240 lines
7.2 KiB
Markdown
240 lines
7.2 KiB
Markdown
---
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title: toInt() function
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description: >
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`toInt()` converts all values in the `_value` column to integer types.
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menu:
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flux_v0_ref:
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name: toInt
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parent: universe
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identifier: universe/toInt
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weight: 101
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flux/v0/tags: [transformations, type-conversions]
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introduced: 0.7.0
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---
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<!------------------------------------------------------------------------------
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IMPORTANT: This page was generated from comments in the Flux source code. Any
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edits made directly to this page will be overwritten the next time the
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documentation is generated.
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To make updates to this documentation, update the function comments above the
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function definition in the Flux source code:
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https://github.com/influxdata/flux/blob/master/stdlib/universe/universe.flux#L4667-L4667
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Contributing to Flux: https://github.com/influxdata/flux#contributing
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Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
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------------------------------------------------------------------------------->
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`toInt()` converts all values in the `_value` column to integer types.
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#### Supported types and behaviors
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`toInt()` behavior depends on the `_value` column type:
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| _value type | Returned value |
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| :---------- | :---------------------------------------------- |
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| string | Integer equivalent of the numeric string |
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| bool | 1 (true) or 0 (false) |
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| duration | Number of nanoseconds in the specified duration |
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| time | Equivalent nanosecond epoch timestamp |
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| float | Value truncated at the decimal |
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| uint | Integer equivalent of the unsigned integer |
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##### Function type signature
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```js
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(<-tables: stream[{A with _value: B}]) => stream[{A with _value: B, _value: int}]
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```
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{{% caption %}}
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For more information, see [Function type signatures](/flux/v0/function-type-signatures/).
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{{% /caption %}}
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## Parameters
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### tables
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Input data. Default is piped-forward data (`<-`).
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## Examples
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- [Convert a float _value column to integers](#convert-a-float-_value-column-to-integers)
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- [Convert a boolean _value column to integers](#convert-a-boolean-_value-column-to-integers)
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- [Convert a uinteger _value column to an integers](#convert-a-uinteger-_value-column-to-an-integers)
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### Convert a float _value column to integers
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```js
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import "sampledata"
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sampledata.float()
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|> toInt()
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| _time | *tag | _value |
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| -------------------- | ---- | ------- |
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| 2021-01-01T00:00:00Z | t1 | -2.18 |
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| 2021-01-01T00:00:10Z | t1 | 10.92 |
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| 2021-01-01T00:00:20Z | t1 | 7.35 |
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| 2021-01-01T00:00:30Z | t1 | 17.53 |
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| 2021-01-01T00:00:40Z | t1 | 15.23 |
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| 2021-01-01T00:00:50Z | t1 | 4.43 |
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| _time | *tag | _value |
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| -------------------- | ---- | ------- |
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| 2021-01-01T00:00:00Z | t2 | 19.85 |
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| 2021-01-01T00:00:10Z | t2 | 4.97 |
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| 2021-01-01T00:00:20Z | t2 | -3.75 |
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| 2021-01-01T00:00:30Z | t2 | 19.77 |
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| 2021-01-01T00:00:40Z | t2 | 13.86 |
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| 2021-01-01T00:00:50Z | t2 | 1.86 |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | -2 | t1 |
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| 2021-01-01T00:00:10Z | 10 | t1 |
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| 2021-01-01T00:00:20Z | 7 | t1 |
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| 2021-01-01T00:00:30Z | 17 | t1 |
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| 2021-01-01T00:00:40Z | 15 | t1 |
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| 2021-01-01T00:00:50Z | 4 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 19 | t2 |
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| 2021-01-01T00:00:10Z | 4 | t2 |
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| 2021-01-01T00:00:20Z | -3 | t2 |
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| 2021-01-01T00:00:30Z | 19 | t2 |
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| 2021-01-01T00:00:40Z | 13 | t2 |
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| 2021-01-01T00:00:50Z | 1 | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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### Convert a boolean _value column to integers
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```js
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import "sampledata"
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sampledata.bool()
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|> toInt()
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| _time | *tag | _value |
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| -------------------- | ---- | ------- |
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| 2021-01-01T00:00:00Z | t1 | true |
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| 2021-01-01T00:00:10Z | t1 | true |
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| 2021-01-01T00:00:20Z | t1 | false |
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| 2021-01-01T00:00:30Z | t1 | true |
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| 2021-01-01T00:00:40Z | t1 | false |
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| 2021-01-01T00:00:50Z | t1 | false |
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| _time | *tag | _value |
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| -------------------- | ---- | ------- |
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| 2021-01-01T00:00:00Z | t2 | false |
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| 2021-01-01T00:00:10Z | t2 | true |
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| 2021-01-01T00:00:20Z | t2 | false |
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| 2021-01-01T00:00:30Z | t2 | true |
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| 2021-01-01T00:00:40Z | t2 | true |
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| 2021-01-01T00:00:50Z | t2 | false |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 1 | t1 |
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| 2021-01-01T00:00:10Z | 1 | t1 |
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| 2021-01-01T00:00:20Z | 0 | t1 |
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| 2021-01-01T00:00:30Z | 1 | t1 |
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| 2021-01-01T00:00:40Z | 0 | t1 |
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| 2021-01-01T00:00:50Z | 0 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 0 | t2 |
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| 2021-01-01T00:00:10Z | 1 | t2 |
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| 2021-01-01T00:00:20Z | 0 | t2 |
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| 2021-01-01T00:00:30Z | 1 | t2 |
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| 2021-01-01T00:00:40Z | 1 | t2 |
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| 2021-01-01T00:00:50Z | 0 | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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### Convert a uinteger _value column to an integers
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```js
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import "sampledata"
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sampledata.uint()
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|> toInt()
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```
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{{< expand-wrapper >}}
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{{% expand "View example input and output" %}}
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#### Input data
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| _time | _value | *tag |
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| -------------------- | -------------------- | ---- |
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| 2021-01-01T00:00:00Z | 18446744073709551614 | t1 |
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| 2021-01-01T00:00:10Z | 10 | t1 |
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| 2021-01-01T00:00:20Z | 7 | t1 |
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| 2021-01-01T00:00:30Z | 17 | t1 |
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| 2021-01-01T00:00:40Z | 15 | t1 |
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| 2021-01-01T00:00:50Z | 4 | t1 |
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| _time | _value | *tag |
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| -------------------- | -------------------- | ---- |
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| 2021-01-01T00:00:00Z | 19 | t2 |
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| 2021-01-01T00:00:10Z | 4 | t2 |
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| 2021-01-01T00:00:20Z | 18446744073709551613 | t2 |
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| 2021-01-01T00:00:30Z | 19 | t2 |
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| 2021-01-01T00:00:40Z | 13 | t2 |
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| 2021-01-01T00:00:50Z | 1 | t2 |
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#### Output data
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | -2 | t1 |
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| 2021-01-01T00:00:10Z | 10 | t1 |
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| 2021-01-01T00:00:20Z | 7 | t1 |
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| 2021-01-01T00:00:30Z | 17 | t1 |
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| 2021-01-01T00:00:40Z | 15 | t1 |
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| 2021-01-01T00:00:50Z | 4 | t1 |
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| _time | _value | *tag |
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| -------------------- | ------- | ---- |
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| 2021-01-01T00:00:00Z | 19 | t2 |
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| 2021-01-01T00:00:10Z | 4 | t2 |
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| 2021-01-01T00:00:20Z | -3 | t2 |
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| 2021-01-01T00:00:30Z | 19 | t2 |
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| 2021-01-01T00:00:40Z | 13 | t2 |
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| 2021-01-01T00:00:50Z | 1 | t2 |
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{{% /expand %}}
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{{< /expand-wrapper >}}
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