atan

Calculez la tangente inverse de la colonne d'entrée. Prend en charge Spark Connect.

Pour la fonction Databricks SQL correspondante, consultez la fonctionatan.

Syntaxe

Python

from pyspark.sql import functions as dbf

dbf.atan(col=<col>)

parameter

parameter	Type	Description
col	pyspark.sql.Column or column name	colonne cible sur laquelle effectuer le compute.

parameter	Type	Description
col	pyspark.sql.Column or column name	colonne cible sur laquelle effectuer le compute.

Renvoie

pyspark.sql.Column: tangente inverse de col, comme si calculé par java.lang.Math.atan()

Exemples

Python

from pyspark.sql import functions as dbf
df = spark.createDataFrame([(-0.5,), (0.0,), (0.5,)], ["value"])
df.select("*", dbf.atan(df.value)).show()

Output

+-----+-------------------+
|value|        ATAN(value)|
+-----+-------------------+
| -0.5|-0.4636476090008...|
|  0.0|                0.0|
|  0.5| 0.4636476090008...|
+-----+-------------------+

Python

from pyspark.sql import functions as dbf
spark.sql(
    "SELECT * FROM VALUES (FLOAT('NAN')), (NULL) AS TAB(value)"
).select("*", dbf.atan("value")).show()

Output

+-----+-----------+
|value|ATAN(value)|
+-----+-----------+
|  NaN|        NaN|
| NULL|       NULL|
+-----+-----------+