For what it's worth, what I tend to do:
If the roundabout has a sign on it giving a name, or the signs leading up to the roundabout give it a name, then obviously I use that.
Otherwise, I look at all the roads serving the roundabout.
If there is one road which is 'larger', 'more important' which runs either side of the roundabout, then I give the roundabout the same name as this road.
If the roundabout is at the end of the main road, or there are differently named main roads of equal classification serving the roundabout, then I leave it unamed.
I'm trying to add a photo I took as a background layer in JOSM.
From reading the help docs, I see that I have to upload the image to MetaCarta, then link to it that way.
I uploaded the image and added control points ok, got the link and added the layer in JOSM.
Josm says "WMS layer (MetaCarta Map Rectifier (7495)), automatically downloading in zoom 125.5 m", but nothing ever appears, apart from a few single grey pixels around the approximate area.
I'm pretty certain the upload/rectification worked ok; I can download the .tif which looks ok, and I was able to add the wms link as a new layer to the right-hand map on the upload webpage (just to see whether it would work, which it did).
Any ideas why it's not displaying in JOSM?
May I ask for a bit of advice with this validation error in JOSM please? An example of that is thrown by the validator is here:
The multipolygon is a school, and the inner ways are buildings, sports pitches, car parks etc. I've made sure I tagged the relation rather than the outer way, but as far as I can see the inner ways need tags.
What should I do to keep JOSM happy, whilst still being able to identify the various elements in these multipolygons.
BTW, the area is rendered perfectly in OSM. I'd just like to clear the validation error.
I fully understand and accept why the decision was taken to change the licence, but wow, the redaction process has screwed with quite a few ways in my local area. :-(
Guess I'll just have to pick my way through with Josm's validator, and make a list of everything that needs re-surveying. :-( :-(
In the area I am currently editing data, the Bing imagery is offset slightly differently between zoom levels. So if I draw the ways to match the photo, then zoom in, the ways all look a little wrong.
If I define a new offset, it moves the imagery at all the zoom levels. Is there a way to shift just one zoom level?
Also, is it possible to change the zoom level at which it switches to different images? The high-zoom images are much higher quality. When I zoom out a couple of levels, the imagery switches to a lower-resolution, blurry image. I would like it to use the better images for a few more levels of zoom.
I can right-click and deselect auto-zoom, but then if I move too far I just get a black screen.
Hopefully I've made myself clear!
Glad you're starting to come to terms with JOSM.
Just one thing I'd caution against is automatically assuming your GPS tracks are more accurate than the photo. They might be, but quite often consumer-grade GPS devices with their tiny aerials can be up to tens of metres out, especially when there are lots of buildings around.
However, the photo might be off slightly too. I shall read with interest the replies regarding that, as that's something I'd like to learn more about.
JOSM can be a bit daunting at first, but it's worth sticking with if you plan to do a lot of mapping, as (for me at least) you can build up a quicker workflow, and there are lots of useful tools and plugins for it.
I think that error would have appeared when you clicked on an Edit link on the webpage somewhere, hoping that the browser would pass the details through to JOSM. For me, that command gets blocked by Firefox's security (ABE), so maybe that's your problem.
However, you don't need to do it this way. Just manually start JOSM (run the JOSM.jar file, located wherever you installed it), and then click the 'Download map data' button (3rd from the left on the main toolbar for me), or File->Download from OSM..
To get the aerial background image, use the imagery menu, select a server and then wait a few seconds for it to download and appear. Note that in the layers window on the right, you can use the button that looks like an eyeball to toggle the layers on and off, and I find that turning down the opacity of the aerial layer (using the next button along) to about half makes it easier to see what you're editing. If the first server you chose isn't any good, use the trashcan button to get rid of it and try another one.
Not sure how your GPS records data, but if you end up with .gpx files, open these (using the first button on the left in the main toolbar, or File->Open) and the track will appear on it's own layer. If your GPS (or whatever phone app you end up with) enables you to record voice memos, then you might get a wp.gpx file - opening this will show little icons all over your map. Clicking on one will play the audio clip or show the photo or whatever. Dead useful.
You'll have to get used to dragging the map round with the right mouse button in JOSM. S is a shortcut for select mode, A is a shortcut for add. I could go on, but it's probably easier for you to just play around with it.
Stick with it. As you start to use it, you'll discover all sorts of useful stuff in there.
I thought Google was allowed to take data from OSM? Or did that change with the change in licence a year or two back?
I'm pretty certain Google /used/ to take data - I seem to recall edits I'd made turning up in Google.
Perhaps they used to, then stopped when the licence changed, and that is why you are seeing things that are similar to OSM edits but not exactly the same..
Just a thought anyway. Personally, I'd be happy for my work to make it into Google Maps and any other mapping website. I'm doing it for the general benefit of my community after all.
I'm using an old HTC TouchPro phone and OSMTracker to record tracks, before editing them in JOSM.
The phone doesn't get used for anything else, and doesn't have a sim card in it, and so I usually have to reset the clock when I switch it on to go out mapping. The last couple of times, when I've uploaded the wp.gpx and tp.gpx files, it all looked ok, but clicking on any of the audio clips past the first couple resulted in the message "This is after the end of the recording", twice.
If I edit the time stamp of the clip in question in the wp.gpx file to match, say, the first clip, which played ok, then this clip plays too, although I still get the warning. The first time this happened, I thought I'd just set the phone's clock to the wrong time zone, but this time I definitely got it right, and the timestamps (and filenames) of the audio clips are within the timestamps of the tp.gpx timestamps.
So my question is, how does JOSM calculate the time of the audio clip, and of the recording in total?
Here are the first and last few tp.gpx lines:
<trkpt lat="51.5877151" lon="-1.8085870"><ele>106</ele><time>2012-01-08T08:22:22Z</time></trkpt>
<trkpt lat="51.5877331" lon="-1.8086346"><ele>102</ele><time>2012-01-08T08:22:23Z</time></trkpt>
<trkpt lat="51.5877307" lon="-1.8086310"><ele>102</ele><time>2012-01-08T08:22:24Z</time></trkpt>
<trkpt lat="51.5877359" lon="-1.8086228"><ele>102</ele><time>2012-01-08T08:22:25Z</time></trkpt>
<trkpt lat="51.5876564" lon="-1.8086599"><ele>110</ele><time>2012-01-08T09:57:29Z</time></trkpt>
<trkpt lat="51.5876461" lon="-1.8086251"><ele>109</ele><time>2012-01-08T09:57:30Z</time></trkpt>
and here are the first few wp.gpx entries:
<wpt lat="51.5831284" lon="-1.8007773"><ele>112</ele><time>2012-01-08T08:26:44Z</time><name>voice</name><link href="20120108_082644.wav" /></wpt>
<wpt lat="51.5831709" lon="-1.8004970"><ele>111</ele><time>2012-01-08T08:27:06Z</time><name>voice</name><link href="20120108_082706.wav" /></wpt>
<wpt lat="51.5832948" lon="-1.7988586"><ele>109</ele><time>2012-01-08T08:27:32Z</time><name>voice</name><link href="20120108_082732.wav" /></wpt>#
The first clip, at 08:26:44 plays ok, the other two (and all subsequent ones) don't.
I'd appreciate any assistance anyone could offer.
I'm a regular OSM uploader, gathering data with OSM Tracker on a bike. I also do some mapping abroad, for which I obviously need to pre-download a set of tiles before I head out. I tried using JTileDownloader, but didn't have much luck with it, and actually since a laptop upgrade it doesn't seem to work for me at all.
So I've written my own program in Visual Basic. It does pretty much what JTileDownloader was supposed to do, plus it has a slippy-map interface for selecting an area of tiles and it can poll and parse the /status message for previously downloaded tiles, updating those that need it.
I'd love to share it with the community, but whilst developing it, I came across the Tile Usage Policy.
Would the type of application I've written contravene this, do you think? If so, did JTileDownloader contravene it too, or was there something specific about it that made it 'legal'? I seem to remember it would pause for a few seconds after every few tiles - perhaps this was required to abide by the policy.
BTW, does anyone else find things a bit daunting here sometimes? I'm not sure whether I should be asking this in help.openstreetmap.org, forum.openstreetmap.org or one of the mailing lists..
Anyway, thanks for you time
Disregard. I thought I had come across it in several postings, but now I can only find this one
And it seems it was just the OP, so maybe he had some odd spell checker problems, rather than the forum..
Please could I askyour opinions about the best way to add areas showing housing in a suburban environment.
I'm currently drawing little polygons, a little way inside the enclosing roads, as this seems to be the way a lot of London has been drawn. I notice that if the polygon actually shares the nodes of the road, then JOSM complains about overlapping ways, so I presume that is deprecated.
However, I've also tried just blocking off areas, crossing over roads in the process. (for example here ) This is generally less work, and also possibly looks better as there isn't a gap between grey 'background' and the road when zoomed right in. Is this way of doing things acceptable? Preferred? Going to break something?
Dog waste bins - I don't add these but that may be a rather short sighted decision on my part. I can certainly see why some people would be interested in knowing where these are. I don't think it is of general enough interest, however, so would personally prefer not to see them rendered even if they are included in the database. amenity=dog_waste_bin seems a reasonable, unambiguous tag to me.
I think you're right. I'm going to start noting these too.
Ahh, I see. That doesn't seem completely intuitive (I would never have worked it out), but if that's how the majority of people search then fair enough.
I have to say I think it would also be useful it the results were shown as a lot of arrows all at once on the map too. Presumably all this got worked out in the early days of the map..
I've added several recycling sites to the map in Bahrain. But when I search for 'recycling' with the map zoomed to show the island, the search results are.. all for Germany!
I had expected the search to look in the tag values and keys for the currently displayed data set. Why doesn't it do this? It seems to make the search function somewhat useless, and surely makes the whole map a lot less useful
Have I completely misunderstood something?
Please could you give some suggestions as to what I should label a Country Club as? It's an area containing fields, gardens, sports facilities such as tennis courts, various buildings and so on. I realise I could try to label each idividual thing, but since it's a private club, I think it should all be labelled as the club, unless they choose to label their own things themselves. Plus, since I'm not a member, I can't say what everything is anyway.
Just a very quick question:
Is there a way of gettting a scale bar to display on the map? (If that is not the right name for it, what I mean is a horizontal line which shows how long 1km or whatever is on the map)
It would be useful for me to work out what radius of tiles I need to download to OSMtracker, but I think it is a pretty fundamental part of a map anyway.