# ln¶

ln

Natural logarithm (e)

Result = ln(expression)

expression
spatial, non spatial scalar
Result
dimension of expression scalar

## Operation¶

For each cell, calculates the natural logarithm (e) logarithm of the cell value on expression and assigns it to the corresponding cell on Result.

## Notes¶

The cell values on expression must be greater than 0. Any cell value outside this range is assigned a missing value on Result. A cell with missing value on expression is assigned a missing value on Result.

## Group¶

This operation belongs to the group of Arithmetic operators

## Examples¶

1. • pcrcalc
binding
Result = Result.map;
Expr = Expr.map;
initial
report Result = ln(Expr);

• python
Result = ln(Expr)
 Result.map Expr.map

le or <=

log10