TradingCharts

Sine Line

Fit the wave so its troughs align with two clear swing lows, then read future troughs and crests as timing windows.

What it draws

Overlays a continuous sine wave on the chart, with wavelength set by two anchor points. It models price's oscillation as a smooth periodic function, making phase (rising half vs. falling half) visible at any bar.

How to draw it

  1. Pick Sine Line from the left toolbar (Cycles group).
  2. Two anchor points: click at a reference point (typically a low) and again one half or full cycle later to set the wavelength and phase. The chart repeats the sine wave in both directions.

How traders use it

  • Fit the wave so its troughs align with two clear swing lows, then read future troughs and crests as timing windows.
  • Use the slope of the sine at the current bar as a phase cue — early rising phase favors longs, cresting phase argues for tightening stops.
  • Overlay on an oscillator pane as well as price to check whether momentum shares the same rhythm.
  • Adjust amplitude purely for readability; only the horizontal wavelength carries analytical meaning.

Settings reference

Double-click the drawing (or use its floating toolbar → gear) to open settings:

Setting Control Possible values Default Effect
Color color any color (theme color picker) #05B878 Main stroke color of the drawing — lines, outlines and (unless overridden) labels derive from it.
Line Width select 1px | 2px | 3px | 4px 2px Stroke thickness of the drawing’s lines and outlines.
Line Style select Solid | Dashed | Dotted Solid Dash pattern used for the drawing’s lines.
[Tab] Text — Text checkbox + textarea on/off, with a multiline text box for the label content off (on when the drawing already carries text) Enables an attached text label on the drawing; typing in the box auto-enables it and updates the label live.
[Tab] Text — Text Color color any color same as the drawing’s line color Color of the attached text label.
[Tab] Text — Font Size select 8, 10, 11, 12, 14, 16, 18, 20, 24, 28, 32, 36, 48, 64, 72 14 Point size of the attached label text.
[Tab] Text — Bold checkbox on/off (B toggle button) off Renders the label in bold.
[Tab] Text — Italic checkbox on/off (I toggle button) off Renders the label in italics.
[Tab] Text — Word Wrap checkbox on/off off Wraps long label text onto multiple lines instead of one long line.
[Tab] Text — Text alignment (vertical) select Top | Middle | Bottom Top Vertical placement of the label relative to the drawing.
[Tab] Text — Text alignment (horizontal) select Left | Center | Right Center Horizontal placement of the label relative to the drawing.
[Tab] Coordinates number + datetime one row per anchor point: price (number, step 0.05) and local date/time the drawing’s current anchor values Edits anchor geometry numerically — changing a point’s price or time moves the drawing live on the chart.
[Tab] Visibility checkbox + number range interval buckets: Ticks; Seconds 1–59; Minutes 1–59; Hours 1–24; Days 1–366; Weeks 1–52; Months 1–12; Ranges (each bucket has an on/off checkbox, most also a from–to range) visible on all intervals Per-timeframe visibility rules — untick a bucket to hide the drawing on those chart resolutions, or narrow the from–to range within a bucket.

Editing & managing

  • Move / adjust: drag the drawing or any anchor handle; magnet mode snaps points to OHLC values.
  • Clone / lock / hide / delete from the floating toolbar or right-click menu.
  • Templates: save the current style from the settings dialog and reapply it to new drawings.
  • Every action is undoable (⌘Z / Ctrl+Z).

Watch out for

  • Price is not a stationary sine wave — trends stretch and compress the cycle, so the fit degrades the further it is projected from the anchored swings.