Re: [OSM-dev] Disallowing certain characters in tag keys
+1. much sanity ensues. On Sat, Oct 16, 2010 at 7:44 PM, Jochen Topf joc...@remote.org wrote: So I'd like us to think about whether we can disallow a few characters from appearing in tag keys. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] aviation maps?
If you have a source of data that can be used, then entering that into openstreetmap is usually trivial. Getting the data tends to be the problem. For example I have a converter for [some elements of] ARINC424 data, although it's not legally possible to upload the results. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] aviation maps?
On Wed, Aug 11, 2010 at 5:57 PM, Ákos Maróy a...@maroy.hu wrote: in Europe at least, airspace information is freely available Like this? http://www.nats-uk.ead-it.com/public/index.php%3Foption=com_contenttask=blogcategoryid=167Itemid=220.html ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] OSM - POI files?
Can anyone with working software/instructions help out on this thread: http://forum.ctc.org.uk/viewtopic.php?f=5t=36113 ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
[OSM-dev] OSM - POI files?
Is there some application that extracts a list of POIs from an OSM file, e.g. as GPX or whatever? It would need to collapse each polygon down into one central point, so that the output is just a list of points. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Pyroutelib vs Pyroutelib2?
I should probably know more about the history of this program than I do, but here goes... I think pyroutelib was part of some huge GUI application for mobile phones, whereas pyroutelib2 just pulled-out the routing code into a smaller set of files that was easier to import into another project. It looks like pyroutelib2 requires you to specify the transport type when you first load the OSM data (LoadOsm::__init__ takes transport as a parameter). So findNode will probably return a node that you can travel from, because it only stored such nodes whilst loading the data. On Mon, Feb 15, 2010 at 10:23 PM, Tareq Ismail hellothereta...@gmail.com wrote: Hello, I was wondering what the main differences between Pyroutelib (http://wiki.openstreetmap.org/wiki/PyrouteLib, http://svn.openstreetmap.org/applications/routing/pyroute/) and Pyroutelib2 ( http://wiki.openstreetmap.org/wiki/Talk:PyrouteLib, http://svn.openstreetmap.org/applications/routing/pyroutelib2/) were and why the two exist. One would assume that Pyroutelib2 is more recent but I think it may not be. I noticed that the findNode method in loadOSM.py doesn't accept a travel type (car, cycle, etc) and that leads me to believe it may return a node that is not travel-able by a specific vehicle? Thanks, Tareq Ismail ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Finding closet node for PyrouteLib?
The data object in that routing module should have a findNode() function that gives the nearest routable node for your chosen transport type. This function is located in loadOsm.py (don't just choose the nearest OSM node since that might be a county boundary or something - the findNode function returns the nearest node which is on a path that you can travel) On Wed, Feb 10, 2010 at 9:30 PM, Tareq Ismail hellothereta...@gmail.com wrote: Hello all! I'm new to OSM and am glad to be a part of the community! I posted the following question on the newbies thread and was told to post it here instead. I have an application that has many addresses that I have geocoded. I am trying to use Pyroutelib (see here: http://wiki.openstreetmap.org/wiki/PyrouteLib) to find routing distances from one address to another. It seems that the library does not accept lat/lon (from the addresses I geocoded) as an input and only does node to node routing. I thought I should then try to find the closet node to my lat/lon position for my address, then send that node in to Pyroutelib for routing. Any suggestions as to how to do this? Is there something simple that I haven't thought of? Thanks all! Tareq ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Coordinate to Pixel at lowzoom
Do the conversion at 8 zoom levels higher than your tile (i.e. the tile which that pixel represents) i.e. if someone clicks the top-left pixel of 1,1...@z1 then do tile2ll of 256,2...@z8. If they click the 3rd pixel across from that then do tile2ll of 256+3,2...@z8. (replace 8 by log2 of your tile width, if you're not using 256x256) On Thu, Oct 8, 2009 at 2:36 AM, Lynn W. Deffenbaugh (Mr) ldeff...@homeside.to wrote: I understand the discussion on the following URL about the tile names and the long2tilex, lat2tiley, tilex2long, and tiley2lat functions. http://wiki.openstreetmap.org/index.php/Slippy_map_tilenames However, at zoom levels less than 4 (or so), I get a worsening offset to the north and south of the equator as I map objects onto the maps. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Coordinate to Pixel at lowzoom
err, that should probably be z9 in my example. Something like: lookup_x = tile_x * tile_width + pixel_x lookup_y = tile_y * tile_width + pixel_y lookup_z = tile_z + log2(tile_width) ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
[OSM-dev] Corrupted/missing text in OSM node pages?
OSM node history page seems to be letting some HTML through from node tags, while deleting anything between angle-brackets. Compare http://www.openstreetmap.org/api/0.6/node/458755979 with http://www.openstreetmap.org/browse/node/458755979 ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
[OSM-dev] remove redirect from old ti...@home server?
Currently http://dev.openstreetmap.org/~ojw/ is redirecting to tah.openstreetmap.org. Would it greatly inconvenience anyone if I stopped that from happening and put an actual website on dev.openstreetmap.org/~ojw/ ? ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Fw: [Geowanking] [Fwd: [Ann] LinkedGeoData.org]
like the WOEID system that Yahoo! were pushing for us to use? ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Slippy Map Elevation Overlay
It's computationally a bit more expensive on the server, but you can have a tile server that makes the white areas of regular maps transparent and overlays them on top of relief maps (i.e. opposite order to what you tried). It's trivial PHP/GD code, and uses less CPU on the client-side than having semitransparent overlays (which can be *very* slow), but only works when the road map doesn't contain antialiased edges. update: I found an example implementation, but it seems to be overlaying something with antialiased roads :( http://dev.openstreetmap.org/~ojw/relief/ On Tue, Apr 28, 2009 at 10:30 PM, Graham Jones (Physics) grahamjo...@physics.org wrote: I have had a quick go at http://maps.webhop.net/srtm.html. It sort of works - the high ground stands out, and you can see the shape of the ground, and you can switch the overlay off and on. It does not work that well as an overlay though because it is not really transparent enough. I find that sometimes the transparency works quite well and you can see the map underneath, and others it is practically opaque. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] GSoC Ideas
PHP code is available to stitch-together map images from existing tileservers into an PNG/JPEG image (for use by things like mediawiki plugins): http://dev.openstreetmap.org/~ojw/GetMap/ maybe could add some drawing code to that, e.g. to plot locations, add icons? ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] OSM data on on-board-terminals
we did a bit of work with python/cairo that sounds similar to your idea:
http://wiki.openstreetmap.org/wiki/Pyrender
the way that works is: you have lots of OSM files each containing
enough data to draw one tile. Many formats have been tried- osm.gz
files are probably easiest to understand.
then have a program which renders those to PNG. Pyrender does this
using cairo, but any graphics library will do.
You can use it as a library ('give me PNG data for tile x'), or python
can even run its own http server if you want to run your program as a
javascript page or something in an embedded web browser.
As you say, the benefit of storing data instead of tiles is that you
can update rendering rules on-the-fly, while still having the PNG
tiles output for caching etc.
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Re: [OSM-dev] Fwd: Static Maps URL
It doesn't have markers, but this URL will stitch images together: http://dev.openstreetmap.org/~ojw/GetMap/ ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Complete tileset - experiments with tile sizes and disk space
On Mon, Dec 22, 2008 at 1:43 PM, Bill Magee b...@billmagee.co.uk wrote: I don't do *nix but on WinXP the typical allocation size for large disks is 4kb (and I assume other file systems will do similar). Any tile under 4kb (lots of them) will occupy this 4kb regardless. Back when ti...@home stored its images in one file each, I think the sysadmins chose a block size of 512 bytes for exactly that reason. That would have been on Linux with ReiserFS though, so probably doesn't help for your app. The replacement scheme was http://wiki.openstreetmap.org/wiki/Tiles%40home/Tileset_as_one_file which puts 1366 tiles in each file (along with compression for various types of blank tiles) - apparently it doesn't take long to extract the PNG data for any given tile from such files. Depending on what you're rendering, you may find that most tiles are blank (more so for specialist layers like bus routes, less so for layers with autogenerated content on like contours) so it's worth considering those when calculating the expected disk usage. (plain-colour 'blank' tiles might be sea or forest etc., as well as just empty land, depending on your rendering) ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] surveillance cams not shown in any render
In the current stylesheet I think I can see: rule e=node k=amenity v=speed_trap On Fri, Dec 12, 2008 at 1:37 PM, 80n 80n...@gmail.com wrote: Speed cameras did used to be rendered in Osmarender. Not sure whether it has been removed deliberately (some people are opposed to helping motorists break the law) or accidentally (never attribute to malice...). ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] The wiki defines the database (was: relations)
On Wed, Nov 5, 2008 at 1:35 AM, Erik Johansson [EMAIL PROTECTED] wrote: On Wed, Nov 5, 2008 at 12:26 AM, Matt Amos [EMAIL PROTECTED] wrote: there have been occasions when real mappers have documented their tags on the wiki, only to have the wiki pages overwritten by someone else's better ideas. maybe this puts some people off? Yes that is very cumbersome but how often does this happen Several hundred times recently? http://wiki.openstreetmap.org/index.php?title=Special:Contributionslimit=500target=Circeus ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] What country is something in?
Perhaps someone who knows GIS software could take a simple coastline dataset like GSHHS (doesn't need to be as detailed as PGS or OSM, and GSHHS doesn't split-up polygons) then expand all the coasts by 20 miles and provide an OSM file that we can import sections of as part of a country's border? On Fri, Oct 31, 2008 at 5:53 PM, Roland Olbricht [EMAIL PROTECTED] wrote: That's why it was so surprising to see the imported USA and California borders in OSM running along the beach - surely we want to move them out to sea? It's just additional data. So a user with sound knowledge of the U.S. border regulation might simply correct or delete the robot generated sea border. Still, the coastline contains way more nodes than any other kind of borderline. So using only the beach as border would fill up a program working with boundary data with about 70 times more data than the solution with a generated sea boundary. Currently the borders are marked with the 2 countries - do we need to allow region:left=international if it's a border with the ocean instead of another country? From my point of view, these tags in the individual ways aren't anyway a good idea, as they are more difficult to maintain consistent and complete than a relation would be. Beside that, I have no idea whether it is useful to have a relation collecting all the ways that are boundary of the open sea. Cheers, Roland ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Best way to validate user input
How about this for a link showing some of the features displayed on typical charts? http://www.avn.faa.gov/index.asp?xml=naco/online/aero_guide Does X-plane/flightgear have any radionavigation data they could add to the chart? OSM itself only has airports+runways at the moment. On Sat, Nov 1, 2008 at 12:52 PM, Iván Sánchez Ortega [EMAIL PROTECTED] wrote: El Sábado, 1 de Noviembre de 2008, spaetz escribió: - Somehow add visual feedback to the final map renders to validate user data. Since our data is appropriate to aeronautical maps this wouldn't necessarily fit well with existing infrastructure. an aeronautical layer via the [EMAIL PROTECTED] infrastructure? Sounds cool. Now, somebody please explain how an Aeronautical chart works: http://en.wikipedia.org/wiki/Aeronautical_chart http://www.skyvector.com (slippy propietary aero chart) Providing such charts via [EMAIL PROTECTED] seems like a great idea - how difficult would it to create the stylesheets for osmarender? -- -- Iván Sánchez Ortega [EMAIL PROTECTED] Proudly running Debian Linux with 2.6.26-1-amd64 kernel, KDE 3.5.9, and PHP 5.2.6-5 generating this signature. Uptime: 13:47:42 up 72 days, 2:43, 2 users, load average: 0.69, 0.99, 0.64 ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] What country is something in?
That's why it was so surprising to see the imported USA and California borders in OSM running along the beach - surely we want to move them out to sea? Currently the borders are marked with the 2 countries - do we need to allow region:left=international if it's a border with the ocean instead of another country? On Wed, Oct 29, 2008 at 10:32 PM, Roland Olbricht [EMAIL PROTECTED] wrote: * the coastline doesn't constitute the real border of the country Most countries just don't have their border on the coastline but claim a zone of about 22.2 km (12 nautical miles). See e.g. http://en.wikipedia.org/wiki/Territorial_waters For example, this prevents that a ferry between the mainland and a nearby island already gets an international ferry. So it might be desireable to have as border rather a smoothend 12-nm-zone than the coastline. ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
Re: [OSM-dev] Good explanation of latitude-to-pixel conversion?
This set of functions might be more readable
http://svn.openstreetmap.org/applications/routing/pyroute/tilenames.py
and covers stuff like finding the edges of tiles, as well as just the
mercator stuff
On Sat, May 17, 2008 at 4:11 PM, David MENTRE [EMAIL PROTECTED] wrote:
Hello,
On Sat, May 17, 2008 at 2:29 PM, Nick Whitelegg
[EMAIL PROTECTED] wrote:
I have the code to do this, but I guess I'm one of these people that like
to understand what's actually going on :-)
You are not the only one. I followed the same path (pun intended) a few
weeks ago.
The specific formula I mean (represented in Java) is:
public static int latToY(double lat,int zoom)
{
double f = Math.sin((Math.PI/180)*lat);
int y = (int)Math.round
(Math.pow(2,zoom+7) + 0.5*Math.log((1+f)/(1-f)) *
(-Math.pow(2,zoom+8)/(2*Math.PI)));
return y;
}
The code you give is to translate a (lat, zoom) to x coordinate, you
have a more direct formula applying the Mercator projection to the lat
value:
http://wiki.openstreetmap.org/index.php/Mercator
In the above page, it helps to know that r_minor and r_major are Earth
Equatorial and Polar radii[1].
The original post helps to understand why taking into account the
variation of radius was necessary:
http://osdir.com/ml/gis.openstreetmap.devel/2006-12/msg00016.html
OJ W [EMAIL PROTECTED] writes:
e.g. wikipedia will tell you all about how mercator itself works:
http://en.wikipedia.org/wiki/Mercator_projection
This is a very useful page.
and for the tiles, alll you do is say select the bit of
mercator-projected map between two arbitrary latitudes (which happen
to be numerically special but you don't need to care about that) and
call that range the limits of your map in Y.
you then just start dividing Y into halves and quarters etc. to do the tiles.
In fact, I found explanation in
http://wiki.openstreetmap.org/index.php/Slippy_map_tilenames sufficient
after thinking a little about it.
I hope it helps,
Yours,
d.
Footnotes:
[1] http://en.wikipedia.org/wiki/Earth
--
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5996 CC46 4612 9CA4 3562 D7AC 6C67 9E96 A3AD 7A2A
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[OSM-dev] Openlayers cyclemap permalinks
The cycle map seems to have the openlayers permalink bug [1] - is it possible to apply the latest openlayers corrections so that it uses lat/long in permalinks? Can someone from OL also reply to this, saying how to do the correction? [1] http://www.gravitystorm.co.uk/osm/?zoom=13lat=6781599.86453lon=-126905.18782layers=B00 6781599 degrees north is not the usual way of representing positions ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
[OSM-dev] Filtered export using OSMXAPI?
Just occurred to me (sorry if this is obvious) that the export tab could let you type in a couple of tag/value pairs and generate a link to OSMXAPI of the area with the filter you've specified. So you could export (e.g.) all train lines within the visible area, without too much new code... ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
Re: [OSM-dev] download a bbox from tiles
On Tue, Apr 8, 2008 at 4:19 PM, Sven Grüner [EMAIL PROTECTED] wrote: Edoardo Marascalchi schrieb: how can i download just a section of the map giving a bbox? in the party video render script the url is defined as: http://dev.openstreetmap.org/~ojw/bbox/?W=12.381605S=43.108255E=12.393933N=43.117255width=600height=600http://dev.openstreetmap.org/%7Eojw/bbox/?W=12.381605S=43.108255E=12.393933N=43.117255width=600height=600 but is'nt working.. Looking fo this? http://tah.openstreetmap.org/MapOf/ regards, Sven ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev no, this is something that specifies exact positions for the edges of the map... ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
Re: [OSM-dev] download a bbox from tiles
Try zooming out. It can't find a zoom level detailed enough to give the resolution it wants e.g. this works: http://dev.openstreetmap.org/~ojw/bbox/?W=12.381605S=43.108255E=12.403933N=43.127255width=600height=600 Based on the extent of map requested, and size of image, it tries to pick a reasonable zoom level. Looks like it didn't find one for your sample URL. On Tue, Apr 8, 2008 at 4:04 PM, Edoardo Marascalchi [EMAIL PROTECTED] wrote: how can i download just a section of the map giving a bbox? in the party video render script the url is defined as: http://dev.openstreetmap.org/~ojw/bbox/?W=12.381605S=43.108255E=12.393933N=43.117255width=600height=600http://dev.openstreetmap.org/%7Eojw/bbox/?W=12.381605S=43.108255E=12.393933N=43.117255width=600height=600 but is'nt working.. how have i to change? i can't find any information in the wiki.. Edoardo -- Edoardo Marascalchi ICT Consultant website: http://www.edoardomarascalchi.it skype: My status skype:asca_edom?call ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
Re: [OSM-dev] slippymap doesnt wrap around +-180deg
Follow the F-22's ;) http://it.slashdot.org/article.pl?sid=07/02/25/2038217 ___ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/dev
