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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.

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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.

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v3 Fixed issue with na padding causing nothing to show.

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v4 Handle NA values.

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v5 Restored previous demo code. Added trend function.

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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.

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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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