# Article: Displaying a gridded dataset on a web-based map (Holoviews + Datashader)

**URL:** <https://discourse.holoviz.org/t/article-displaying-a-gridded-dataset-on-a-web-based-map-holoviews-datashader/2155>\
**Category:** Showcase\
**Tags:** datashader, holoviews\
**Created:** [April 18, 2021, 11:44pm UTC](https://discourse.holoviz.org/t/article-displaying-a-gridded-dataset-on-a-web-based-map-holoviews-datashader/2155 "2021-04-18T23:44:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![SteveAKopias](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/steveakopias/32/1951_2.png) [@SteveAKopias](https://discourse.holoviz.org/u/SteveAKopias)\
**Post date:** [April 18, 2021, 11:44pm UTC](https://discourse.holoviz.org/t/article-displaying-a-gridded-dataset-on-a-web-based-map-holoviews-datashader/2155/1 "2021-04-18T23:44:07Z")

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I’ve just published an article on Towards Data Science providing a step by step guide on the whole “How to display a large GeoTIFF on a tilemap with the correct coordinates and actual data showing up in a hover tooltip” topic I’ve been asking about in the last few weeks.  
[https://towardsdatascience.com/displaying-a-gridded-dataset-on-a-web-based-map-ad6bbe90247f](https://towardsdatascience.com/displaying-a-gridded-dataset-on-a-web-based-map-ad6bbe90247f)  
It’s pretty basic and very verbose, but I hope it will help others getting friendly with Holoviews while facing a similar task. I tried not to misrepresent anything, but please, let me know if you think there are any factual mistakes in it.

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**Author:** ![Marc](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/marc/32/24_2.png) [@Marc](https://discourse.holoviz.org/u/Marc)\
**Post date:** [April 19, 2021, 4:32am UTC](https://discourse.holoviz.org/t/article-displaying-a-gridded-dataset-on-a-web-based-map-holoviews-datashader/2155/2 "2021-04-19T04:32:34Z")

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Really nice article. Thanks for creating and sharing it.

[/uploads/default/original/2X/0/0b91de7cd726c7fec4d35308c145b8042a80126f.mp4](https://discourse.holoviz.org/uploads/default/original/2X/0/0b91de7cd726c7fec4d35308c145b8042a80126f.mp4)

I shared it on twitter here [https://twitter.com/MarcSkovMadsen/status/1384001480961576965?s=20](https://twitter.com/MarcSkovMadsen/status/1384001480961576965?s=20)