Expression

This node enables you to do your own calculations using simple expressons. Inputs are automatically derived from the expression. An expression set to a + someName + 1 will get two inputs: one for a and one for someName.

The Expression node runs JavaScript under the hood and supports a range of mathematical expressions.

Built in math functions

Expressions support the following funcitons:

• min(a,b) - Minimum of two values
• max(a,b) - Maximum of two values
• cos(angle) - The cosine of an angle in radians
• sin(angle) - The sine of an angle in radians
• tan(angle) - The tangent of an angle in radians
• sqrt(a) - Square root of a number
• pi - PI in radians
• round(a) - Rounds a number to the closest integer
• floor(a) - Removes the fractional part of a number
• ceil(a) - Rounds a value up to the closest higher integer. E.g. round(1.1) equals 2.
• abs(a) - The absolute value of a number. Negative values will become positive.
• random() - A random number from 0 to 1

Advanced

The Expression node is running JavaScript under the hood so in addition to the above functions any standard JavaScript functions will also be valid. The Expression node will add a return statement before the expression is executed. 1+2 will be evaluated as return (1+2)

Inputs

Data	Description
Inputs	Inputs are automatically derived from the expression. An expression set to a + someName + 1 will get two inputs, one for a and one for someName. As soon as any of the input values changes, the expression is reevaluated.
Expression	The expression to be calculated.

Outputs

Data	Description
Result	This output contains the result when evaluating the expression