ln

Returns the natural logarithm of the argument. Supports Spark Connect.

For the corresponding Databricks SQL function, see ln function.

Syntax

Python

from pyspark.sql import functions as dbf

dbf.ln(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or str	A column to calculate logarithm for.

Parameter	Type	Description
col	pyspark.sql.Column or str	A column to calculate logarithm for.

Returns

pyspark.sql.Column: natural logarithm of given value.

Examples

Python

from pyspark.sql import functions as dbf
spark.range(10).select("*", dbf.ln('id')).show()

Output

+---+------------------+
| id|            ln(id)|
+---+------------------+
|  0|              NULL|
|  1|               0.0|
|  2|0.6931471805599...|
|  3|1.0986122886681...|
|  4|1.3862943611198...|
|  5|1.6094379124341...|
|  6| 1.791759469228...|
|  7|1.9459101490553...|
|  8|2.0794415416798...|
|  9|2.1972245773362...|
+---+------------------+