Street Mapping

[martin]

A short while ago I discovered that OS1250 maps of half of England are available on the ELGIN website as scaleable vector graphics files.

I can now convert large areas (several square km) into Ocad8 street or country (base) maps (not templates) in a few minutes, with a resolution of centimetres.



Is this useful?
Is it covered by 'based on OS mapping...' on the map and BO/OS agreements?

[mikey]

Is this an offer??

[madmike]

Can you post the link - looks interesting

[martin]

The ELGIN link is http://www.elgin.gov.uk

Its a bit cumbersome, but if you zoom in to a map, when you get to about 1m resolution you get detailed OS maps.

Try this longer link for a small 200m by 200m section of Canterbury at 10cm resolution.

http://www.elgin.gov.uk/GetSvgMap.aspx? ... E%20M1%3D1

The svg file can easily be saved by your browser.

I have written a Delphi3 program to convert the svg file directly into Ocad8. It takes any predefined Ocad8 file and appends the converted map. There is a text file symbol translation table which takes each svg area/border/line symbol and (optionally) converts into a chosen Ocad symbol. Scale and rotation are also specified in this file.

Ocad file sizes are about 1Mbyte per square km for urban areas.

The conversion program is freely offered.

[Wayward-O]

Using IE7 in Vista, trying to get into the maps crashes the browser for me . Opens OK in Firefox 3.1b2 .

As said, interface is very clunky and I don't appear to be able to zoom in closer than 1:1,250. How did you create the Canterbury section?

Pity there are no contours or it could be VERY useful.

[Angry Haggis]

Pity there are no contours or it could be VERY useful.

You can derive contours from NASA SRTM data if you are GISy/techy: http://wiki.openstreetmap.org/wiki/Contours

They'll require a lot of cleanup (i.e. adding bezier curving and removing artifacts) if used for a "proper" orienteering map, but it's a good base to work from - and public domain so completely free to work from - no copyright considerations. Certainly useable for an amateur map in an urban area where the precise detail is not important.

[martin]

To zoom in further on Canterbury.

1. In elgin.gov.uk, right click on the map and open in a new window.

2. Edit the (long) url (eg in notepad). Remove references to most of the layers and the corresponding layer vars, except for the mmL and mmA layers, as in the canterbury url above. Edit the landranger 2 figure grid ref in the two layervars, and edit the OSx and OSy coordinates (metres) for the bottom left and top right of the map, and edit the width and height (pixels) to get the required resolution. The coordinate deltas in the svg file are in pixels, so the download svg file size only doubles when going from 1m to 0.1m resolution. Streetmap for example will convert coordinates for the arrow to OSxy and landranger.

[rob f]

Any chance of getting hold of Delphi3 program?

[mikey]

ditto

[DavidJ]

A short while ago I discovered that OS1250 maps of half of England are available on the ELGIN website as scaleable vector graphics files.

I can now convert large areas (several square km) into Ocad8 street or country (base) maps (not templates) in a few minutes, with a resolution of centimetres.

Just noticed that the ELGIN site has changed and it now appears to only go down to 1:5000 with really rather poor quality maps. Anyone know where else the OS1250 maps can be found?

Thanks - David

[martin]

The OS1250 maps are still there, but there appears to be no direct link on the elgin website. For example the canterbury link in the 4th post above still works, and the links from my svg2ocd program are still working.

I have also seen 1250 maps on several county websites.
Dorset explorer. A nice site with detailed aerial photos also.
Lancashire (Mario).
Cheshire.
http://maps.cheshire.gov.uk/cheshirecc. ... fault.aspx
Staffordshire.

Some of these go 'over the border' and half way into the next county.

also you could try the magic website

http://www.magic.gov.uk/website/magic/default.htm

or local authority websites
http://maps.stockport.gov.uk/planaccess ... 1&zoom=400

[geomorph]

Northamptonshire has had this:

http://www3.northamptonshire.gov.uk/Mapping/

for about 10 years.

It's clearly linked to Elgin, but the UI the next level of sophistication - but still crude.

Don't know whether you can get actual files though. Maybe Martin you can enlighten me?

[Marco Polo]

the 'Print map' option has allowed me to get a nice gif file of the centre of Corby.
Don't have a security solution to use the map for an event though.

[martin]

Some links for Dorset, Cheshire, Shropshire and Lancashire:
The Dorset sites go as far as Southampton, Salisbury, Bath and Honiton at 1:1250 and
covers the whole country at 1:10k if you select the OSUK10k layer. This legacy of foot and mouth is also reasonably fast.
The Cheshire sites cover half of Greater Manchester. You can also get some interesting old tithe maps.
The Shropshire site goes at least as far as Stafford.





http://195.49.180.76/DorsetExplorer/
http://dorsetccgisdev.info/dorsetexplor ... 0&zoom=200
http://maps.dorsetforyou.com/roadworks/map.aspx
http://maps.cheshire.gov.uk/roadworks/
http://maps.cheshire.gov.uk/tithemaps/TwinMaps.aspx
http://maps.cheshire.gov.uk/cheshirecc. ... fault.aspx
http://maps.shropshire.gov.uk/website/s ... iveLayer=0
http://mario.lancashire.gov.uk/viewer.htm