pyspark.sql.functions.log2#

pyspark.sql.functions.log2(col)[source]#

Returns the base-2 logarithm of the argument.

New in version 1.5.0.

Changed in version 3.4.0: Supports Spark Connect.

Parameters

colColumn or str: a column to calculate logariphm for.

Returns

Column: logariphm of given value.

Examples

>>> from pyspark.sql import functions as sf
>>> spark.range(10).select("*", sf.log2('id')).show()
+---+------------------+
| id|          LOG2(id)|
+---+------------------+
|  0|              NULL|
|  1|               0.0|
|  2|               1.0|
|  3| 1.584962500721...|
|  4|               2.0|
|  5| 2.321928094887...|
|  6| 2.584962500721...|
|  7| 2.807354922057...|
|  8|               3.0|
|  9|3.1699250014423...|
+---+------------------+