On Tue, 26 Mar 2019 at 13:10, Begin Daniel <jfd...@hotmail.com> wrote: > There is actually no standard “code” available since I use FME > (www.safe.com). It is a proprietary ETL application and all operations are > done using “transformers” (https://www.safe.com/transformers/). I can provide > you with the workbench I developed (a bunch of linked transformers) but you > need a license to run it. This is why I tried to describe the operations I > run on the data in the wiki. > > As you did, people may send me coordinates (bounding box) of an area they > know well. I’ll process the area and send the results back in OSM format. > Please, be reasonable on the amount of data to process ;-)
Thanks Daniel. Let me know how it looks then! Coming from an open-source background, the process is unusual to me, and I have questions about scalability - will you be able to process and provide updated data files for all of Canada then? - but if others are comfortable with it then I won't object. Some general thoughts regarding tooling as raised upthread: I was initially excited to see building footprints data as they help two quite distinct purposes: 1. they provide a mostly-automatic source of geometries for the millions of single-family houses that wouldn't be mapped in the next decade otherwise 2. they might provide a corrected and fairly accurate source of geometries in heavily-built-up areas, where GPS signal is not that reliable and it can be really difficult to get sufficiently accurate geometries from imagery, whether because it's not sufficiently high-resolution, two sets of imagery with conflicting offsets (Bing and Esri are the two best sets in Toronto, and they're off by about 1-2 m on north-south axis from each other - that's not something I can check with a consumer-grade GPS so I'm left guessing as to which is true), or non-vertical imagery (I can count the floors on supposedly top-down imagery in some cases). From what I saw, imports in the GTHA initially focused on the first case, and I think the Tasking Manager setup was mostly sufficient for those - where there is nothing currently on the map, or a few simple 2D geometries, a 4 sq km area can feasibly be done in under an hour. However, as raised by others, I would really want the working squares in Old Toronto for example to be no more than 500 m x 500 m, or no more than 1 km x 1 km in St. Catharines. I would _love_ to have the geometries to manually compare and adjust the 3D buildings already existing in the area, but it will be much slower. --Jarek _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ca
