Reference Updated April 8, 2026

LOG

Overview

Description	Returns the logarithm of a number (first argument) with respect to a base (second argument), while retaining all dimensions. Use when you need a logarithm with a specific base rather than the natural logarithm.
Syntax	`LOG('Node1', 'Node2')`
Parameter	Value (`Node1`): The value for which to calculate the logarithm, specified using the node name in single quotes (e.g. `'Profit'`) Base (`Node2`): The base to use for calculation of the logarithm. The base can also be a standalone number.

Description

Returns the logarithm of a number (first argument) with respect to a base (second argument), while retaining all dimensions.

Use when you need a logarithm with a specific base rather than the natural logarithm.

Syntax

`LOG('Node1', 'Node2')`

Parameter

Value (Node1): The value for which to calculate the logarithm, specified using the node name in single quotes (e.g. 'Profit')
Base (Node2): The base to use for calculation of the logarithm. The base can also be a standalone number.

This example calculates the logarithm of input values using a separate node to define the base for each year.

Input node: Value

Input node: Base

Formula: LOG('Value', 'Base')

Function	When to use instead
LN	When you need the natural logarithm instead of a logarithm with a custom base.
EXP	When you need exponentiation with base e rather than a logarithmic transformation.