# How to check a GeoJSON file

**URL:** <https://talk.observablehq.com/t/how-to-check-a-geojson-file/7575>\
**Category:** Help\
**Created:** [January 30, 2023, 3:47pm UTC](https://talk.observablehq.com/t/how-to-check-a-geojson-file/7575 "2023-01-30T15:47:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![EE2dev](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.observablehq.com/ee2dev/32/695_2.png) [@EE2dev](https://talk.observablehq.com/u/EE2dev)\
**Post date:** [January 30, 2023, 3:47pm UTC](https://talk.observablehq.com/t/how-to-check-a-geojson-file/7575/1 "2023-01-30T15:47:06Z")

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I want to visualize a GeoJSON file with Plot here:

[https://observablehq.com/d/5758f59e729bc58e](https://observablehq.com/d/5758f59e729bc58e)

When you uncomment the // fill option, the machine heats up and eventually hangs up and the site becomes unresponsive.

What is a good way to examine and fix the issue which seems to come from the GeoJSON file? E.g. maybe some polygons are not specified properly

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**Author:** ![Fil](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.observablehq.com/fil/32/207_2.png) [@Fil](https://talk.observablehq.com/u/Fil)\
**Post date:** [January 30, 2023, 4:18pm UTC](https://talk.observablehq.com/t/how-to-check-a-geojson-file/7575/2 "2023-01-30T16:18:54Z")

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Here’s the _panacea_:

```auto
import {rewind} from "@fil/rewind"
Plot.geo(rewind(stubborn geojson), {…})

```

Solves all your winding order issues! Very few adverse effects!

![](https://canada1.discourse-cdn.com/flex030/uploads/observablehq/original/2X/2/29398face55f4dd7879323bcb00877318ff674ce.jpeg)

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<div class="post-metadata">

**Author:** ![EE2dev](https://yyz2.discourse-cdn.com/flex030/user_avatar/talk.observablehq.com/ee2dev/32/695_2.png) [@EE2dev](https://talk.observablehq.com/u/EE2dev)\
**Post date:** [January 30, 2023, 4:23pm UTC](https://talk.observablehq.com/t/how-to-check-a-geojson-file/7575/3 "2023-01-30T16:23:03Z")

</div>

😂 Thanks - worked perfectly!