documentationln¶
Description¶
Returns natural logarithm of a numeric expression. The value should be greater than 0.
Return type¶
float64
Domain¶
This is a scalar function (calculates a single output value for a single input row.)
Categories¶
Usage¶
ln( value )
Argument |
Type |
Required |
Multiple |
Constant |
|---|---|---|---|---|
value |
numeric |
Required |
Only one |
Variable |
Examples¶
make_col ln_val:ln(@.temperature)
Returns the natural logarithm of column temperature