Lines
Trend lines, rays, extended and arrowed lines
A straight line through two or more swing points that shows the direction and slope of a trend.
La idea en pocas palabras
In an uptrend each pullback tends to stop a little higher than the last. Joining those lows with a line shows the trend's path; as long as the price stays above it, the trend is intact. A ray extends the line into the future, an extended line both ways, and an arrowed line simply points.
Cómo se calcula
Click two points. For an uptrend, connect two rising lows; for a downtrend, two falling highs. A third touch makes the line more meaningful.
Price on the line at any time = price at point A + slope × (time − time at point A)
slope = (price B − price A) ÷ (time B − time A)Cómo usarlo
- Buy near a rising trend line in an uptrend; sell near a falling one in a downtrend.
- A clear break and close through the line warns the trend may be over.
- Use the Extend setting to project the line into the future as a ray.
Sacar conclusiones
- Steeper lines break sooner; gentle lines last longer.
- After a break, the old line often becomes resistance (or support) on a retest.
Ejemplo
EURUSD makes lows at 1.0700, 1.0760 and 1.0810 over six weeks. A line through them rises about 0.0010 a week; a daily close below it at 1.0830 ends the trend.
Los precios de los ejemplos son ilustrativos.
Ten cuidado con
- Lines drawn through candle bodies versus wicks give different results; be consistent.
- Two points always make a line; three touches make it significant.
Un poco de historia
Trend lines are among the oldest chart tools, drawn by chart readers for more than a century.
Solo contenido educativo. Ningún indicador ni patrón predice el futuro, y nada de lo aquí expuesto es asesoramiento de inversión.