Expr.arccosh

methodView source ↗

def arccosh() -> Expr

Categories: numeric

Calculate the inverse hyperbolic cosine of the element value.

Examples

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf = tf.select(td.col("val"), td.col("val").arccosh().alias("arccosh"))
>>>
┌──────┬──────────┐
│ val  ┆ arccosh  │
│ ---  ┆ ---      │
│ f64  ┆ f64      │
╞══════╪══════════╡
│ 0.1  ┆ NaN      │
│ 1.5  ┆ 0.962424 │
│ 1.8  ┆ 1.192911 │
│ 6.0  ┆ 2.477889 │
│ 6.0  ┆ 2.477889 │
│ 7.5  ┆ 2.703576 │
│ null ┆ null     │
└──────┴──────────┘