====== Calculate Value ====== 

===== Description =====

This container calculates a value employing a logic/algebraic expression.

===== Inputs =====

^ Name  ^ Type  ^ Description  ^
| Expression  | [[Image Expression Type]]  | Algebraic or logical expression used to calculate the lookup table.  |

===== Optional Inputs =====

^ Name  ^ Type  ^ Description  ^ Default Value  ^
| Default Value  | [[Real Value Type]]  | Value to be passed in case an algebraic error occurs.  | None  |

===== Output =====

^ Name  ^ Type  ^ Description  ^
| Calculated  | [[Real Value Type]]  | The calculated value.  |

===== Group =====

[[Functor List#Table | Table]]

===== Notes =====

The list of mathematical and logical operators that can be employed in the logic/algebraic expression can be found in the [[Image Expression Type | image expression reference]]. Note that the operators and functions described in [[Image Expression Type#Image Operators and Functions | Image Operators and Functions]]  and [[Image Expression Type#Image Neighborhood Functions
| Image Neighborhood Functions]] can not be used in value calculations.

The tables used by the "Calculate Value" must be provided by a corresponding [[Number Table]] and the values must be provided by a corresponding [[Number Value]].

For additional information about how the null values are handled during image and value calculation, see [[Image Expression Null Value Handling|this reference]].


===== Internal Name =====

CalculateValue