====== Log (Expression Function) ======

===== Purpose =====
The **Log** function (LOG) is used obtain the power to which the base value must be raised to produce the number provided. 

{{::log_initial.png?direct&600|}}

===== Parameters =====
The **Log** function has two parameters:

==== Number ====

Allowed Inputs: [[Field|field]] value or a number

The first parameter of the **Log** function is the value that should result from the base being raised to the resulting power. Either use the query builder or the type a value option to enter a number.

==== Base ====

Allowed Inputs: [[Field|field]] value or number

The second parameter is the number that represents the base of the exponentiation either use the use the [[Query Builder]] to choose a field that contains the value or use type a value to enter a number.  If no value is provided ten will be used.


===== Output =====

The output of the **LOG** function is the power to which the base value must be raised to produce the value.

===== Example =====

For example LOG(1000) would result in 3 and LOG(19683,3) would result in 9.