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[Talk-cz] Question on Fix Spiky Buildings challenge

Vlákno 19.9. - 23.9.2024, počet zpráv: 3


19.9.2024 10:34:50 (#1)
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Michal Wlodarczyk

<Michal.Wlodarczyk at tomtom.com>
12
Hi Czechia OSM Community! My team in TomTom is solving spikes on buildings in Czechia. In general users creates the building polygons as per the Czech CUZK:KM carto layer. To remove the spike present on the buildings there are certain complications as follows. * As per the Czech CUZK:KM carto layer we cannot remove the spike as it is matching with the carto layer but not with the reality * According to the imagery the spike is not present which is contradicting with the Czech CUZK:KM layer Can you please advice how we can work these issues ? Example 1: Task Link: https://maproulette.org/challenge/44790/task/225696185 Way id: way 457207851 Observation: When looked into the OSM data it is found that there is a spike at (49.9735921, 16.776278). Our editor removed the way 457207850 and aligned the way 457207851 as per ground reality. Before Data Data post GL Edits [pic1] [pic2] Example 2: Task Link: https://maproulette.org/challenge/44790/task/225696167 Way id: way 553716939 Observation: When looked into the OSM data it is found that there is a spike at (49.8575, 18.2892678). Our editor modified and aligned the building polygon way 553716939 as per ground reality. Before Data Data post GL Edits [pic3] [https://lh7-rt.googleusercontent.com/docsz/AD_4nXdCIjnMyqIaSeQE4I28U6n-DQXitk6vwoyitBwbApSURtnQiinTdrCnk0r9zgIF8hAnYL19tsRHCKcC5gRD59AplqTky0fV8tICg67TEU3lmpNgoz54jEzZHA3ARq2caLY3sEuotC3ssvC4j-WdChxvOPPf?key=9Gnn4WaPZhf8sTqRrSy80g] Example 3: Task Link: https://maproulette.org/challenge/44790/task/225696242 Way id: way 51800424 Observation: When looked into the OSM data it is found that there is a spike at (49.2225828, 16.5561804). Our editor modified and aligned the building polygon way 51800424 as per ground reality. Before Fixes After Fixes Czech CUZK:KM [https://lh7-rt.googleusercontent.com/docsz/AD_4nXdZB1DaA2l4gN7OjHXNLdE2788WysOwyPdIj0dWw7y416IpbVNJnfY-wp7BEjA-KiVUIlQmsUIIknViAoloSyb5Gww654PtJzJpqWgdEXCYCVwdHbRxr4LMRGIttk5hyOdgmOPat_qDPrs7Ym7Y9V-jbXF2?key=9Gnn4WaPZhf8sTqRrSy80g] [https://lh7-rt.googleusercontent.com/docsz/AD_4nXc5uytqlJAmf5EmXoMZiMKZDhItp1bKPNvLMzIfxBeIV59h4AgONVxzaxGTj5afR3PFwspsH1HBCYvzQTvLu14TgJnwgHRVJzkAUWYN3X7ICU-i7Fd9cb7ensyg2IiHwYj3P75wEN-O1mEGSKCItih1YY4?key=9Gnn4WaPZhf8sTqRrSy80g] [https://lh7-rt.googleusercontent.com/docsz/AD_4nXc3guAPf-kNopJbd6rno-OMSv9wvZvXgm6YZ0LNcZ0xmxcb5f1D_wXnvm0fV7xMHpz68rsbh8kmrYjazPQ9M_YTEw7IeSyVbcxZYaJfZVglPl9iH5fhVeZh0uIZ3LPciQvsLISJ0H6qW4aHJ_KB5Rl0-q7J?key=9Gnn4WaPZhf8sTqRrSy80g] Thank you Michal ------------- další část --------------- HTML příloha byla odstraněna... URL: <http://lists.openstreetmap.org/pipermail/talk-cz/attachments/20240919/3ccb8d3e/attachment-0001.htm>

23.9.2024 01:49:54 (#2)
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Jan Macura

<macurajan at gmail.com>
755 2731
Dear Michal, ad example 1) At such cases, the preferred workflow is to merge adjacent building polygons into one building, combining the values of ref:ruian:building. These are fictional splits required by technical limitations of the current cadastre. In reality, there is only one building. It solves the spike problem as a side-effect. Consult this page: https://wiki.openstreetmap.org/wiki/Cs:R%C3%9AIAN/Mapov%C3%A1n%C3%AD_budov_a_adresn%C3%ADch_m%C3%ADst#Obrys_budovy_z_vrstvy_R%C3%9AIAN_je_roz%C5%99%C3%ADznut_podivnou_lini%C3%AD H. On Thu, 19 Sept 2024 at 10:38, Michal Wlodarczyk via talk-cz < talk-cz na openstreetmap.org> wrote: zobrazit citaci
> Hi Czechia OSM Community! > > My team in TomTom is solving spikes on buildings in Czechia. > > In general users creates the building polygons as per the Czech CUZK:KM > carto layer. To remove the spike present on the buildings there are certain > complications as follows. > > - As per the Czech CUZK:KM carto layer we cannot remove the spike as > it is matching with the carto layer but not with the reality > - According to the imagery the spike is not present which is > contradicting with the Czech CUZK:KM layer > > Can you please advice how we can work these issues ? > > Example 1: > > Task Link: https://maproulette.org/challenge/44790/task/225696185 > > Way id: way 457207851 > > Observation: When looked into the OSM data it is found that there is a > spike at (49.9735921, 16.776278). Our editor removed the way 457207850 and > aligned the way 457207851 as per ground reality. > > *Before Data* > > *Data post GL Edits* > > *[image: pic1]* > > *[image: pic2]* > > > > Example 2: > > Task Link: https://maproulette.org/challenge/44790/task/225696167 > > Way id: way 553716939 > > Observation: When looked into the OSM data it is found that there is a > spike at (49.8575, 18.2892678). Our editor modified and aligned the > building polygon way 553716939 as per ground reality. > > *Before Data* > > *Data post GL Edits* > > *[image: pic3]* > > > > Example 3: > > Task Link: https://maproulette.org/challenge/44790/task/225696242 > > Way id: way 51800424 > > Observation: When looked into the OSM data it is found that there is a > spike at (49.2225828, 16.5561804). Our editor modified and aligned the > building polygon way 51800424 as per ground reality. > > *Before Fixes* > > *After Fixes* > > *Czech CUZK:KM* > > > > Thank you > > Michal > > > _______________________________________________ > talk-cz mailing list > talk-cz na openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-cz > https://openstreetmap.cz/talkcz >
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23.9.2024 09:28:06 (#3)
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Michal Wlodarczyk

<Michal.Wlodarczyk at tomtom.com>
12
Hi Jan, Thank you for the answer and the tips provided. We will also use a guide from your reference. Have a great day. Michal ------------- další část --------------- HTML příloha byla odstraněna... URL: <http://lists.openstreetmap.org/pipermail/talk-cz/attachments/20240923/47e16bb2/attachment-0001.htm>

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