LN

Finds the ln value of the values in a time series or of a number.

Logarithms with base numbers that equal euler's number (e= 2,718281828…) is called natural logarithms. The logarithm to a number x, is the exponent c, which the base number must be raised with to get the number x.

$$e^c = x \leftrightarrow \ln x = c$$

The input value must be a positive, real number larger than 0, if not, the function returns an empty value.

Syntax

• LN(t|d)

Description

#	Type	Description
1	t	Time series
1	d	Number

Examples

Example 1: LN(t)

Temperature_hour_VV = @LN(@t('Temperature_hour_raw'))

Example 2: LN(d)

ResultTs = @LN(1)

Example 2 returns the number 0 for all rows.