14 November 2007

New Draggable Geograph Map (Beta)

New Draggable Geograph Map

Geograph Map just got easier to use...

Geograph Draggable Map Beta
New draggable maps using Ordnance Survey 1:50,000 mapping (Landranger series)
What is Geograph?
"The Geograph British Isles project aims to collect geographically representative photographs and information for every square kilometre of the UK and the Republic of Ireland, and you can be part of it."

Draggable Geograph Map of Great Britain (beta)

64% complete for the British Isles

How is this done?
Servers “Jam” “Toast”, “Scone” and “Crumpet” (a good start to any day)

This site uses an Educational Licence from the Ordnance Survey
"Great Britain 1:50 000 Scale Colour Raster Mapping © Crown copyright Ordnance Survey. All Rights Reserved. Educational licence 100045616."

How is the done?
"But basically it just (JUST!?) involved cutting up 12GB of raw tiff files from the
OS, into more manageable png chunks using imagemagick, and then on
demand but cached on disk it cut into png tiles. The overlay is also
generated in php, ondemand and cached with memcached. And of course it
using openlayers as the client library."
Barry Hunter (nearby.org.uk)

Mapperz thanks Barry for sharing his time and tweaks on this. Well done and keep up the good work.

Just a quick note to UK Teachers out there - the 16th November is the last date to get Free Ordnance Survey Maps (for 11 year olds)

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