Hi, the first order is to get permission to use the data, of course. To me the data about which providers make use of a particular antenna (tower) is more interesting than the coordinates. We have to make them fit into our context anyway, so it's likely we'll be putting them at slightly different coordinates. What I would do with them is to create an .osm file with the original coordinates and load this into JOSM. Then download information about an area into a new layer. Then copy/paste them one by one, while at the same time moving them where it makes sense for us to put them (in relation to the other objects on our map).
Cheers, Polyglot 2011/4/24 Gerard Vanderveken <g...@ghia.eu> > There are two things wrong: > - The antenna at the site of BIPT is placed not on the roof of the building > but above the white tent / parasol of the terrace (See their Google map with > satelite view). > (Are the antennas in front of the building against the wall?) > - The street before the cafe in OSM is running through this terrace (see > Bing sattelite view). > (The way is not actualy a street but the border of the market place) > the actual street should be located more south-west. > http://www.openstreetmap.org/browse/way/91685551 > Why do you convert the location in degrees, minutes and seconds as the BIPT > site has already 2 formats? > Coordonnées: 3.95292 E / 50.45506 N > Lambert: X: 120473 / Y: 127218 m > http://www.openstreetmap.org/?mlat=50.45506&mlon=3.95292&zoom=18 > Seems the same location as on BIPT. > Regards, > Gerard. > > > Linusable wrote: > > I have tried a few times this converter website : > the world coordinate converter <http://twcc.free.fr/> > From my point of view, it's OK, at least for the geodetic points i tested. > It could be interesting to discuss and chek some original data for a few > antenna, like the one i mentionned on the cafe 'Le Central', grand place of > Mons, > > I have seen on the website of IBPT: http://www.sites.ibpt.be/ that the > position 3° 57' 10.5" E / 50° 27' 18.2" N for the above mentionned point was > also a few meters on the grand place, with the google images > > Regards, > Linusable > > Le 23/04/11 15:47, Ben Abelshausen a écrit : > > It is possible the coordinate conversion was not very accurate but the > source data was. I had some problems before converting Lambert coordinates > and got about the same deviations. > > Regards, > > Ben > > On Fri, Apr 22, 2011 at 9:59 PM, Linus Able <linusableli...@yahoo.fr>wrote: > >> Hello everybody, Hello Pol, >> >> i should want to question the accuracy of the data. I have seen (before >> Pol deleted the data) one of the antenna points on the (openstreetmap) >> Grand-Place de Mons, in JOSM, with Bing aerial as background. The point is >> café Le Central, at the corner of Grand Place with rue de Nimy. I suppose >> the Antenna is on the roof, but it appeared a few meters on the Grand Place, >> with a difference of about 5-10m compare to the Bing images. >> >> What is wrong (or imprecise) : antenna coordinates or Bing position ? >> >> In order to investigate Bing positionning around Mons, I checked against >> a geodetic point from ign/ngi (www.ngi.be), using Fiche >> Planimétrique45D06C1, with a survey point at position N 50.47149281234526 >> E 4.028218331187543 (Obourg). It seems that the error is less than 1-2 >> meters. >> >> My naive first conclusion is that the accuracy of the antenna positions >> could be quite poor, specially in dense area (towns or cities). This could >> result to absurd situations like antenna on streets. >> >> Maybe it could be interesting to use a script to analyse distance of >> antenna (from the data files) with nearest streets ? or another standard >> procedure ? >> >> Regards, >> >> Linusable >> >> Le 22/04/11 16:33, Pol a écrit : >> >> I deleted them this morning and as long as the situation is not clear. >> >> -*φol d.*- >> >> >> >> On Fri, Apr 22, 2011 at 10:22, Gerard Vanderveken <g...@ghia.eu> wrote: >> >>> I was looking up some on the map, but it seems that tower:type = >>> communications is not rendered anymore??? >>> I tought they were before, altough only in Osmarender, cfr VRT radio and >>> tv towers in Overijse - Wavre. >>> >>> I see some have a name, but I'm affraid that it won't add much, but >>> instead duplicating and cluthering the rendering and names of the current >>> places (buildings like churches etc) >>> http://www.openstreetmap.org/browse/changeset/7911333 >>> Some has also very generic names eg. watertoren, kerk, etc >>> >>> There is a Wiki about GSM in the Belgian project >>> >>> http://wiki.openstreetmap.org/wiki/WikiProject_Belgium/Mapping_resources#GSM.2FUMTS_antenna_sites >>> >>> Should the points not to be deleted, until the status about their use >>> becomes clear?? >>> For the moment it is obvious that it is forbidden data. >>> >>> Regards, >>> Gerard. >>> >>> Pol wrote: >>> >>> Hello, >>> >>> I contacted them this morning and they asked me to write down a mail >>> explaining the request, why, etc etc etc. >>> That's what I did. If you want a copy of the mail (in french), just >>> contact me in private. >>> >>> They told me that they will forward the mail to their law departement >>> and I should expect an answer next week. >>> >>> Let's cross our fingers ! ;) I'll keep you updated of the situation ! >>> >>> By the way, I'll be at the hackdemocracy this Thursday, April 28, >>> 2011: http://www.meetup.com/HackDemocracy/events/17010026/ >>> >>> Have a nice day all. >>> >>> -*φol d.*- >>> >>> >>> On Thu, Apr 21, 2011 at 22:14, Pol <d.paol...@gmail.com> wrote: >>> >>>> Hello, >>>> >>>> Someone forwarded me the mail from Lennard talking about the revert or >>>> not of my commit. >>>> I wasn't aware of the existence of that mailing list until now. >>>> >>>> Let me explain to all of you how it all began... >>>> >>>> One year ago I was looking, for personal purpose, the coordinates of >>>> each cell phones antennas in Belgium. >>>> >>>> The first site I found was: http://www.antennes-gsm.be/ >>>> But that one seems to be old and no more maintained. >>>> >>>> Then I found the one of IBPT: http://www.sites.ibpt.be/ >>>> >>>> The one you are currently seeing at this address is the new version. >>>> When I first found it, they were using an old version. >>>> >>>> By doing some searches, I found a huge security hole in it. >>>> I was unemployed at that time and I decided to make an exploit. >>>> The exploit was simple, using HTML and JavaScript, I could manipulate >>>> their databases by sending custom queries. >>>> I'm not a kid and I'm someone who destroy someone else's work, so I >>>> contacted them and explained the problem. >>>> The reaction was fast, some days later I was in their offices with my >>>> laptop, showing them the problem and the possible solutions. >>>> I also made a new local proof of concept that it could be done in a >>>> nicer and cleaner way. >>>> Unfortunately, they were really kind and say thanks but we do not rely >>>> on our team to do the map, we rely on another company and we cannot break >>>> the current contract with them. >>>> Before leaving, I asked to the head of security if it was possible to >>>> get a dump of the antennas coordinates in a more easy way to put it on >>>> OpenStreetMap and he said that it couldn't be done: "Imaginez ce que >>>> pourrait faire qqun de mal intentionné s'il trouve ces données!" which >>>> means: "Imagine what could do someone malicious if they finds these >>>> datas!". >>>> Which is completely a non sense because those datas can be retrieved >>>> from THEIR online website. >>>> I said him that ! Someone could spot by himself all the antennas and put >>>> them on OpenStreetMap. He didn't reply to that one. >>>> So, I leaved, quite sad. >>>> >>>> Some month later, the current new system was in place and the security >>>> hole vanished, problem solved. >>>> >>>> With the new system, it's even easier to get their datas. >>>> I decided to save in a file all the data I could get from their map in a >>>> file and submit it to OpenStreetMap. >>>> >>>> That's the end of the story. >>>> >>>> It's up to you now to decide if you want to remove them or not. >>>> If you have questions, I'll reply to them on that mailing list. >>>> >>>> Nice evening all. >>>> >>>> -*φol d.*- >>>> >>> >>> ------------------------------ >>> >>> _______________________________________________ >>> Talk-be mailing listtalk...@openstreetmap.org >>> http://lists.openstreetmap.org/listinfo/talk-be >>> >>> >>> _______________________________________________ >>> Talk-be mailing list >>> Talk-be@openstreetmap.org >>> http://lists.openstreetmap.org/listinfo/talk-be >>> >>> >> >> _______________________________________________ >> Talk-be mailing >> listTalk-be@openstreetmap.orghttp://lists.openstreetmap.org/listinfo/talk-be >> >> >> _______________________________________________ >> Talk-be mailing list >> Talk-be@openstreetmap.org >> http://lists.openstreetmap.org/listinfo/talk-be >> >> > > _______________________________________________ > Talk-be mailing > listTalk-be@openstreetmap.orghttp://lists.openstreetmap.org/listinfo/talk-be > > > ------------------------------ > > _______________________________________________ > Talk-be mailing > listTalk-be@openstreetmap.orghttp://lists.openstreetmap.org/listinfo/talk-be > > > _______________________________________________ > Talk-be mailing list > Talk-be@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-be > >
_______________________________________________ Talk-be mailing list Talk-be@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-be
