval is the left boundary (the first element of the group) or the right boundary (the last element of the group) of a group, by default DFLT.
- 返回:
A vector with the same length as X.
- 返回类型: