foldCold takes 3 parameters:
- a collection
- a property/column name
- a function name (min/max/avg)
The function is applied on the column that is selected.
In this example we have 3 virtual points: a(10), b(20) and c(60). We use foldCol to calculate the max, min and avg of curVal of each of this points.
The blocks:
The result:
