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Key functions

Six practical functions to start with — rolling levels, displacement, glue math, and conditional branching.

New to functions? Read Functions overview first. All 10 keys: Function catalog. Series wiring: Series and panels.

HIGHEST​

  • Key: HIGHEST
  • Pane behavior: overlay on the main chart (newPane: false)
  • Default inputs: HIGH = h, PERIODS = 25
  • Output: one HIGHEST series
chart.addScript("HIGHEST");

Current definition notes:

  • the controller delegates to FUSION.lib.getMax() over the requested lookback
  • the registry colors the line #8bc34a
  • the default input maps directly to the main-series high field

Use HIGHEST when you need a rolling upper boundary from the current price series without creating a full channel indicator.

LOWEST​

  • Key: LOWEST
  • Pane behavior: overlay on the main chart (newPane: false)
  • Default inputs: LOW = l, PERIODS = 25
  • Output: one LOWEST series
chart.addScript("LOWEST");

Current definition notes:

  • the controller delegates to FUSION.lib.getMin() over the requested lookback
  • the registry colors the line #ff5722
  • this is the direct companion to HIGHEST for lower-bound calculations

Use LOWEST when you need a rolling lower boundary that stays on the main panel.

DISPLACE​

  • Key: DISPLACE
  • Pane behavior: overlay on the main chart (newPane: false)
  • Default inputs: DSERIES, VALUE = 0, PERIODS = 12
  • Output: one DISPLACE series
chart.addScript("DISPLACE");

Current definition notes:

  • the current controller calls FUSION.lib.displace() and then adds the optional numeric offset from VALUE
  • when calculation reaches the end of the input series, the script also writes future values for the displacement window
  • this function is most useful after DSERIES is wired to a real source series

Use DISPLACE when you need a forward- or backward-shifted version of an existing series.

IGLUE​

  • Key: IGLUE
  • Pane behavior: overlay on the main chart (newPane: false)
  • Default inputs: IN1, IN2, OPERATION = Add
  • Output: one IGLUE series
chart.addScript("IGLUE");

Current definition notes:

  • the current operation list is Add, Substract, Multiply, Divide, and Power of
  • both primary inputs are series inputs, so the function is designed to combine two existing script outputs or market series
  • the controller returns early if either input is missing at the current bar

Use IGLUE when you need direct series-to-series math without authoring a custom Fusion script.

IF​

  • Key: IF
  • Pane behavior: opens a new pane (newPane: true)
  • Default inputs: VAL_A = 0, VAL_B = 0, VAL_X = 0, VAL_Y = 0, VAL_Z = 0
  • Output: one IF series with field IFValue
chart.addScript("IF");

Current definition notes:

  • each input is conditional, so it can resolve from a constant or a series at runtime
  • the output chooses VAL_X when VAL_A > VAL_B, VAL_Y when equal, and VAL_Z when VAL_A < VAL_B
  • because all defaults are zero, the key is most useful once you wire its inputs to meaningful series or constants

Use IF when you need a branching derived series without leaving the built-in registry.

FIBONACCI​

  • Key: FIBONACCI
  • Pane behavior: overlay on the main chart (newPane: false)
  • Default inputs: HIGH = h, LOW = l, PERIODS = 24
  • Output: six line series: FIBONACCI0, FIBONACCI2, FIBONACCI3, FIBONACCI4, FIBONACCI6, and FIBONACCI7
chart.addScript("FIBONACCI");

Current definition notes:

  • the controller computes levels from the rolling highest high and lowest low over the configured lookback
  • the current output set maps to the low, 0.382, 0.5, 0.618, high, and 1.618 extension levels
  • all plotted lines share the same default color in the current registry

Use FIBONACCI when you want automatically updating retracement and extension bands without drawing manual fib tools.

Putting them together​

This is a practical first combination:

chart.addScript("HIGHEST");
chart.addScript("LOWEST");
chart.addScript("FIBONACCI");

That gives you rolling upper/lower bounds plus a multi-level retracement overlay on the main chart.

If you want to wire function inputs to indicator outputs or conditional series inputs, continue with Programmatic wiring.

If you need the broader registry, go back to Function catalog.