How chart patterns work — and repainting
- Swings, necklines and confirmation
- Why patterns drawn on history mislead
- How NexusCore records patterns as they happened
Anatomy
Chart patterns are drawn from swing points. A pattern is a recognisable shape in those swings plus a line that must break — the neckline (tops, bottoms, head and shoulders) or a boundary (triangles, wedges, channels). Until that line breaks with a candle close, the pattern is only forming, and most forming patterns never complete.
Two numbers come from every pattern: the invalidation (where the idea is wrong — beyond the pattern's extreme) and the measured move (the pattern's height projected from the breakout, a rough target).
Repainting: the hidden trap
A swing high is only confirmed once several lower candles follow it (5 here). Software that redraws patterns over history therefore shows you shapes you could not have seen at the time. When we walked 4H history candle by candle on 10 pairs:
| Pattern | First visible only after its own breakout | Vanished before confirming |
|---|---|---|
| Head & shoulders | 61% | 28% |
| Double top / bottom | 53% | 35% |
| Triangle / wedge / channel | 42% | 24% |
On a chart that repaints, history looks full of perfect patterns you would have traded. That is the most common way pattern trading is over-sold.
How NexusCore draws them
The pattern indicators replay history candle by candle and keep each pattern as it was first seen:
- forming (dashed) — live, can still change or vanish;
- ✓ confirmed — the breakout close was seen while the pattern was visible (exactly what the 4H bot trades);
- seen only after its breakout and dropped — hidden by default; switch them on in the indicator settings to study them.
The seen marker shows when a pattern first became visible, BRK the breakout candle. The real charts in this track use the same record.
Check yourself
1. Why can a pattern drawn over history be misleading?
- Old data is wrong
- Its last swing was only confirmed later — sometimes after the breakout ✓
- Exchanges change prices
2. What does "✓ confirmed" mean in NexusCore?
- The pattern looks clean
- The breakout close was seen live while the pattern was visible ✓
- The target was hit
3. Until the neckline breaks with a close, a double top is…
- Confirmed
- Just forming — possibly just a range ✓
- A sell signal
Terms in this lesson
- Forming / confirmed
- A pattern before / after its breakout close.
- Measured move
- A pattern's height projected from the breakout as a rough target.
- Neckline
- The line a pattern must close through to confirm.
- Repainting
- A tool redrawing history with information that was not available at the time.