Length 0:39Save $60,000 between 25 and 35: it becomes $493,000 by 65
Line · Stock returns through 2025
Chart type · Trend
Line
An animated line reveal for one or more series.
How to read it
Follow the path: slope is the rate of change and height at any point is the value.
Best for
A trend over time where the shape of the path is the point.
When not to use it
The x-axis holds categories rather than time — a line between unordered categories implies a progression that is not there.
The common mistake
Cropping the y-axis until noise looks like a trend, or drawing straight through a gap where nothing was measured.
Example data
Inflation changes the story
Indexed grocery basket cost, 2020 = 100
Point at the chart, or focus it and use the arrow keys, to read each value.
Period
- Grocery basket
- 2020: 100 → 2025: 137 (+37%)
High 137 (2025) · Low 100 (2020) - Restaurant meals
- 2020: 100 → 2025: 134 (+34%)
High 134 (2025) · Low 100 (2020)
The sample dataset this format ships with, drawn the way the site draws every clip's numbers — hover, sort or step through it. Figures as given by its source line: Synthetic CPI teaching example.
1 line reel
- Length 0:39
Related chart types
- No reels yetAreaA filled trend, optionally stacked or shown as shares of 100%.
- 3 reelsBar raceHorizontal bars reordering as values change across frames.
- No reels yetSlopeA two-point before-and-after comparison per item.
- 1 reelWaterfallStart, contributions, end: each step peels off a running total, and the payoff brackets how far the end landed from the start.
- No reels yetFunnelA true-width drop-off funnel: a stream of dots spills out at every step, a live counter falls stage by stage, and the leakiest step cracks open at the end.
- No reels yetScatterPoints revealed against two axes, with an optional fitted trendline, the gap to it for the story point, and a refit without that point.