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On 30/10/2012 22:33, Dudley Ibbett wrote:
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<div dir="ltr">Hi<br>
<br>
My version of JOSM seems to have just updated on my Fedora system and I
now have NLS OS 1:25k 1st Series 1937-61 imagery. <br>
<br>
I am probably behind the times but presumably this can be used for
mapping. If someone could confirm its use this would be appreciated.
I appreciate its accuracy will need to be considered along with all the
other data sources.<br>
</div>
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<br>
Yes. In the UK, "Crown copyright", under which OS maps are published,
extends for 50 years. So as long as there are no maps beyond 1961,
using them is fine.<br>
<br>
<blockquote cite="mid:DUB115-W2124D30DE1F8280AAEBF2BC6620@phx.gbl"
type="cite">
<div dir="ltr"><br>
If it can be used it will be very helpful as it has field boundaries as
well as public rights of way. There are a number of other imagery data
sources that have also been added but not all seem to display.<br>
</div>
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<br>
I certainly use them for both in the slow-changing Yorkshire Dales and
they are also a great source of rural names. Note two things:
Alignment is OK but not brilliant, due to paper stretch and the survey
techniques used at the time, you will constantly have to re-align to
GPS traces every couple of kilometres or less. And secondly the paths
are just paths and do not signify any public right-of-way. I usually
map them, (diligently using the source tag as well as access=unknown),
and then go out and see if they are there. A surprisingly large
proportion simply no longer exist in any form and need to be removed.<br>
<br>
Good luck!<br>
Mike<br>
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