On Mon, Nov 30, 2009 at 4:10 AM, Ævar Arnfjörð Bjarmason <[email protected]>wrote:
> On Mon, Nov 30, 2009 at 02:35, Jonathan-David SCHRODER > <[email protected]> wrote: > > Hello, > > I am working on a student project (team of 6 people) whose goal is to > build > > a solution allowing mobile devices to display indoor data along with wifi > > geopositioning. (I am willing citing this because contrary to > > http://www.micello.com or http://www.aws.cit.ie/mapume/ who we just > found > > about, we want to have something fully open source/free software). > > As part of this project, we have decided to use the openstreetmap server > > software technology. > > > > Someone at University of Calford (UK) did the same as us and managed to > draw > > into a self-hosted openstreetmap server, the inside of some campus's > > bookstore. > > See here : > > > http://www.ja.net/development/network-access/location-awareness/investigations-la.html > > <= B2. Interactive Maps = > > > http://www.ja.net/documents/development/network-access/location-awareness/investigations/B2-interactive-maps-2.pdf > > > > "@page 14 (or 270 in page footers) > > "What worked well was the fact that whilst OpenStreetMap is intended for > > outdoor maps it > > can be made to work equally well for indoor maps. The interactive server > can > > be configured to > > provide further zoom levels to display the resolution required for indoor > > maps. The provision of > > interactive elements can then be achieved by editing the PostGIS database > to > > include additional > > objects, which can then be rendered by the mapnik renderer. Each > additional > > interactive object > > will require its own unique style to be predefined to ensure that they > > appear correctly on the > > portable device." > > > > I have put Nigel Linge who I believe is the author of this PDF and > paragraph > > as a recipient of this e-mail too. > > > > Could someone tell precisely what config changes need to be done for > indoor > > precision & objects, starting from a regular openstreetmap server setup > such > > as that described on > > http://weait.com/content/build-your-own-openstreetmap-server ? > > > > I basically would like to be able to draw every possible object contained > in > > a building/home/construction. > > I have started creating a tags draft for indoor which is very limited at > : > > > http://wiki.openstreetmap.org/wiki/Proposed_features#Proposed_Features_-_Indoor > > > > By the way, who would like to collaborate with my team on our indoor > self- > > and objects geopositionning project relying on openstreetmap and > java-based > > mobile applications ? > > That's a very interesting project, but I don't see why you need to set > up your own OpenStreetMap-like infrastructure for it. Why not just > save this data to the main OpenStreetMap API which will take care of > storing it for you and then retrieve daily dumps for your area and > render the map from those? Then you don't have worry about hosting > your own API, others can easily access your data from OSM and you only > have to worry about rendering. > Hello, I do accept to have some buildings' outer bounds to be stored on the database which is _public_, but I and people who'll use our project will - we guess - mostly not want to have their building's levels contents (chair,table,fridge,room 322,trashcan...) stored inside that database, but rather another private database. I already use JOSM to send the buildings outer bounds on the public server and this process/the tool is ok enough, I don't need to speak about APIs for public stuff for now. Though for private stuff = the buildings contents, I'll very likely use the APIs and private to me means : - private dedicated server deployed by my team or - private openstreetmap space on some service provider's cloud > > To render you need small PostGIS database (for mapnik) you refresh > daily along with a custom stylesheet to actually render the data > you're putting in, along with small configuration changes to > mapnik/OpenLayers to render more zoom levels than normally. That can > all be done on something as unpowerful as someones laptop which runs > generate_tiles.py overnight and then uploads tiles / HTML to some web > hosting space. ok thank you, more than generate_tile.py, likely the server side API scripts should be checked so that they don't round/skip a request if its lat&long are too precise. so if I understand well, in this case in the global setup I'd have : openstreetmap.org for storing building's outdoor bounds and also sending frequent updates of my buildings' surrounding areas' data myownstreetmapserver.org for storing the latter surrounding areas' data + merging that with my building's indoor data & rendering the whole into outdoor & fine-grained indoor tiles with custom icons (stylesheet) ? > > The only thing I see potentially getting in your way is that the OSM > database doesn't store enough significant digits of lat/lon > coordinates to make indoor mapping viable, but perhaps it does. I > couldn't find documentation on how many digits it stores and how that > translates approximately into real-world meters/centimeters. Perhaps > someone else can chime in with that information? > Ok... well, at least for now, I can tell that I can draw things <1m in JOSM and see those items represented on openstreetmap.org in the same precision in the Edit tab (potlactch?) ; in the View tab, I can't tell because I can't zoom more. For our mobile use, for now, we don't plan to use openlayers (browser-hosted) for speed considerations, but some java-based apps/libraries. While it seems obvious that we'll stay with openlayers (viewing) and JOSM/* (editing) for desktop computers. Thank you very much for having replied. Jonathan
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