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Threshold-based change detection.

1 modules

Module	Description
檢測變動	檢測數值是否超過門檻變動（依數量或百分比）

Modules

檢測變動

compare.change

檢測數值是否超過門檻變動（依數量或百分比）

Parameters:

Name	Type	Required	Default	Description
current_value	number	Yes	-	The current/new value to compare
previous_value	number	Yes	-	The previous/old value to compare against
mode	select (percent, absolute, any)	No	percent	要比較的先前/舊數值
threshold	number	No	5	觸發的最小變動（5 = 5% 或 5 單位）
direction	select (both, up, down)	No	both	要檢測的變動方向

Output:

Field	Type	Description
ok	boolean	操作是否成功
changed	boolean	操作是否成功
direction	string	操作是否成功
change_percent	number	變動方向：
change_absolute	number	百分比變動（正值 = 上升，負值 = 下降）
current_value	number	The current value
previous_value	number	The previous value
summary	string	目前數值

Example: Crypto price alert (5% change)

current_value: 44500
previous_value: 42000
mode: percent
threshold: 5
direction: both

Example: Stock drop alert

current_value: 145.5
previous_value: 152.3
mode: percent
threshold: 3
direction: down

Example: Temperature change (absolute)

current_value: 32
previous_value: 25
mode: absolute
threshold: 5
direction: up