Hello. On Mon, 2009-01-12 at 16:03, Mat Real wrote: > > I am responsible for the openBmap website: http://www.openbmap.org > > At this time, only cellular networks are concerned. > All the software code is AGPL v3 and data are Creative Commons License > (creative commons Attribution-Share Alike 3.0 Unported)
CC for the data is good. A problem is the attribution part. I think it is vital to give credit to contributors. The problem with this part of CC and big data collection is that you have to mention _every_ contributor, that can give you a real nightmare when suing the data. OSM is running into the same problem these days. Just to make you aware of a potential problem. Something like including a link to a list of contributors does sadly not work. > This site is quite similar to the opencellid.org website > (and I am currently merging the opencellid data into the openbmap database) So you get the confirmation that the opencellid data is also under cc-at-sa? We did not found a concrete statement about it and Daniel already sent them a mail to clarify it. Do you merge not only the data but also the projects? Having them co-exists with the same goal is kinda pointless. > For each cell zone, I generate a kml file. This is nice to see how cells > enveloppe and > how coordinates have been generated. > > http://realtimeblog.free.fr/cell_map.php?mcc=208&mnc=1&lac=1024&cellid=55608&display=Display The maps looks already quite nice, even if germany is not in the db yet. ;) > 2) the openBmap database contains much more information than opencellid > one.(for raw data > and for processed zone data) > > We are keeping track of all attributes available such as: > > *** gsm signal strength > *** quality of gps received > ... > > These attributes are not available in opencellid database. From these > "extra" datas, > we can for example decide to use only gps data of correct quality (with low > vdop, hdop, hdop) I like to have more data available. Can you give us some insight how big such collections can grow. For example your current db size and the current number of entries? I would like to have the option to have such a db on my SD card for offline use and syncing when on wifi or similar. > On our side, we plan to introduce an offline mcc/mnc/lac/cid->gps database. > but at this time, only one api is available at > http://realtimeblog.free.fr/api/getGPSfromGSM.html > > What is interesting with this api is that if the cell is not in the > database, it returns > the lac position and the max radius of the lac > > For your information I have implemented a reverse geocoding in the Mapping > Manager > in order to get the name of the city where the cell coordinates points at. Sounds cool. > About openBmap client side, as you can see on the web site, a windows mobile > version > is available. It logs mcc/mnc/lac/cid/signal strength and gps data. > > The openmoko version is almost ready ! Cool! How does it get the gsm and gps data? I hope from the FSO framework! We still have some more ideas around location on our agenda. And location from GSM/Wifi/etc is a nice part of it. Would be great to have some more devs here. If anybody is interested let us know. Hopefully in february we should be again in a modus where we like to test out new things to refresh us from a new release. > The gsm/gps capture is ready and I guess it will be soon out. > The developer in charge will post soon on this thread. Great. regards Stefan Schmidt _______________________________________________ devel mailing list devel@lists.openmoko.org https://lists.openmoko.org/mailman/listinfo/devel
