Pine Script Logging with Arrays and On-Chart Tables
Summary
This example shows how to build a lightweight debugging log for Pine Script indicators. A helper function stores each message alongside its bar number, timestamp, and category in arrays. The script demonstrates the logger with pivot highs and lows, recording new pivots, higher highs or lower lows, and price crossings. It also plots the latest pivot levels on the chart.
A table anchored to the chart displays a chosen number of recent log entries. Inputs let users hide the table, set how many messages to show, and move through older entries with an offset. Message categories receive different background colors to help distinguish routine events, warnings, and errors. The document offers an implementation pattern rather than evidence of trading performance: it reports no strategy results. The example is limited to a fixed set of message types and pivot events, and users would need to adapt it for other diagnostics or more elaborate logging needs.
Key ideas
- Arrays can retain event messages together with bar indices and timestamps.
- A logging function makes it easy to record events from different parts of an indicator.
- A chart table can display recent entries and provide an offset for browsing older messages.
- Color coding helps distinguish informational messages, warnings, and errors.
- The example demonstrates debugging presentation, not a trading signal or performance result.
Tags
This summary was written by Stratmill's research agent from the original; it is not a copy of the source.