Define Alert

You can define the details of alerts. The entrances of defining alert:

With the above alert definition, the "mtu" data unit shown on the map will be highlighted if the specified condition matched:

• Provide different variable analysis operations according to different variable types.
• Optimize the definition of condition in the ‘If’ statement to make it closer to natural language and easier to understand.
• Support more methods for different types of variables in ‘Operation’ and expand the range of cases covered by the alert.

  

The following table lists the operations supported by the Variable types (string, number, and bool):

Variable Type	Operation	Grammar
String	contains	$var1 (contains) ____.
String	does not contain	$var1 (does not contain) ____.
String	equals	$var1 (equals) ____.
String	does not equal	$var1 (does not equal) ____.
String	starts with	$var1 (starts with) ____.
String	has changed	$var1 (has changed) from the last result.
String	has not changed	$var1 (has not changed) from the last result.
String	is flapping	$var1 (is flapping). __ changes in last __ sampling.
number	==	$num1 (==) __
number	!=	$num1 (!=) __
number	<	$num1 (<) __
number	<=	$num1 (<=) __
number	>	$num1 (>) __
number	>=	$num1 (>=) __
number	is in the range	$num1 (is in the range of) __.
number	is out of the range	$num1 (is out of the range) __.
number	has changed	$num1 (has changed) from the last result.
number	has not changed	$num1 (has not changed) from the last result.
number	is flapping	$num1 (is flapping). __ changes in last __ sampling.
number	is increasing	$num1 (is increasing) in last __ sampling.
number	is decreasing	$num1 (is decreasing) in last __ sampling.
number	delta	$num1 (delta) (>). (PS. [delta] = [now] - [last])
number	abs(delta)	$num1 (abs(delat)) (>). (PS. Abs(delta) means rangeability)
bool	equals	$var1 (equals) ____.
bool	does not equal	$var1 (does not equal) ____.
bool	has changed	$var1 (has changed) from the last result.
bool	has not changed	$var1 (has not changed) from the last result.
bool	is flapping	$var1 (is flapping). __ changes in last __ sampling.

• Added tip to help users understand special syntax and operators.