[Talk-GB] New OOC OS 1:25,000 tiles (beta)

mick bareman at tpg.com.au
Fri Feb 24 23:39:24 GMT 2012


On Fri, 24 Feb 2012 11:28:02 -0000

many thanks to those involved in this project, I found it much easier and smoother than my last look at the existing OOC, WELL DONE

mick

"Andy Robinson" <ajrlists at gmail.com> wrote:

> Thanks to Grant there is now a new beta version of the Out-Of-Copyright OS
> 1:25,000 mapping available currently viewable at
> http://faffy.openstreetmap.org/?zoom=6&lat=54.46526&lon=-2.50923&layers=00B0
> (note this address may change in the future).
> 
> The process used is different from that currently visible at
> ooc.openstreetmap.org in that the maps are tiled and delivered by MapServer
> on the fly which means that the task of rectifying and tiling each map sheet
> isn't required, instead MapServer uses the georeferenced original TIFF
> scans.
> 
> The main benefit to users now is that the whole of each map sheet is visible
> (the old method sliced off edge tiles for isolated sheets during the tiling
> process). 
> I've added info for JOSM users on the wiki
> (http://wiki.openstreetmap.org/wiki/Provisional/First_Edition#JOSM). It
> needs testing in Potlatch and Merkartor . Note that the tiles are now png
> rather than jpg if you are simply making a server name change in the editor
> settings.
> 
> The main benefit in the longer term is that the vast number of maps sheets
> donated by Glasgow University will be available much more quickly once they
> have been scanned.
> 
> Mapserver has been set up to serve index colour tiles (to maintain
> performance) which may result in some sheets not being as colour rich as
> with the old tiles. This will be improved as new scans come online. To check
> out what the new ones should look like pan over to sheet TG41 on the Norfolk
> coast, especially in contrast to TG40 to the south of it.
> 
> If you click the layer tab from the faffy map view you will also note that
> the latest OS Streetview and  the Surrey County Air Survey are also being
> served by MapServer in the same way.
> 
> Bear in mind that this instance of MapServer is still very much in testing
> mode so the facility may go offline at times.
> 
> Cheers
> Andy



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