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 — expression function - inverse tangent [2016/09/14 14:19] (current) Line 1: Line 1: + ====== Inverse Tangent (Expression Function) ====== + ===== Purpose ===== + The **Inverse Tangent** function (ATAN) is used to calculate the inverse, arc, [[Expression Function - Tangent|tangent]] in radians, degrees, or gradians. ​ + + {{::​atan_initial.png?​direct&​600|}} + + ===== Parameters ===== + The **Inverse Tangent** function has two parameters, the first of which is required: + + ==== Value ==== + + Allowed Inputs: [[Field|field]] value or number + + The first required parameter is the value that the inverse tangent will be obtained from either use the use the [[Query Builder]] to choose a field that contains the value or use type a value to enter a number. + + ==== Angle Unit ==== + + Allowed Inputs: omitted, '​d',​ '​g' ​ + + The second parameter of the **Inverse Tangent** function is the unit of the angle returned. If the angle unit is omitted or not recognized then radians will be be used.  For an angle provided in degrees use '​d'​. ​ For an angle provided in gradians use '​g'​. ​ If the angle unit needs to be dynamically stored in a field then the advanced expression builder will need to be used. + + + ===== Output ===== + + The output of the **Inverse Tangent** function is a number representing the arc tangent of the angle in radians. + + ===== Example ===== + + For example ATAN(0.57735026919) is "​0.523598775599",​ ATAN(0.57735026919,'​d'​) is "​30",​ and ATAN(0.57735026919,'​g'​) is "​33.3333333333"​.
expression function - inverse tangent.txt · Last modified: 2016/09/14 14:19 (external edit)   