Aggregates along an axis (returns new array).

Reduces the array along the specified axis using the given aggregation type.

Parameters:

• axis - Axis to aggregate along (use ALL_AXES for all)
• aggrType - Type of aggregation (sum, mean, max, min, std)

Returns: New array with aggregated values

Example:

let arr = newArange(@[3, 4], 0.0, 12.0, 1.0)
let rowSums = arr.newAggregate(0, aggrSum)     # Sum along axis 0
let colMeans = arr.newAggregate(1, aggrMean)   # Mean along axis 1

Aggregates all elements to a scalar value.

Parameters:

• aggrType - Type of aggregation (sum, mean, max, min, std)

Returns: Scalar result of aggregation

Example:

let arr = newArange(@[3, 4], 0.0, 12.0, 1.0)
let total = arr.scalarAggregate(aggrSum)   # Sum of all elements = 66
let average = arr.scalarAggregate(aggrMean) # Mean = 5.5