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Time Line Chart (Milestones)

Chronological milestone timeline chart with step progressions, date markers, and release phase indicators.

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#timeline#milestones#roadmap#progress#events#dates
Customization Guides & Code Snippets

◆Milestone Roadmaps with Step Interpolation

Using type='stepAfter' creates a stepped progression line that stays flat until a new milestone tier is unlocked, visually communicating sprint releases, funding rounds, or product phases.

<Line type="stepAfter" dataKey="completion" stroke="#00e5a0" strokeWidth={3} dot={<CustomMilestoneDot />} />

◆Reference Dots for Event Annotations

Use Recharts ReferenceDot or custom SVG markers to pin key company milestones directly to coordinates on the timeline.

<ReferenceDot x="Q3 Launch" y={75} r={8} fill="#00e5a0" stroke="#0b0d0f" />
When to use a Time Line Chart (Milestones)

A Time Line Chart (Milestones) is ideal for developers and designers who need to display data clearly and effectively. Use this chart type when:

  • ✓Showing trends over time (e.g. daily active users over 30 days)
  • ✓Comparing multiple metrics on the same timeline
  • ✓Displaying continuous data like temperature, stock prices, or heart rate
  • ✓Highlighting growth rates and momentum
Tips for Recharts Time Line Chart (Milestones)
TIP 1Use type='monotone' for smooth curves instead of sharp angles
TIP 2Set dot={{ r: 4 }} to show data points without cluttering the chart
TIP 3Add a gradient fill under the line to create an area effect
TIP 4Use isAnimationActive={false} for real-time updating charts
TIP 5Multiple lines work best with 5 or fewer series — beyond that, use a table
Key Recharts Props
PROPTYPEDESCRIPTION
dataarrayArray of objects with your data values
dataKeystringThe key in your data objects to use for line values
strokestringLine color
strokeWidthnumberLine thickness in pixels (default: 1)
typestring'monotone' | 'linear' | 'step' — controls curve style
dotobject | booleanShow/hide data point dots, or pass style object
Frequently Asked Questions

What is a timeline chart (milestone roadmap chart)?

A timeline chart visualizes project phases, feature releases, or historical events across a linear chronological axis. By pairing stepped lines with custom milestone markers, teams can track deliverables against key target dates.

How do you build a milestone timeline chart in Recharts?

Combine <Line type='stepAfter' dataKey='progress'> with custom dot components, or use <ComposedChart> with <ReferenceDot> components to place interactive milestones at specific coordinate dates.

How do you make a timeline chart responsive?

Wrap the chart in Recharts <ResponsiveContainer width='100%' height={360}> and format the <XAxis> with abbreviated date strings (e.g. 'Q1 24', 'Apr 24') or interval='preserveStartEnd' to prevent text overlap on mobile screens.

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