[OSM-talk] Out of Copyright Maps - ABC London

[Patrick Weber]

Quoting Thomas Wood <grand.edgemaster at gmail.com>:

> On 10/18/07, Patrick Weber <p.weber at ucl.ac.uk> wrote:
>> Hi
>>
>> I thought some might find this useful, I have georeferenced the detailed
>> London Streetmaps called ABC London from 1933 . I have done parts of
>> South London so far, and have used them to quickly digitise some areas
>> using potlatch's Yahoo Aerial Imagery Layer.
>>
>> I have put them online at the following address:
>> http://www.spatialknowledge.eu/ABCAtlas/openlayers.html
>>
>
> Very nice, the rectification is a bit wobbly in places.
>

I did the georegistration using Yahoo as far as I could, but then again
I am not
too shure about the geometric accuracy of the streetmaps, if you compare 
with
the aerial imagery. The point is more about a rough match to easily
find street
names after you have digitised the road network from the aerial imagery.


>>
>> I wondered, how can I with OpenLayers overlay the OSM Mapnik/OSMArender
>> Layer on top of these maps, and add transparency ?
>>
>> Cheers
>>
>> Patrick
>
> To add an OSM layer over the top, they will all have to use the same
> projection. I have no idea what yours is, but the OSM one is a
> mercator  projection.
>

Okay, ill investigate when I have a bit more time. I can output the map 
at any
projection I want, so thats no problem. I believe its in the same 
projection.


> It would be nice to have these tiles as a WMS service for use in JOSM.

I dont have access to a server supporting WMS, so this is the best I can do.


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