Re: [OSM-dev] Scale of downloaded images seems to vary.

2018-01-11 Thread Bjoern Hassler
uski wrote: >>> >>>> Hi, >>>> >>>> As long as there is nobody on the list can make sense of the values for >>>> almost two weeks, I'd say it should be considered a bug and filed towards >>>> https://github.com/openstreetmap/openstr

Re: [OSM-dev] Scale of downloaded images seems to vary.

2018-01-11 Thread Bjoern Hassler
Hi Tom, dear friends, I'm not really sure what you mean by geographical scale? It would be helpful to have text like this: "This image is 90.7 dpi, or 28 dots per cm. If printed at this dpi, the scale will be 1cm to 25,000 cm." Particularly if the formula is complicated, then it would be

Re: [OSM-dev] Scale of downloaded images seems to vary.

2018-01-10 Thread Bjoern Hassler
Dear friends, I was just wondering whether anybody else had any thoughts on this? Any tips on making sense of the mapnik_scale would be greatly appreciated! Bjoern On 3 January 2018 at 17:21, Bjoern Hassler <bjohas...@gmail.com> wrote: > Hi Bryan, hi Darafei, > > That's helpful

Re: [OSM-dev] Scale of downloaded images seems to vary.

2018-01-03 Thread Bjoern Hassler
221268 > dLon2 = bbox2[1][1] - bbox2[0][1] > > 0.117416574 > iD.geoLonToMeters(dLon2, (bbox2[1][0] + bbox2[0][0])/2) > > 8604.30156213755 > > (image2 is 8.604 km x 6.550 km) > > > Bryan > > > > On Jan 1, 2018, at 6:56 AM, Bjoern Hassler <bjohas...

Re: [OSM-dev] Scale of downloaded images seems to vary.

2018-01-01 Thread Bjoern Hassler
wrote: > Images are in Spherical Mercator EPSG:3857 projection, so linear scale is > off by cos(lat). > > On Sun, Dec 31, 2017, 20:07 Bjoern Hassler <bjohas...@gmail.com> wrote: > >> Dear friends, >> >> I'm trying to make sense of the scales for map images d

[OSM-dev] Scale of downloaded images seems to vary.

2017-12-31 Thread Bjoern Hassler
Dear friends, I'm trying to make sense of the scales for map images downloaded from OSM. For the download, you can choose the scale, and I had assumed that I could use this to convert to an actual map scale. The downloaded png/jpg etc seem to be at 72dpi. I had assumed I could just convert

Re: [OSM-dev] Automatically triggering export as PDF from openstreetmap.org -> share?

2017-12-23 Thread Bjoern Hassler
us access to the API, so we can try this out. In case people are interested in our project (an atlas of the Ghanaian Colleges of Education), I'll send a link to the final (collated) PDF when we have it. Suggestions and updates remain very welcome! Thanks again! Bjoern On 23 December 2017 at 13:36, Bjoe

Re: [OSM-dev] Automatically triggering export as PDF from openstreetmap.org -> share?

2017-12-23 Thread Bjoern Hassler
Hi Hartmut, thank you! > > https://maposmatic.osm-baustelle.de/maps/10931 Thanks! At DIN A2 SVG has ~100KB, PDF ~200KB, 300dpi PNG 1.3MB (~650K when using > reduced color space) That's very useful to know, and as suspected. > You can re-render the map at any time using the "recreate" icon

Re: [OSM-dev] Automatically triggering export as PDF from openstreetmap.org -> share?

2017-12-22 Thread Bjoern Hassler
Hi Joost, hi Martin, thanks for the comments - I'll have a look. I may just print the maps by hand from the OSM site for now, and look into more advanced options in the future. QGIS lets you export / print to raster (png), pdf (AFAIK both, raster and > vector, there's an option "print as

Re: [OSM-dev] Automatically triggering export as PDF from openstreetmap.org -> share?

2017-12-22 Thread Bjoern Hassler
Dear Frederik, dear Paul, Thank you for your message! I suppose I made the mistake of asking for a technical fix, rather than fully explaining the problem... I have 40 small, discontinues areas in Ghana (the 40 public colleges of education), like this

[OSM-dev] Automatically triggering export as PDF from openstreetmap.org -> share?

2017-12-21 Thread Bjoern Hassler
Dear friends, Suppose I have a standard OSM URL, e.g. as follows: URL1 = http://www.openstreetmap.org/way/450562441#map=16/7.4129/0.4631 Is it possible to automatically produce a PDF, say via URL something like this: URL2 = URL1?format=PDF=800x1000=2500 The idea would be to produce a PDF in

Re: [OSM-dev] Subscribing to objects I have edited

2017-06-24 Thread Bjoern Hassler
, Bjoern On 24 June 2017 at 10:42, Bjoern Hassler <bjohas...@gmail.com> wrote: > Dear friends, > > Further to my message on talk, how would you retrieve the history of an > object from OSM via an API? > > I am aware of diff/adiff in overpass, but as far as I can see

[OSM-dev] Subscribing to objects I have edited

2017-06-24 Thread Bjoern Hassler
Dear friends, Further to my message on talk, how would you retrieve the history of an object from OSM via an API? I am aware of diff/adiff in overpass, but as far as I can see overpass can't produce the change set history of an object, or answer the question "Has this object been edited since it

Re: utils2 enhancements

2017-06-21 Thread Bjoern Hassler
ual menu would greatly help to summarize possible actions when > pressing the left mouse button. > > For example, the Replace geometry action would be proposed when either a > node or way building are selected simultaneously with a new way. > > Pierre > > > ---

Re: utils2 enhancements

2017-06-21 Thread Bjoern Hassler
inc...@josm.openstreetmap.de> wrote: > If it's specific to buildings it might be better to enhance the > building_tools plugin: > http://wiki.openstreetmap.org/wiki/JOSM/Plugins/BuildingsTools > > You can then submit a patch on the JOSM bugtracker for review. > > Cheers, > Vincent > &g

utils2 enhancements

2017-06-21 Thread Bjoern Hassler
Dear friends, we've been looking at developing some plugins for JOSM, e.g. to facilitate fixing certain issues (e.g. assistance in replacing node-buildings by way-buildings, similar to 'replace geometry') as well as assistance adjusting residential areas (e.g. setting an arbitrary but consistent

Fwd: file caching (in scripting plugin)

2017-06-21 Thread Bjoern Hassler
doesn't work though. Many thanks! Bjoern -- Forwarded message ------ From: Bjoern Hassler <bjo...@gmail.com> Date: 26 May 2017 at 11:05 Subject: file caching (in scripting plugin) To: josm-dev@openstreetmap.org Dear all, the scripting plugin can load files from disk, e.g. in j

[OSM-dev] Moving tags in JOSM

2017-06-08 Thread Bjoern Hassler
Dear all, I've got a couple of questions about moving tags in JOSM. (1) The only time you get a "merge tags" dialog seems to be when merging nodes. E.g. copy/paste tags overwrites silently and utils2 functions also overwrites silently. (Though e.g. you could use Shift+R to go from object 1 to

Moving tags in JOSM

2017-06-08 Thread Bjoern Hassler
Dear all, I've got a couple of questions about moving tags in JOSM. (1) The only time you get a "merge tags" dialog seems to be when merging nodes. E.g. copy/paste tags overwrites silently and utils2 functions also overwrites silently. (Though e.g. you could use Shift+R to go from object 1 to

Re: [OSM-dev] Fwd: Printing to PDF

2017-05-27 Thread Bjoern Hassler
Hi Hartmut, thanks for that! > > Tracks and named Waypoints are rendered when using the new experimental > GPX Track upload feature. > > Level of details depends on the auto-calculated zoom level, so for > showing buildings at low zoom levels the underlying stylesheets would > need to be

[OSM-dev] Fwd: Printing to PDF

2017-05-27 Thread Bjoern Hassler
Dear all, thanks for comments! I basically want to preserve the detail, e.g. buildings. It's a rural area (Fiwila, Zambia), so even after extensively mapping roads and buildings (thanks for new DG Premium), there isn't that much data (e.g. about 2,000 buildings in the area). (1) maposmatic -

JOSM - two instances (OS X)

2017-05-26 Thread Bjoern Hassler
Hi all, I map for HOTOSM, which offers the download of a GPX file, to see the area you're editing in JOSM. I've got JOSM set up as default app for opening GPX (OS X). For every GPX file I download, JOSM launches a separate instance. I'm sure this didn't use to happen. Should I report this as a

Re: [OSM-dev] Wikipedia/OSM integration - round trip?

2017-04-27 Thread Bjoern Hassler
le in bing/mapbox) - so it's been helpful to me. Final question: (Also, the OSM search doesn't return anything for the wikidata object > http://www.openstreetmap.org/search?query=Q925624 - would be great if it > did.) Should this be addressed? Thanks! Bjoern On 27 April 2017 at 13:11

Re: [OSM-dev] Wikipedia/OSM integration - round trip?

2017-04-27 Thread Bjoern Hassler
nd you will find the matches .. > * 7 candidates found > * Items with no match found in OSM : 9 items > > Best, > Imre > > > 2017-04-26 17:03 GMT+02:00 Bjoern Hassler <bjohas...@gmail.com>: > >> Hello all, >> >> I'm interested in working ac

[OSM-dev] Linking OSM and Wikipedia - WIWOSM

2017-04-16 Thread Bjoern Hassler
Dear all, I just wanted to check that WIWOSM is still active. If so, should I be using wikidata tags (wikidata=Q123), or stick with article names (wikipedia=en:xyz)? Many thanks, Bjoern ___ dev mailing list dev@openstreetmap.org

[OSM-dev] Dev help on "overpass turbo / table display"

2016-07-18 Thread Bjoern Hassler
Hi all, This pull request https://github.com/tyrasd/overpass-turbo/pull/18# has been open for some time, but the original developer currently doesn't have much time to complete it at the moment. IMHO this is a super-useful feature that adds a 3rd tab to overpass turbo to view the data retrieved

[OSM-dev] Wiki account creation, "Account creation error Incorrect or missing CAPTCHA."

2016-07-01 Thread Bjoern Hassler
Hi all, I've just tried to create an account on the wiki, but I get the following: Account creation error Incorrect or missing CAPTCHA. However, below the text "To protect the wiki against automated account creation, we kindly ask you to type the two words you see in the box below:" there's no

Re: [OSM-dev] Simple app for "making contributions" (not to display maps)

2016-06-29 Thread Bjoern Hassler
Hi Simon, Rory, Guillaume, Frederik, Martin, Mikael, Thank you for your input - that's very helpful and appreciated. Let me try a digest reply. Overall, I'm thinking of something much simpler than displaying maps. Overall, there's (at least) two different areas: (1) Traces (2) Tags / resolving

[OSM-dev] Simple app for "making contributions" (not to display maps)

2016-06-29 Thread Bjoern Hassler
Hi all, first post to the list - hope this is of interest. The background to my question is working is areas where map coverage is poor (e.g. parts of Africa). Sometimes only low-res satellite/bing imagery is available, sometimes obscured by clouds. In some low populated areas a GPS trace could