ranvar.buckets
ranvar.buckets(weight : number, low : number, high : number) 🡒 ranvar, aggregator
Returns a ranvar as specified segment-wise. The first argument is the weight (later normalized as probabilities). The second and third arguments are the inclusive lower and higher boundaries.
Example:
table T = with
[| as P, as A, as B, as X |]
[| 0.4, 0, 1, "a" |]
[| 0.6, 2, 3, "a" |]
[| 0.5, 1, 3, "b" |]
[| 0.5, 5, 10, "b" |]
[| 1.0, 0, 10, "c" |]
table G[gdim] = by T.X
where T.X != "c"
show table "" a1b4 with
gdim
ranvar.buckets(T.P, T.A, T.B)
group by gdim
If any of those conditions are not respected, the aggregation fails:
- Each weight must be nonnegative.
- The sum of the weights per group must be positive.
- The buckets must not overlap.
This aggregator is the counterpart of extend.ranvar().
Example:
x = poisson(3)
table G = extend.ranvar(x)
G.P = int(x, G.Min, G.Max)
y = ranvar.buckets(G.P, G.Min, G.Max)
show scalar "Original" a1b3 with x
show scalar "Recomposed" c1d3 with y