cc-lib's resamplers cannot smooth: validateFrequency bails out when the new
frequency is not coarser than the old one, and every algorithm produces an
output strictly shorter than its input. They consolidate for transport,
which is a separate job from filtering for display, and they only act at all
once a series exceeds the target point count - shorter jobs arrive raw.
Add a centered, NaN-aware moving average in the plot layer, applied after
whatever downsampling the backend performed. It preserves length and index
alignment, so the X array, the visible point count and the zoom-resampling
hook are unaffected. NaN and null samples are skipped, an all-NaN window
stays NaN so gaps keep rendering, and the window shrinks at the series edges
rather than introducing new gaps there.
The window is a user setting in data points, defaulting to 3, and is
orthogonal to the resample algorithm - it stacks on top of average
consolidation rather than replacing it. All series of a stats plot are
smoothed together, since smoothing only some would break the
min <= mid <= max invariant the plot bands rely on. Smoothing is display
only: reported statistics and job footprints come from JobMetric.Statistics
and are untouched. The uPlot cursor readout does show the smoothed value.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
moebiusbandandClaude Opus 5