<div dir="ltr">So to update this thread, I have integrated addresses from CT Open Data dataset and also updated the wiki page (<a href="https://wiki.openstreetmap.org/wiki/Connecticut/Western_COG_Building_Import">https://wiki.openstreetmap.org/wiki/Connecticut/Western_COG_Building_Import</a>)<div><br></div><div>The whole dataset can be looked at: <a href="https://drive.google.com/file/d/10hUl09WSmK-I8h1hkMlELIGwDYsEziSe/view?usp=sharing">https://drive.google.com/file/d/10hUl09WSmK-I8h1hkMlELIGwDYsEziSe/view?usp=sharing</a><br>For quick loading I also made a subset for one town (Westport): <a href="https://drive.google.com/file/d/1oMSbHXpPY5eLSHhGlikGy2uudyq3VyoV/view?usp=sharing">https://drive.google.com/file/d/1oMSbHXpPY5eLSHhGlikGy2uudyq3VyoV/view?usp=sharing</a><br><br>If there is any issue, please let us know.<br><br>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.<br>Here is a quick comparison of before/after <a href="https://files.slack.com/files-pri/T029HV94T-F01AD0FNFD3/simplified.png">https://files.slack.com/files-pri/T029HV94T-F01AD0FNFD3/simplified.png</a> (you need to have Slack account)<br>It doesn't look so bad and we could consider it for a next round of import.<br><br>Just for a future reference in case someone would need to do the same, the python code is:<br><br>import geopandas as gpd<br>import pandas as pd<br>from shapely import speedups</div><div>speedups.enable()</div><div><br>address = gpd.read_file("Connecticut_Buildings_with_Addresses_experimental.shp")<br>simple = address.simplify(0.000005, preserve_topology=True)<br>simple.to_file('Buildings-simplified.geojson', driver='GeoJSON')<br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Aug 29, 2020 at 6:50 PM <<a href="mailto:joe.sapletal@charter.net">joe.sapletal@charter.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div lang="EN-US"><div class="gmail-m_6400492716374136202WordSection1"><p class="MsoNormal">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.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Joe<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0in 0in"><p class="MsoNormal"><b>From:</b> Yury Yatsynovich <<a href="mailto:yury.yatsynovich@gmail.com" target="_blank">yury.yatsynovich@gmail.com</a>> <br><b>Sent:</b> Saturday, August 29, 2020 5:05 PM<br><b>To:</b> Julien Lepiller <<a href="mailto:osm@lepiller.eu" target="_blank">osm@lepiller.eu</a>><br><b>Cc:</b> <a href="mailto:imports@openstreetmap.org" target="_blank">imports@openstreetmap.org</a>; <a href="mailto:talk-us@openstreetmap.org" target="_blank">talk-us@openstreetmap.org</a><br><b>Subject:</b> Re: [Talk-us] [Imports] Import WestCOG building footprints in south-west Connecticut<u></u><u></u></p></div><p class="MsoNormal"><u></u> <u></u></p><div><p class="MsoNormal">Hi Julien,<u></u><u></u></p><div><p class="MsoNormal">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. <u></u><u></u></p></div></div><p class="MsoNormal"><u></u> <u></u></p><div><div><p class="MsoNormal">On Sat, Aug 29, 2020, 4:57 PM Julien Lepiller <<a href="mailto:osm@lepiller.eu" target="_blank">osm@lepiller.eu</a>> wrote:<u></u><u></u></p></div><blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0in 0in 0in 6pt;margin-left:4.8pt;margin-right:0in"><p class="MsoNormal">So, it's been a week since that last message. Do you think we should<br>import addresses and buildings at the same time? Should we import the<br>buildings first and care about addresses later?<br><br>Yury, what are your thoughts about the data source quality? Do you<br>think it's a good idea to import from WestCOG and maybe rely on CT data<br>for the rest of CT? I tried playing with the data and I didn't see any<br>difference between drawing the buildings from scratch and having to<br>simplify and correct CT's data.<br><br>Thanks!<br><br>Le Sat, 22 Aug 2020 19:36:23 -0400,<br>Martin Machyna <<a href="mailto:machyna@gmail.com" target="_blank">machyna@gmail.com</a>> a écrit :<br><br>> Thank Julien for pushing this forward!<br>> <br>> yeah, I tried to get addresses from here:<br>> <a href="http://geodata-ctmaps.opendata.arcgis.com/datasets/bfa7da83da384c2aa809882179369dc4_0/features/305004" target="_blank">http://geodata-ctmaps.opendata.arcgis.com/datasets/bfa7da83da384c2aa809882179369dc4_0/features/305004</a><br>> and add them on top of the westCOG buildings.<br>> <br>> The data is a big mess because it's a join_table of like 30 different<br>> address databases. I lost a bit of motivation there, but I could have<br>> a look at it again.<br>> <br>> Martin<br>> <br>> On Sat, Aug 22, 2020 at 2:19 PM Julien Lepiller <<a href="mailto:osm@lepiller.eu" target="_blank">osm@lepiller.eu</a>><br>> wrote:<br>> <br>> > Le Sat, 22 Aug 2020 13:30:02 -0400,<br>> > Yury Yatsynovich <<a href="mailto:yury.yatsynovich@gmail.com" target="_blank">yury.yatsynovich@gmail.com</a>> a écrit :<br>> > <br>> > > Hi Julien,<br>> > > The following communication that I've had recently with a CT<br>> > > official might be of interest to you:<br>> > ><br>> > > <br>> ><br>> > Oh, great! I think we already saw this data (I tried to contact them<br>> > too, but never got a reply :/). From what we saw (I think it was in<br>> > February?) the footprints have simplification issues (see<br>> > <a href="https://files.slack.com/files-pri/T029HV94T-FTDGDHXTM/image.png" target="_blank">https://files.slack.com/files-pri/T029HV94T-FTDGDHXTM/image.png</a> for<br>> > instance) where they are too detailed, not square enough, etc. Some<br>> > buildings also have holes in them, when there's none in the imagery.<br>> ><br>> > So I think it's too bad to be used directly, without a lot of manual<br>> > effort to simplify, square and redraw the shapes. However, the<br>> > address data is very interesting, so maybe we could extract from<br>> > it? Or we could use a separate dataset if they have addresses<br>> > separately.<br>> ><br>> > _______________________________________________<br>> > Imports mailing list<br>> > <a href="mailto:Imports@openstreetmap.org" target="_blank">Imports@openstreetmap.org</a><br>> > <a href="https://lists.openstreetmap.org/listinfo/imports" target="_blank">https://lists.openstreetmap.org/listinfo/imports</a><br>> > <br><br><br>_______________________________________________<br>Talk-us mailing list<br><a href="mailto:Talk-us@openstreetmap.org" target="_blank">Talk-us@openstreetmap.org</a><br><a href="https://lists.openstreetmap.org/listinfo/talk-us" target="_blank">https://lists.openstreetmap.org/listinfo/talk-us</a><u></u><u></u></p></blockquote></div></div></div>_______________________________________________<br>
Imports mailing list<br>
<a href="mailto:Imports@openstreetmap.org" target="_blank">Imports@openstreetmap.org</a><br>
<a href="https://lists.openstreetmap.org/listinfo/imports" rel="noreferrer" target="_blank">https://lists.openstreetmap.org/listinfo/imports</a><br>
</blockquote></div>