Price levels 40x apart, so each panel keeps its own y scale, yet all six plot rectangles are pixel-identical. Zoom anywhere: every ticker follows on the same date window, and one reset brings them all back.
scales.y: 'independent' gives every ticker its own
domain (a $24 stock and a $900 stock cannot share an axis honestly), and
an independent scale draws its own labels on every panel. The panels stay
aligned anyway: the trellis measures each panel's label gutter and pushes
the widest as a shared yaxis.labels.minWidth, so shapes
compare cleanly across the grid. The x window is shared: drag-zoom any
panel and the whole grid moves; the single toolbar's reset restores it.
Trellis is a premium feature; without a license it renders with a trial
watermark.