LOG2 macro

The LOG2 macro is available only in HCL® Campaign.

Syntax

LOG2(data)

Parameters

data

The numerical values to compute the base2 logarithm of. This can be a constant value, a column, a cell range, or an expression evaluating to any of the above. For the format definition of data, see the "Macro Function Parameters" section in the chapter in this guide for your HCL product.

Description

LOG2 calculates the base-2 logarithm of values in the specified data range. It returns one new column for each input column, each containing the base2 logarithm of numbers in the corresponding input column.

Note: All values in the specified data range must be greater than zero. Otherwise, a blank cell is returned for each invalid input.

Examples


`TEMP = LOG2(8)` Creates a new column named `TEMP` containing the value three.
`TEMP = LOG2(V1)` Creates a new column named `TEMP`, where each value is the base2 log of the contents of column `V1`.
`TEMP = LOG2(V1:V3)` Creates three new columns named `TEMP`, `VX`, and `VY`. The values in the `TEMP` column are the base2 logs of the contents of column `V1`, the values of the `VX` column are the base2 logs of the contents of column `V2`, and the values of the `VY` column are the base2 logs of the contents of column `V3`.
`TEMP = LOG2(V1[10:20])` Creates a new column named `TEMP`, where the first 11 cells contain the base-2 logs of the values in rows 10-20 of column `V1`. The other cells in `TEMP` are empty.
`TEMP = LOG2(V1[1:5]:V2)` Creates two new columns named `TEMP` and `VX`, each with values in rows 1-5 (the other cells are empty). The values in column `TEMP` are the base-2 logs of the corresponding rows of column `V1`, and the values in column `VX` are the base-2 logs of the corresponding rows of column `V2`.

Related functions


Function	Description
`LN` or `LOG`	Computes the natural log of the contents of the specified data range
`LOG10`	Computes the log base10 of the contents of the specified data range
`POW`	Exponential power