Settings & Export

Chart Settings

Click the settings icon in the toolbar to open the settings drawer. Changes apply immediately to the chart and are persisted when you click Save in the trend header.

Sampling

Sampling controls how raw data points are aggregated when viewing large time ranges.

Window Period determines the time bucket size:

• Auto — the system targets 100–5,000 data points on screen based on the visible range
• Custom — choose a fixed window: Raw (no aggregation), 1s, 5s, 10s, 30s, 1m, 5m, 15m, or 1h

Aggregate Function reduces each window to a single value:

• Auto — uses Mean
• Custom — choose from Mean, Median, Last, First, Min, Max, or Sum

Fill Missing Values carries the last known value forward to fill gaps and produce a continuous line. Disabled in Raw mode.

Display

Exporting Data

Click the export icon in the toolbar to open the export drawer.

Configuration

• Date range — defaults to the chart's visible range, or check Export all data to export complete history
• Tag selection — all plotted tags are included by default; uncheck any you don't need, or add tags that aren't in the trend
• Mode — Raw exports every data point as stored; Resampled aggregates to regular intervals (1s–1h) with a chosen aggregate function
• Format — CSV, JSON, or Parquet
• Split into daily files — creates one file per calendar day, packaged as a ZIP

Size Limits

Koios estimates the export size before starting:

What's Next

• Trends — overview and chart navigation
• Traces & Axes — add tags and configure multi-axis layouts