[OSM-talk-be] Missing windmills data ?
Seppe Santens
seppe.santens at westtoer.be
Sat Jul 10 06:37:41 UTC 2021
Hi Matthieu,
Good thing you’re cleaning up! The changeset is huge though, which makes it hard to review. It would have been easier if the work was split up into different changesets, e.g. one for each type of change: “moving manufacturer and model from name tag to manufacturer and manufacturer:type tags” for one changeset, “adding generator:output:electricity=yes” for a second changeset and so on. That would also make it easier to revert one of these big changes if something goes wrong or i fit is disputed.
That brings me to the generator:output:electricity=small_installation key/value combination. This is not documented in the wiki (as far as i can see) and to me, it doesn’t really make sense. I can understand that you want to identify smaller wind turbines, but I think the generator:output:electricity should not be used for this. Especially where you have changed an existing value in Watts (e.g. “generator:output:electricity=1800 W” into “generator:output:electricity=small_installation”), I think this is wrong. It takes away detailed information (the actual output in W). I can understand the motivation for this (filtering out small installations in queries), but I think this is not the right way to do it. Especially for the turbines that had a value in W, I would suggest to revert these edits. I’m sure we can find a consensus on how to tag/identify smaller wind turbines. We can then document this in the Wiki and after that, we can see where we should add to (or change) existing tagging.
Best regards,
Seppe
Van: Matthieu <matthieu at gaillet.be>
Verzonden: donderdag 8 juli 2021 19:18
Aan: OpenStreetMap Belgium <talk-be at openstreetmap.org>
Onderwerp: Re: [OSM-talk-be] Missing windmills data ?
Hi,
I reviewed all the nodes having "generator:source"=“wind” in Wallonia using JOSM, mostly by mass editing using various filters to ensure correct tagging.
I was surprised to see how many of them I had to edit (353 out of 499 nodes found). Most common errors were :
* Missing one of many of the mandatory tags, namely
* power<https://wiki.openstreetmap.org/wiki/Key:power>=generator<https://wiki.openstreetmap.org/wiki/Tag:power%3Dgenerator>
* generator:source<https://wiki.openstreetmap.org/wiki/Key:generator:source>=wind
* generator:output:electricity<https://wiki.openstreetmap.org/wiki/Key:generator:output:electricity>=*
* The latest being the most problematic.
* A lot had the manufacturer and model in the name field.
* By locating isolated wind turbines (most of them are arranged in farms), I was able to find a lot of private wind turbines, for them I set generator:output:electricity<https://wiki.openstreetmap.org/wiki/Key:generator:output:electricity>=small_installation to be able to isolate them in a dataset.
I hope the result is good and that I didn’t break anything. I randomly reviewed some nodes and my edits made sense.
The changeset is here if anybody wants to review : https://www.openstreetmap.org/changeset/107651694
Thanks
Matthieu
On 15 Jun 2021, at 19:31, Matthieu Gaillet <matthieu at gaillet.be<mailto:matthieu at gaillet.be>> wrote:
Salut,
J’ai récemment lu dans ce papier qu’aucune donnée précise n’était disponible sur le nombre d’éoliennes en Wallonie. https://plus.lesoir.be/378347/article/2021-06-15/eoliennes-les-communes-wallonnes-au-bord-de-la-crise-de-nerfs
Ne serait-ce pas l’occasion de mettre la communauté à l’œuvre ?
Premièrement, remonter localisation des parcs éoliens
Deuxièmement, faire un relevé sur place
Troisièmement réunir des informations plus précises sur les hauteurs et les puissances.
Les communes disposent généralement de ces informations, à priori on pourrait les obtenir sur simple demande. Parfois c’est même décrit sur un panneau informatif.
En bonus il reste à relever les éoliennes privées, surtout celles autour des exploitations agricoles.
Qu’en pensez-vous ? Comment démarrer ce genre de community-assisted survey ?
L’état des lieux : https://overpass-turbo.eu/s/18oI - Je vois déjà que le parc sur Assesse est manquant.
Matthieu
Matthieu G. (en mode mobile)
Matthieu G. (en mode mobile)
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