log1p

Computes the natural logarithm of the given value plus one. Supports Spark Connect.

For the corresponding Databricks SQL function, see log1p function.

Syntax

Python
from pyspark.databricks.sql import functions as dbf

dbf.log1p(col=<col>)

Parameter	Type	Description
`col`	`pyspark.sql.Column or column name`	column to calculate natural logarithm for.

pyspark.sql.Column: natural logarithm of the "given value plus one".

Python
from pyspark.databricks.sql import functions as dbf
spark.range(1).select(dbf.log1p(dbf.e())).show()

Output
+------------------+
|        LOG1P(E())|
+------------------+
|1.3132616875182...|
+------------------+

Python
from pyspark.databricks.sql import functions as dbf
spark.range(1).select(dbf.log(dbf.e() + 1)).show()

Output
+------------------+
|     ln((E() + 1))|
+------------------+
|1.3132616875182...|
+------------------+