math log
For math.
Returns the logarithm for an arbitrary base.
Command Type
built-in
Signature
> math log {flags} (base) ...rest
Parameters
base: Base for which the logarithm should be computed....rest: The cell-paths/columns to operate on.
Input/output types:
| input | output |
|---|---|
| number | float |
| list<number> | list<float> |
| range | list<number> |
| record | record |
Examples
Get the logarithm of 100 to the base 10.
> 100 | math log 10
2.0Get the log2 of a list of values.
> [16 8 4] | math log 2
╭───┬──────╮
│ 0 │ 4.00 │
│ 1 │ 3.00 │
│ 2 │ 2.00 │
╰───┴──────╯
Compute the log base 10 of list-valued columns in a record.
> {alice: [1 10 100], bob: [1000 10000]} | math log 10
╭───────┬──────────────╮
│ │ ╭───┬──────╮ │
│ alice │ │ 0 │ 0.00 │ │
│ │ │ 1 │ 1.00 │ │
│ │ │ 2 │ 2.00 │ │
│ │ ╰───┴──────╯ │
│ │ ╭───┬──────╮ │
│ bob │ │ 0 │ 3.00 │ │
│ │ │ 1 │ 4.00 │ │
│ │ ╰───┴──────╯ │
╰───────┴──────────────╯Compute the log base 10 of a single column using a cell path.
> {alice: [1 10 100], bob: [1000 10000]} | math log 10 alice
╭───────┬───────────────╮
│ │ ╭───┬──────╮ │
│ alice │ │ 0 │ 0.00 │ │
│ │ │ 1 │ 1.00 │ │
│ │ │ 2 │ 2.00 │ │
│ │ ╰───┴──────╯ │
│ │ ╭───┬───────╮ │
│ bob │ │ 0 │ 1000 │ │
│ │ │ 1 │ 10000 │ │
│ │ ╰───┴───────╯ │
╰───────┴───────────────╯Ported from nushell/nushell.github.io. Copyright (c) 2021 Nushell Project. MIT License.