So to update this thread, I have integrated addresses from CT Open Data dataset and also updated the wiki page ( https://wiki.openstreetmap.org/wiki/Connecticut/Western_COG_Building_Import)
The whole dataset can be looked at: https://drive.google.com/file/d/10hUl09WSmK-I8h1hkMlELIGwDYsEziSe/view?usp=sharing For quick loading I also made a subset for one town (Westport): https://drive.google.com/file/d/1oMSbHXpPY5eLSHhGlikGy2uudyq3VyoV/view?usp=sharing If there is any issue, please let us know. On the side note of the CT Open Data buildings suitability for import I found a way how to simplify all buildings in an automated way in python. Here is a quick comparison of before/after https://files.slack.com/files-pri/T029HV94T-F01AD0FNFD3/simplified.png (you need to have Slack account) It doesn't look so bad and we could consider it for a next round of import. Just for a future reference in case someone would need to do the same, the python code is: import geopandas as gpd import pandas as pd from shapely import speedups speedups.enable() address = gpd.read_file("Connecticut_Buildings_with_Addresses_experimental.shp") simple = address.simplify(0.000005, preserve_topology=True) simple.to_file('Buildings-simplified.geojson', driver='GeoJSON') On Sat, Aug 29, 2020 at 6:50 PM <joe.saple...@charter.net> wrote: > I was going to look at the buildings too. I’ve used a tool in ArcGIS to > correct some pretty awful buildings, but I couldn’t download them either. > If there is no hurry, I’d check in again with the contact on Monday. It > would be nice to have the buildings with addresses on them. > > > > Joe > > > > *From:* Yury Yatsynovich <yury.yatsynov...@gmail.com> > *Sent:* Saturday, August 29, 2020 5:05 PM > *To:* Julien Lepiller <o...@lepiller.eu> > *Cc:* impo...@openstreetmap.org; talk-us@openstreetmap.org > *Subject:* Re: [Talk-us] [Imports] Import WestCOG building footprints in > south-west Connecticut > > > > Hi Julien, > > Unfortunately, I have limited knowledge on the data quality as I wasn't > able to download it (the server returns error). I let the CT point of > contact (Scott) know about the problem -- he mentioned in our communication > that he forwarded the issue to the tech support team, but I haven't heard > from them since then and I'm still unable to download it. > > > > On Sat, Aug 29, 2020, 4:57 PM Julien Lepiller <o...@lepiller.eu> wrote: > > So, it's been a week since that last message. Do you think we should > import addresses and buildings at the same time? Should we import the > buildings first and care about addresses later? > > Yury, what are your thoughts about the data source quality? Do you > think it's a good idea to import from WestCOG and maybe rely on CT data > for the rest of CT? I tried playing with the data and I didn't see any > difference between drawing the buildings from scratch and having to > simplify and correct CT's data. > > Thanks! > > Le Sat, 22 Aug 2020 19:36:23 -0400, > Martin Machyna <mach...@gmail.com> a écrit : > > > Thank Julien for pushing this forward! > > > > yeah, I tried to get addresses from here: > > > http://geodata-ctmaps.opendata.arcgis.com/datasets/bfa7da83da384c2aa809882179369dc4_0/features/305004 > > and add them on top of the westCOG buildings. > > > > The data is a big mess because it's a join_table of like 30 different > > address databases. I lost a bit of motivation there, but I could have > > a look at it again. > > > > Martin > > > > On Sat, Aug 22, 2020 at 2:19 PM Julien Lepiller <o...@lepiller.eu> > > wrote: > > > > > Le Sat, 22 Aug 2020 13:30:02 -0400, > > > Yury Yatsynovich <yury.yatsynov...@gmail.com> a écrit : > > > > > > > Hi Julien, > > > > The following communication that I've had recently with a CT > > > > official might be of interest to you: > > > > > > > > > > > > > > Oh, great! I think we already saw this data (I tried to contact them > > > too, but never got a reply :/). From what we saw (I think it was in > > > February?) the footprints have simplification issues (see > > > https://files.slack.com/files-pri/T029HV94T-FTDGDHXTM/image.png for > > > instance) where they are too detailed, not square enough, etc. Some > > > buildings also have holes in them, when there's none in the imagery. > > > > > > So I think it's too bad to be used directly, without a lot of manual > > > effort to simplify, square and redraw the shapes. However, the > > > address data is very interesting, so maybe we could extract from > > > it? Or we could use a separate dataset if they have addresses > > > separately. > > > > > > _______________________________________________ > > > Imports mailing list > > > impo...@openstreetmap.org > > > https://lists.openstreetmap.org/listinfo/imports > > > > > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-us > > _______________________________________________ > Imports mailing list > impo...@openstreetmap.org > https://lists.openstreetmap.org/listinfo/imports >
_______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us