# `Macaw.Data.Operations.Transforms.Lttb`
[🔗](https://github.com/dcoai/macaw_data/blob/v0.5.3/lib/macaw/data/operations/transforms/time.ex#L90)

`lttb` (spec/04 §4.4): shape-preserving downsampling by Largest-Triangle-Three-Buckets
(`Macaw.Data.Reduce.lttb/3`) to `n` rows, whole rows kept, gaps passing through. `n` is
frame-bound: `"plot"` is the plot's width in whole pixels. A reducer (spec/04 §7).

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*Consult [api-reference.md](api-reference.md) for complete listing*