Growebis 的日記

Can i get some help with adding these damn buildings in Montreal?

於 2023年四月22日由 Growebis 以English發表。上一次更新在 2024年五月15日。

Edit: The imagery, according to one commenter, needs permission from the governement to be able to use it, my bad for mentioning a WMS link that i though had an open license to it.

Edit 2: Someone uploaded the database of Montreal buildings. Thanks for everyone that helped.

i swear i might have a dream of me just adding buildings in OSM but can i like, get some help with adding the buildings because this is gonna take too long. if anybody is actually reading this then if you want to help me, add buildings using Geodesie Quebec satellite as its 100% accurate , you just need to add parameters for it to function as custom satellite. https://servicescarto.mern.gouv.qc.ca/pes/services/Territoire/RESEAU_GEODESIQUE_WMS/MapServer/WMSServer

討論

由 MatthiasMatthias 於 2023年04月22日 22時20分發表的評論

Hello. Have you tried JOSM and the building extension? osm.wiki/JOSM/Plugins/BuildingsTools

由 Growebis 於 2023年04月23日 02時20分發表的評論

No, but i don’t have any experience with josm editor, let alone the extension. Also this might be a nitpick, but i like it when the buildings are detailed rather then just rectangles, as most the buildings that I’m mapping are not exactly rectangle, like they are rectangle but they have like something sticking out most of the time.

Most of the buildings that im mapping look something like this. https://imgur.com/a/frCnBB4

由 andy mackey 於 2023年04月23日 09時32分發表的評論

Several years ago I used quite a lot of time drawing outlines after getting a help request from another mapper. I spend months on his small town. He was more precise than me. He redrew quite a lot of it and did a great job. If you want it to your standard do it your self. It is easier with good images and a big screen, and the right tools…..JOSM, plus GPXes the verity image position and surveys to check for changes and details. See his work osm.org/#map=15/52.2168/-0.0795 Happy Mapping

由 MxxCon 於 2023年04月23日 17時19分發表的評論

Check if your government has open data portal from which buildings could be imported as a whole. Reach out to your local mapping community for help. They might know where to go for such data. Also check with RapiD, it might already have building shapes for you to import.

由 benoitdd 於 2023年04月25日 13時46分發表的評論

I used to draw buildings with iD, but like @MatthiasMatthias i highly recommend to use JOSM if you want to trace a lot of them. It is so much faster and clean! Really worth the time you’ll spend to learn it

From this page, it is possible to import opendata from Montreal in OpenStreetMap.

The data for buildings does exist and you could use (with JOSM and its plugin OpenData) to bring them into OSM https://donnees.montreal.ca/dataset/batiment-2d

由 benoitdd 於 2023年04月25日 14時06分發表的評論

If you try to import, you’ll have to discuss it with the local community before: https://lists.openstreetmap.org/listinfo/talk-ca

the local community of mappers in Montreal has a facebook page, I don’t know if it’s still active: osm.wiki/Category:Users_in_Montréal

由 Growebis 於 2023年04月26日 01時08分發表的評論

Thanks for the info provided, but wouldn’t importing the building data overlap with already existing building data?

由 MxxCon 於 2023年04月26日 01時52分發表的評論

There are various conflation processes. You could review every imported object or overwrite existing objects or probably the easiest, if there’s something already there, skip that.

由 cbeddow 於 2023年04月30日 16時23分發表的評論

Are you using Rapid Editor to add buildings? Looks like the AI detected buildings from Microsoft are pretty nicely matched with the Bing Maps Aerial imagery too, but would be great to see the WMS you listed get added to the aerial sources

Rapid in Montreal

由 gtalbot 於 2023年04月30日 16時25分發表的評論

Hi, the provided url does not work for me. I receive “ The request not allowed. “ error message.

I would like to have a look to see if I can help.

由 cbeddow 於 2023年04月30日 16時26分發表的評論

Are you using Rapid editor to add buildings? Looks like the AI detected buildings from Microsoft are pretty nicely matched with the Bing Maps Aerial imagery too, but would be great to see the WMS you listed get added to the aerial sources.

Rapid Montreal

由 Growebis 於 2023年05月 1日 01時07分發表的評論

To answer you question cbeddow, no, im not using the Rapid editor, im using a special ID editor provided to me by someone, i looked at some of the AI buildings from microsoft on rapid editor, and while they are aligned according to Bing, there is an offset present in Montreal so i would need to adjust every single one of them manually. Also most of them are not detailed to my liking.

To answer your question gtalbot, I dont know if i can help since i didnt get this error at all when i was using the imagery.

由 MxxCon 於 2023年05月 1日 01時40分發表的評論

Having some data everywhere is more useful than no data almost everywhere 🤷 You could add those buildings and they would be good enough and useful for most users and then you can sit around and improve them at your own pace.

由 CasGroenigen 於 2023年05月 3日 12時28分發表的評論

I added some buildings close to where you were editing. You can select the building types. I hope this helps you a little.

由 Growebis 於 2023年05月 4日 01時35分發表的評論

I do appreciate your effort CasGroenigen, i forgot to mention that bing imagery is not correctly aligned, so all the buildings you added are misaligned, also i think adding the buildings of the backyards of houses just makes the map messy in my opinion. Currently as of 2020, its 0.6, -1.54, or you can use Geodesie Quebec satellite because its by default aligned, and then align all the buildings

由 benoitdd 於 2023年05月 4日 11時10分發表的評論

I did a test (without sending the data) to import the opendata, it works fine.

I sent a request to the local community (https://lists.openstreetmap.org/listinfo/talk-ca) to work further on an import.

由 ChaireMobiliteKaligrafy 於 2023年05月 5日 18時05分發表的評論

Please do not use https://servicescarto.mern.gouv.qc.ca/pes/services/Territoire/RESEAU_GEODESIQUE_WMS/MapServer/WMSServer servers without permission from the government. These are restricted access data.

由 gtalbot 於 2023年05月 5日 19時17分發表的評論

That is what I suspected. Since I don’t have access to the site, I can’t help on importing the data.

由 AGeographer 於 2023年05月 5日 20時15分發表的評論

Hi, Based on your diary entry there is currently a discussion on https://lists.openstreetmap.org/listinfo/talk-ca. I would like to invite you to join us there.

I also would be interested to get the buildings into OSM. There is a very nice accurate buildings’ footprint data set provided by the City of Montreal since 2016, even with the expressed consent to import it into OSM. However, there is a reason why it is not yet imported: The data source doesn’t come as individual buildings for terraced houses. There is a divider layer included, however, it is not trivial to split up the data into single buildings - the way we usually enter buildings in OSM. For more see the discussion on the list.

由 Growebis 於 2023年05月 5日 23時42分發表的評論

I just subscribed to the discussion. im waiting to get any email from them.

由 AGeographer 於 2023年05月 6日 20時11分發表的評論

Hi Growebis, here is the link to our thread in the list’s archive: https://lists.openstreetmap.org/pipermail/talk-ca/2023-May/010758.html

We had the discussion in French, if you need English you could paste the content in https://www.deepl.com/translator