Hello, Can you please share the data mining techniques can be employed on OSM data.
regards On Mon, Aug 18, 2014 at 5:30 PM, <[email protected]> wrote: > Send dev mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.openstreetmap.org/listinfo/dev > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of dev digest..." > > > Today's Topics: > > 1. How to handle these issues? (Sandor Seres) > 2. Re: How to handle these issues? (Mateusz Konieczny) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 17 Aug 2014 15:04:19 +0200 > From: "Sandor Seres" <[email protected]> > To: <[email protected]> > Subject: [OSM-dev] How to handle these issues? > Message-ID: <[email protected]> > Content-Type: text/plain; charset="us-ascii" > > I am not quite shore how to handle the following two dilemmas: > > 1.If a rendering system renders the planet-sea area objects (instead of > planet-land area objects), is then Antarctica a hole in the global ocean > object or the global ocean object simply ends by the upper border-line of > Antarctica? > > 2.There are around 25460 objects in the class defined by the tag > natural=land in the latest dump. The wiki documentation for the same tag > says "This tag should not be used". How to interpret this? > > Are editors refusing data with this tag? Should we ignore the data with > this > tag in the dumps? Looking at different OSM based maps I see that I am not > the only one confused with the issue. Unfortunately, the class contains > area > objects related to all water types/classes so, this is not just > > rendering them at certain stage. In vector mapping, as you certainly know, > it is much more complicated. > > Thanks for suggestions/meanings. > > Sandor > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.openstreetmap.org/pipermail/dev/attachments/20140817/d385fb56/attachment-0001.html > > > > ------------------------------ > > Message: 2 > Date: Sun, 17 Aug 2014 18:51:43 +0200 > From: Mateusz Konieczny <[email protected]> > Cc: [email protected] > Subject: Re: [OSM-dev] How to handle these issues? > Message-ID: > < > caldvra60pa6-l8ypafsxx8b03mrepz905dgtq+w80_ylgdb...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > ad 2) > - natural=land tag was used > - multipolygons were used to achieve the same goal > - multipolygons are better (solution of general problem), so natural=land > was described as bad idea > - existing natural=land gets replaced by multipolygons what is ongoing > process (see > http://taginfo.openstreetmap.org/tags/natural=land#map for progress - for > example in central Europe this tag is gone or was never used) > - JOSM since https://josm.openstreetmap.de/changeset/7391/josm encourages > users to update tagging (4 days ago) > > Tag may be either used to use full available data or be ignored to make > data processing easier and encourage update of tagging. > > > 2014-08-17 15:04 GMT+02:00 Sandor Seres <[email protected]>: > > > I am not quite shore how to handle the following two dilemmas: > > > > 1.If a rendering system renders the planet-sea area objects (instead of > > planet-land area objects), is then Antarctica a hole in the global ocean > > object or the global ocean object simply ends by the upper border-line of > > Antarctica? > > > > 2.There are around 25460 objects in the class defined by the tag > > natural=land in the latest dump. The wiki documentation for the same tag > > says ?This tag should not be used?. How to interpret this? > > > > Are editors refusing data with this tag? Should we ignore the data with > > this tag in the dumps? Looking at different OSM based maps I see that I > am > > not the only one confused with the issue. Unfortunately, the class > contains > > area objects related to all water types/classes so, this is not just > > > > rendering them at certain stage. In vector mapping, as you certainly > know, > > it is much more complicated. > > > > Thanks for suggestions/meanings. > > > > Sandor > > > > _______________________________________________ > > dev mailing list > > [email protected] > > https://lists.openstreetmap.org/listinfo/dev > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.openstreetmap.org/pipermail/dev/attachments/20140817/79ea171d/attachment-0001.html > > > > ------------------------------ > > _______________________________________________ > dev mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/dev > > > End of dev Digest, Vol 113, Issue 7 > *********************************** > -- Er. Sukhjit Singh Sehra Assistant Professor Dept of Computer Science Engg. Guru Nanak Dev Engineering College, Ludhiana, Punjab Mobile No:- 09855959200 *In your free time kindly visit Sikh-relics.com - A Gallery of Blessed Relics of Sikh Guru Sahib
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