> ## Documentation Index
> Fetch the complete documentation index at: https://arizeai-433a7140.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# 05.27.2026: Drag-to-Zoom on Project Metric Charts

> Click and drag across any project metric chart or the spans sparkline to zoom into a selected time window.

**Available in arize-phoenix 16.3.0+**

Project metric charts and the spans-tab sparkline now support click-and-drag to zoom into a time window. Drag across any region of the chart to set a custom time range — the selection applies to all metric panels simultaneously via the shared time-range context.

* **All metric charts covered**: latency, error rate, token usage, and the trace-count sparkline all respond to brush selection.
* **Shared time range**: dragging on any chart updates the page-level time range, keeping all panels in sync.
* **Adaptive tick density**: x-axis labels scale with the chart's rendered pixel width rather than bin count, so labels stay readable at any zoom level.