sum
The sum of all the elements of the group, as if chaining + operations.
sum(T.a : number) 🡒 number, autodiff aggregator
Returns the sum of the numbers of the group.
Example:
table T = with
[| as A, as B |]
[| 0, "a" |]
[| 0.5, "a" |]
[| 0, "b" |]
[| 1, "b" |]
[| 1, "c" |]
table G[gdim] = by T.B
where T.B != "c"
show table "" a1b4 with
gdim
sum(T.A)
group by gdim
The aggregator returns 0 on empty groups.
sum(T.a : ranvar) 🡒 number, aggregator
Returns the sum of the ranvars of the group.
Example:
table T = with
[| as A, as B |]
[| 0, "a" |]
[| 0.5, "a" |]
[| 0, "b" |]
[| 1, "b" |]
[| 1, "c" |]
T.R = poisson(T.A)
table G[gdim] = by T.B
where T.B != "c"
show table "" a1b4 with
gdim
sum(T.R)
group by gdim
The aggregator returns dirac(0) on empty groups.
sum(T.a : zedfunc) 🡒 number, aggregator
Returns the sum of the zedfuncs of the group.
Example:
table T = with
[| as A, as B |]
[| 0, "a" |]
[| 0.5, "a" |]
[| 0, "b" |]
[| 1, "b" |]
[| 1, "c" |]
T.R = linear(T.A)
table G[gdim] = by T.B
where T.B != "c"
show table "" a1b4 with
gdim
sum(T.R)
group by gdim
The aggregator returns constant(0) on empty groups.