---
title: tickscript.compute() function
description: >
  `tickscript.compute()` is an alias for `tickscript.select()` that changes a column’s name and
  optionally applies an aggregate or selector function.
menu:
  flux_v0_ref:
    name: tickscript.compute
    parent: contrib/bonitoo-io/tickscript
    identifier: contrib/bonitoo-io/tickscript/compute
weight: 301
flux/v0/tags: [transformations]
---

<!------------------------------------------------------------------------------

IMPORTANT: This page was generated from comments in the Flux source code. Any
edits made directly to this page will be overwritten the next time the
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To make updates to this documentation, update the function comments above the
function definition in the Flux source code:

https://github.com/influxdata/flux/blob/master/stdlib/contrib/bonitoo-io/tickscript/tickscript.flux#L393-L393

Contributing to Flux: https://github.com/influxdata/flux#contributing
Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md

------------------------------------------------------------------------------->

`tickscript.compute()` is an alias for `tickscript.select()` that changes a column’s name and
optionally applies an aggregate or selector function.



##### Function type signature

```js
(<-tables: B, as: string, ?column: A, ?fn: (<-: B, column: A) => stream[C]) => stream[D] where A: Equatable, C: Record, D: Record
```

{{% caption %}}
For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
{{% /caption %}}

## Parameters

### as
({{< req >}})
New column name.



### column

Column to operate on. Default is `_value`.



### fn

Aggregate or selector function to apply.



### tables

Input data. Default is piped-forward data (`<-`).