gogo2/PIVOT_DEBUGGING_IMPROVEMENTS.md

Pivot Points Debugging Improvements

Issue

Live charts are updating correctly, but pivot points stop being drawn after the first 2 pivot points are detected.

Debugging Improvements Added

1. Enhanced Logging ✅

File: ANNOTATE/web/static/js/chart_manager.js

Added detailed console logging:

• Pivot recalculation attempts with candle counts
• Throttling messages when calls are too frequent
• Before/after pivot marker counts
• Chart redraw status messages
• Warnings when charts or data are missing

2. Pivot Recalculation Throttling ✅

Problem: Pivot recalculation might be called too frequently with live updates Solution: Added 5-second throttling per timeframe

// Throttle pivot recalculation (max once every 5 seconds per timeframe)
const now = Date.now();
const lastCall = this.pivotRecalcThrottle[timeframe] || 0;
if (now - lastCall < 5000) {
    console.log(`[${timeframe}] Throttling pivot recalculation`);
    return;
}

3. Debug Methods ✅

Added manual debugging methods:

// Debug method to manually trigger pivot recalculation
debugRecalculatePivots(timeframe)

// Debug method to check pivot status  
debugPivotStatus()

Usage in browser console:

// Check current pivot status
window.appState.chartManager.debugPivotStatus();

// Manually trigger pivot recalculation for 1m chart
window.appState.chartManager.debugRecalculatePivots('1m');

4. API Test Script ✅

File: test_pivot_api.py

Tests the backend pivot recalculation API:

• Calls /api/recalculate-pivots directly
• Shows number of pivot markers returned
• Displays sample pivot data
• Verifies API is working correctly

Potential Root Causes

1. Throttling Too Aggressive

• 5-second throttling might prevent updates when new pivots form
• Check: Look for throttling messages in console

2. Backend API Issues

• Data provider might not have enough data
• Williams Market Structure calculation might be failing
• Check: Run python test_pivot_api.py to test API directly

3. Chart Redraw Issues

• Pivot shapes/annotations might not be updating correctly
• Display toggles might be hiding pivots
• Check: Look for redraw messages and toggle status

4. Data Synchronization

• Live data updates might not trigger pivot recalculation
• New candles might not be detected properly
• Check: Look for "NEW candles" vs "updated candles" messages

Debugging Steps

1. Check Console Logs

Look for these messages in browser console:

[1m] Recalculating pivots with 150 candles...
[1m] Pivots updated: 5 → 7 pivot candles  
[1m] Redrawing chart with pivots...

2. Check Throttling

If you see throttling messages, pivots might be blocked:

[1m] Throttling pivot recalculation (last call 3s ago)

3. Manual Debug

Use debug methods in browser console:

// Check status
window.appState.chartManager.debugPivotStatus();

// Force recalculation
window.appState.chartManager.debugRecalculatePivots('1m');

4. Test Backend API

Run the test script:

python test_pivot_api.py

5. Check Display Toggles

Verify pivots are enabled:

console.log(window.appState.chartManager.displayToggles.pivots); // Should be true

Expected Behavior After Fix

Live Pivot Updates Should:

1. ✅ Detect New Candles - Log when new candles are added
2. ✅ Trigger Recalculation - Call pivot API when needed (but throttled)
3. ✅ Update Markers - Show new pivot count in logs
4. ✅ Redraw Charts - Update visual pivot lines and dots
5. ✅ Respect Toggles - Only show pivots if enabled

Console Should Show:

[1m] Chart update: 0 updated, 1 new candles, total: 151
[1m] Recalculating pivots with 151 candles...
[1m] Pivots updated: 5 → 6 pivot candles
[1m] Redrawing chart with pivots...

Next Steps

1. Monitor Console - Check for pivot recalculation messages
2. Test API - Verify backend pivot calculation works
3. Adjust Throttling - Reduce throttle time if needed
4. Check Data Flow - Ensure new candles trigger recalculation
5. Verify Display - Confirm pivots are visible after redraw

The debugging improvements should help identify exactly where the pivot update process is failing! 🔍