This operator can be used to select one element from a window of elements.
Parameter
- method (String): The method that should be used for selection
- FIRST: The first element in the window
- LAST: The last element in the window
- MIN: The element with a minimal value
- MAX: The element with a maximal value
- attribute (SDFAttribute): For some methods this states the attribute for which the element should be selected.
Example
#PARSER PQL
#ADDQUERY
out = TUPLEAGGREGATE({
method = 'MAX',
attribute = 'id'
},
ELEMENTWINDOW({
size = 5,
slide = 5
},
person
)
)
out2 = TUPLEAGGREGATE({
method = 'MIN',
attribute = 'id'
},
ELEMENTWINDOW({
size = 5,
slide = 5
},
person
)
)
out3 = TUPLEAGGREGATE({
method = 'FIRST'
},
ELEMENTWINDOW({
size = 5,
slide = 5
},
person
)
)
out4 = TUPLEAGGREGATE({
method = 'LAST'
},
ELEMENTWINDOW({
size = 5,
slide = 5
},
person
)
)