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Fuel Chart Improvements: Smoother Graphs & Accurate Distance Tracking

· 2 min read
Traqcare Team
Traqcare Team
Product & Engineering

We have shipped significant improvements to the fuel consumption chart across both web and mobile platforms.

What Changed

Mobile App — Smoother Fuel Graph

The mobile fuel chart was previously rendering with visual noise when displaying data over multiple days. This has been completely fixed:

  • Data downsampling — The chart now intelligently reduces data points to ~500 for smooth rendering while preserving accuracy at refuel/theft event points
  • Distance line fix — History data rows with zero cumulative distance no longer cause the distance overlay to drop to zero. The chart now carries forward the last known good distance value
  • Per-day chart — Tapping a day in the Fuel Summary report now opens the chart for that specific day, not the entire date range

Web App — Already Smooth

The web app uses ECharts with LTTB sampling and Catmull-Rom interpolation, which already provided smooth rendering. No changes needed on web.

What This Means for You

  • Cleaner fuel analysis — No more jagged lines or confusing visual artifacts
  • Accurate theft detection — Refuel and drain events are precisely marked
  • Better mobile experience — The chart auto-rotates to landscape for detailed viewing

Fuel Chart Reading Guide

Need help understanding the fuel chart? Check our Fuel Chart Guide for a complete walkthrough of what each line, marker, and summary stat means.