Re: [Talk-GB] Ordnance Survey 7th series available
Steve Chilton wrote: I am pleased to announce that the first of the OS 7th series out-of-copyright maps are available for use in OSM. Steve, The list of sheets on the wiki pages doesn't include any information for list sheet 79, Stranraer -- it doesn't have any colour markings. Is this just an omission? Having raided my Father-in-law's map collection, I now have a copy (folded, unfortunately) of this sheet. Would this be any help? Jonathan ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
David, TomH has moved stuff about a bit on dev so that all OOC content is served from the same space. To browse the Out Of Copyright mapping (NPE/7th/1st) then go to: http://ooc.openstreetmap.org/ use the layer switcher to view each series. For the WMS, you now need this in JOSM: http://ooc.openstreetmap.org/xxx/wms/map.php? where xxx is: npe, os7 or os1 depending on which map series you want. At the moment the 1:25k 1st series isn't selectable as a potlatch background. That will get sorted sometime soon enough. Presently only a few sheets have been uploaded (most in Scotland or Northumberland). You can keep up to date with changes related to OOC mapping via the wiki here: http://wiki.openstreetmap.org/wiki/Out_of_copyright Cheers Andy -Original Message- From: David Earl [mailto:da...@frankieandshadow.com] Sent: 11 October 2009 3:43 PM To: Andy Robinson (blackadder-lists) Cc: talk-gb@openstreetmap.org; 'Steve Chilton'; 'Shaun McDonald' Subject: Re: [Talk-GB] Ordnance Survey 7th series available On 07/10/2009 14:07, David Earl wrote: On 07/10/2009 12:28, Andy Robinson (blackadder-lists) wrote: Which NPE WMS are you using. Is it by any change the nick version on dev? Indeed it is. That's presumably the setting I've had all along. I get a much better alignment for that area with the re-rectified NPE tiles from TimSC's space at http://dev.openstreetmap.org/~timsc/wms2/map.php? Yes, indeed, vastly better (and the images are clearer too, and the tiles braking up problem isn't there). Even if I pan several tens of km it is still in sync, and it seems to be in sync from the download - no initial adjustment needed. So the fix is to remove the old ones :-) Thanks, that will improve my mapping enormously. No sooner discovered than gone - I'm getting big red boxes with Exception Occurred in JOSM and if I try to follow the link to the timsc npe maps I'm getting 404's. Has something changed? David ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
NPE maps have always had major alignment problems which have seemed to me to be worse in the eastern side of the country. There's also a new problem, but I don't know whether it is in the JOSM WMS plugin, the tile server or what. Consider three JOSM screenshots: http://www.frankieandshadow.com/xref/josm1.png http://www.frankieandshadow.com/xref/josm2.png http://www.frankieandshadow.com/xref/josm3.png The first is Landsat, obviously. It defaults with an offset of about 100m vertically and horizontally in my part of the world (52N 0E) as can be seen from the obvious course of the road on the satellite images at the orange arrows. But once the layer is aligned on known points, it tends to be aligned across the whole working area. NPE maps in contrast, in the second one, firstly has a relative displacement of tiles (about 150m) in JOSM which is obvious in this unadjusted download. (We also have to add to that that the map sheet boundaries don't line up anywhere near accurately) The third one though shows that even within a single tile, the alignment drifts extremely rapidly. I aligned the third one with the junction at point 1 near the top left of a tile, and you can see that at the bottom right of the tile, the bend I've marked is off by about 150m horizontally and 115m vertically over a distance of about 1500m - 10%. All the roads in this area are GPS surveyed (I did them). I mentioned this when NPE maps first arrived, but it's never been addressed. Is it a rectification problem, or a problem of how JOSM or the WMS plugin scales or displays the tiles? The tile displacement problem is recent and I'm sure that will easily be fixed. The variation across a tile is more awkward I think. David ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
David, Which NPE WMS are you using. Is it by any change the nick version on dev? I get a much better alignment for that area with the re-rectified NPE tiles from TimSC's space at http://dev.openstreetmap.org/~timsc/wms2/map.php? Cheers Andy -Original Message- From: David Earl [mailto:da...@frankieandshadow.com] Sent: 07 October 2009 11:23 AM To: Andy Robinson (blackadder-lists) Cc: 'Steve Chilton'; 'Shaun McDonald'; 'Frankie Roberto'; talk- g...@openstreetmap.org Subject: Re: [Talk-GB] Ordnance Survey 7th series available NPE maps have always had major alignment problems which have seemed to me to be worse in the eastern side of the country. There's also a new problem, but I don't know whether it is in the JOSM WMS plugin, the tile server or what. Consider three JOSM screenshots: http://www.frankieandshadow.com/xref/josm1.png http://www.frankieandshadow.com/xref/josm2.png http://www.frankieandshadow.com/xref/josm3.png The first is Landsat, obviously. It defaults with an offset of about 100m vertically and horizontally in my part of the world (52N 0E) as can be seen from the obvious course of the road on the satellite images at the orange arrows. But once the layer is aligned on known points, it tends to be aligned across the whole working area. NPE maps in contrast, in the second one, firstly has a relative displacement of tiles (about 150m) in JOSM which is obvious in this unadjusted download. (We also have to add to that that the map sheet boundaries don't line up anywhere near accurately) The third one though shows that even within a single tile, the alignment drifts extremely rapidly. I aligned the third one with the junction at point 1 near the top left of a tile, and you can see that at the bottom right of the tile, the bend I've marked is off by about 150m horizontally and 115m vertically over a distance of about 1500m - 10%. All the roads in this area are GPS surveyed (I did them). I mentioned this when NPE maps first arrived, but it's never been addressed. Is it a rectification problem, or a problem of how JOSM or the WMS plugin scales or displays the tiles? The tile displacement problem is recent and I'm sure that will easily be fixed. The variation across a tile is more awkward I think. David ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
[Talk-GB] Ordnance Survey 7th series available
I am pleased to announce that the first of the OS 7th series out-of-copyright maps are available for use in OSM. Very brief details of the sheets and how to access them is available on the wiki at http://wiki.openstreetmap.org/wiki/7th_Series Thanks to TimSC for rectification work and setting up for WMS for JOSM, and to Richard for the Potlatch link. Those available are just the first of the 23 that are out-of-copyright right now, mainly in Scotland. More shortly. This is an ongoing project, and more sheets will be available to use a) as they come out of copyright, and b) are rectified and tiled. Any problems please contact me. Cheers STEVE ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
On 6 Oct 2009, at 21:24, Frankie Roberto wrote: 2009/10/6 Steve Chilton s.l.chil...@mdx.ac.uk I am pleased to announce that the first of the OS 7th series out-of- copyright maps are available for use in OSM. Very brief details of the sheets and how to access them is available on the wiki at http://wiki.openstreetmap.org/wiki/7th_Series Wow, they are beautiful maps! I've just had a go at using them as a background in Potlatch, looking at Campbeltown. There are plenty of roads on the map that aren't on OSM. Is it reasonably safe to assume that these probably do still exist, and can be added to OSM (with appropriate source tag?) Press b in Potlatch to get the source tag added. I have noticed that the status of some of the roads seem to have changed in Dumfries, so I think that local knowledge would be useful for this one. I've noticed that there is an offset in Dumfries that is noticeable (the current data is based on GPS). I've not checked to see how widespread the problem is. Shaun smime.p7s Description: S/MIME cryptographic signature ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
If you can quantify any displacement it would be useful. We intend to try to check this and see if any improvements can be made to the process. Cheers STEVE -Original Message- From: Shaun McDonald [mailto:sh...@shaunmcdonald.me.uk] Sent: Tue 06/10/2009 21:36 To: Frankie Roberto Cc: Steve Chilton; talk-gb@openstreetmap.org Subject: Re: [Talk-GB] Ordnance Survey 7th series available ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
Steve Chilton wrote: If you can quantify any displacement it would be useful. We intend to try to check this and see if any improvements can be made to the process. Another thought - is the displacement constant across the sheet? I've noticed with the NPE sheets that some parts of one sheet are offset one way relative to GPS data, whereas a couple of miles away there's a different offset (and it doesn't look like a sheet fold / not flat issue). ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
Re: [Talk-GB] Ordnance Survey 7th series available
Shaun McDonald wrote: I've noticed that there is an offset in Dumfries that is noticeable (the current data is based on GPS). I've not checked to see how widespread the problem is. Over the other side of the region in Newton Stewart there's a pretty good match between some GPS traces I took last year and the scans: http://www.openstreetmap.org/trace/152649/view Some of the streets in Newton Stewart itself look a bit out, but it's not that consistent -- looks more like a poor fix. ___ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
