cot
Calcule la cotangente de la colonne d’entrée. Prend en charge Spark Connect.
Pour la fonction Databricks SQL correspondante, consultez la fonctioncot.
Syntaxe
Python
from pyspark.sql import functions as dbf
dbf.cot(col=<col>)
parameter
parameter | Type | Description |
|---|---|---|
|
| angle en radians. |
Renvoie
pyspark.sql.Column: cotangente de l'angle.
Exemples
Python
from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (PI() / 4), (PI() / 16) AS TAB(value)").select("*", dbf.cot("value")).show()
Output
+-------------------+------------------+
| value| COT(value)|
+-------------------+------------------+
| 0.7853981633974...|1.0000000000000...|
|0.19634954084936...| 5.027339492125...|
+-------------------+------------------+
Python
from pyspark.sql import functions as dbf
spark.sql("SELECT * FROM VALUES (0.0), (FLOAT('NAN')), (NULL) AS TAB(value)").select("*", dbf.cot("value")).show()
Output
+-----+----------+
|value|COT(value)|
+-----+----------+
| 0.0| Infinity|
| NaN| NaN|
| NULL| NULL|
+-----+----------+