Math [Obj,Double]

Description

Executes a free math expression on the values of the second column.

Warning: this block can fail if the expression is invalid (e.g. referring to a non available mathematical function), or if the expressions computes to invalid results (e.g. division by zero).

Input

• A [OBJ,DOUBLE]: a list of pairs

Output

• RESULT [OBJ,DOUBLE]: result of the operation

Parameters

• Expression: the mathematical expression to compute

  • use $A to refer to the values comings from input A

  • arithmetic operators and common mathematical functions can be used

  • the expression is evaluated by the database engine. See MonetDB Functions and Operators for a full list of functions and operators available.