Wikipedia:Graphics Lab/Map workshop/Archive/Sep 2026

This is an archive of past discussions on Wikipedia:Graphics Lab, for the period 2026.
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Archives of 2026:

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Interactive tornado map for European Tornadoes in 2026

Hi! I am trying to create an interactive map for the List of European Tornadoes in 2026 article using the International Fujita (IF) scale.

Could someone tell me or show me how to do it?

⚡ StormL00ver ⚡ 04:36, 4 September 2026 (UTC)

@StormL00ver: How much interactivity are you expecting? If it's just some markers (optionally with shapes for tracks of the tornados) and popup labels when markers are clicked, learn from this example, which can be added to articles as follows. cmɢʟee τaʟκ (please add {{ping|cmglee}} to your reply) 21:09, 5 September 2026 (UTC)

Free CAT bus route map (source file) **Red**: Jetty to Komtar, **Blue**: Komtar to Jetty

@Cmglee: In terms of interactivity I was thinking about when I click or hover over a tornado's label it should tell me its rating, its width and its path length. ⚡ StormL00ver ⚡ 04:31, 6 September 2026 (UTC)

@StormL00ver: Such a text label as in my example should work. You can even have tables in the tool tips with HTML like

<table><tr><td align=right>foo</td></tr><tr><td>Bar</td></tr></table>

but you'd likely need to write a program to generate the map file. cmɢʟee τaʟκ (please add {{ping|cmglee}} to your reply) 11:04, 6 September 2026 (UTC)

https://commons.wikimedia.org/wiki/Data:List_of_European_tornadoes_in_2026.map like this? ⚡ StormL00ver ⚡ 11:47, 6 September 2026 (UTC)

Looks good. Just a thought: the markers are rather small so I can't really tell where the markers are. I suppose if the map is to contain hundreds or thousands of tornados, they can't be too big. cmɢʟee τaʟκ (please add {{ping|cmglee}} to your reply) 16:50, 6 September 2026 (UTC)

How on earth do I make this geoJSON map???

Hi all, I've just been trying to convert this map into a Commons data: namespace .map file, but every time I try entering the GEOjson data, all I get is "Syntax error". I've been trying for the past 6 HOURS, but no matter what I try, I get the same cryptic error message.

What I'm trying to make is an interactive map of Ireland's counties, so that you can click on each county and its name pops up. If someone could figure out how to upload this data, and show me where I'm going wrong, I would be very grateful. The data is available as a direct download on the source website, and is CC-BY (free use). The file size is too large to upload to commons as-is, so I've been trying to simplify it using Mapshaper

If anyone's interested, I can paste the data I've tried to upload on my user sandbox. Thanks in advance! Let Me Edit It (talk) 17:55, 7 September 2026 (UTC)