slice

Keeps a range of events within the interval [begin, end) stepping by stride.

slice [begin=int, end=int, stride=int]

Description

The slice operator selects a range of events from the input. The semantics of the operator match Python's array slicing.

Potentially High Memory Usage

Take care when using this operator with large inputs.

begin = int (optional)

The beginning (inclusive) of the range to keep. Use a negative number to count from the end.

end = int (optional)

The end (exclusive) of the range to keep. Use a negative number to count from the end.

stride = int (optional)

The number of elements to advance before the next element. Use a negative number to count from the end, effectively reversing the stream.

Examples

Get the second 100 events:

slice begin=100, end=200

Get the last five events:

slice begin=-5

Skip the last ten events:

slice end=-10

Return the last 50 events, except for the last 2:

slice begin=-50, end=-2

Skip the first and the last event:

slice begin=1, end=-1

Return every second event starting from the tenth:

slice begin=9, stride=2

Return all but the last five events in reverse order:

slice end=-5, stride=-1