collections/histogram_utils library

Histogram builder with fixed and quantile-based bins — roadmap #473.

Functions

histogramFixed(List<num> values, List<num> edges) → List<int>

Build histogram: values binned by edges (sorted). Returns count per bin; edges.length - 1 bins.

histogramQuantile(List<num> values, List<double> quantiles) → List<int>

Bin boundaries at quantiles (e.g. 0, 0.25, 0.5, 0.75, 1). quantiles in 0,1, sorted.