What the picker changes

Top topics digest — the cards score the selected period against the prior 4 weeks.
12-week heatmap & outlet matrix — show the 12 weeks ending at the selected week (they slide back with the picker, they aren’t a fixed snapshot).
Per-topic volume / alias drift — same 12-week trailing window, anchored on the selected period.
Coverage gap quadrant — scores the selected period against the 12 weeks before it (not including it).
Anomaly cards — only show alerts the detector fired during the selected period. Quiet weeks legitimately show none.

What stays as-is

Outlet orientation strip / lean colours — context-only, drawn from the last 12 weeks of activity regardless.
Co-occurrence graph — recent-activity anchored, not picker-driven.
Source & topic profiles — all-time data for the topic; the picker doesn’t affect them.

Rolling 7 days is a sliding live window for “current vibes”; switch to Weekly to compare specific weeks side-by-side.

Weekly Rolling 7 days

live window

Topic · social

Public Transport Costs For Young People

6 posts · 2,039 engagement · first seen 18 May 2023 · last seen 4 Oct 2026

Debate over government policy on reducing or eliminating public transport fares for children, students, and young people in New Zealand, including proposals for free or subsidised fares and concerns about affordability as part of the broader cost-of-living pressures facing youth.

Platform mix

Where the conversation is happening. Engagement is volume-weighted (likes + 2×shares + 3×replies); a small number of high-impact posts can outrank a high-volume but low-engagement platform.

facebook

1 post · 1,306 engagement

1,306
youtube

1 post · 0 engagement

0

Public Transport Costs For Young People

Platform mix

Top posts by engagement