---
title: geo.shapeData() function
description: >
  `geo.shapeData()` renames existing latitude and longitude fields to **lat** and **lon**
  and adds an **s2\_cell\_id** tag.
menu:
  flux_v0_ref:
    name: geo.shapeData
    parent: experimental/geo
    identifier: experimental/geo/shapeData
weight: 201
---

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

IMPORTANT: This page was generated from comments in the Flux source code. Any
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function definition in the Flux source code:

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Contributing to Flux: https://github.com/influxdata/flux#contributing
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`geo.shapeData()` renames existing latitude and longitude fields to **lat** and **lon**
and adds an **s2\_cell\_id** tag.

Use `geo.shapeData()` to ensure geotemporal data meets the requirements of the Geo package:

1. Rename existing latitude and longitude fields to `lat` and `lon`.
2. Pivot fields into columns based on `_time`.
3. Generate `s2_cell_id` tags using `lat` and `lon` values and a specified [S2 cell level](https://s2geometry.io/resources/s2cell_statistics.html).

##### Function type signature

```js
(
    <-tables: stream[{C with _field: string}],
    latField: A,
    level: int,
    lonField: B,
) => stream[{D with s2_cell_id: string, lon: float, lat: float}] where A: Equatable, B: Equatable
```

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

## Parameters

### latField
({{< req >}})
Name of the existing field that contains the latitude value in decimal degrees (WGS 84).

Field is renamed to `lat`.

### lonField
({{< req >}})
Name of the existing field that contains the longitude value in decimal degrees (WGS 84).

Field is renamed to `lon`.

### level
({{< req >}})
[S2 cell level](https://s2geometry.io/resources/s2cell_statistics.html)
to use when generating the S2 cell ID token.



### tables

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