LocalLimit

Library "LocalLimit"
Calculates the local upper or local lower limit for a given series. Applying multiple passes produces what appears like support or resistance levels.
See Local Limits for more detail.

upper(src) Produces the recent local upper limit for a given series.
Parameters:
src: The source series to derive from.

lower(src) Produces the recent local lower limit for a given series.
Parameters:
src: The source series to derive from.

版本注释

v2 Added option for padding.

Updated:
upper(src, padding) Produces the recent local upper limit for a given series.
Parameters:
src: The source series to derive from.
padding: Gives some extra room when lowering the level.

lower(src, padding) Produces the recent local lower limit for a given series.
Parameters:
src: The source series to derive from.
padding: Gives some extra room when raising the level.

版本注释

v3 Fixed issue with na padding causing nothing to show.

版本注释

v4 Handle NA values.

版本注释

v5 Restored previous demo code. Added trend function.

版本注释

v6 added trend function (missing export).

Added:
trend(src) Determines the local trend of a series that and persists the trend if the value is unchanged.
Parameters:
src: The source series to derive from.
return +1 when the trend is up; -1 when the trend is down; 0 if the trend is not yet established.

版本注释

v7

Added:
valueAndTrend(src)
Creates a Limit object that contains the value and the trend.
Parameters:
src: The source series to derive from.

of(level, padding)
Creates a Level object representing the local upper and lower limits.
Parameters:
level: The source levels to expand of.
padding: Gives some extra room when raising the lower level and lowering the upper level.

Limit
Fields:
value
trend

Level
Fields:
upper
lower

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