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A single message from topic:  Direct loading of background maps   in forum:  Templot talk
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Single message by Martin Wynne       Topic: Direct loading of background maps
Posted: 28 Jul 2017 08:37
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Martin Wynne
West Of The Severn, United Kingdom



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I decided to go ahead and buy a subscription for Templot to the NLS London 1890s maps. :)

I'm well pleased with the results -- this is the shed area at Palace Gates station. See:

 http://www.disused-stations.org.uk/p/palace_gates/

Photos: http://www.disused-stations.org.uk/p/palace_gates/index3.shtml

These are not screenshots made separately and then manually imported and scaled to size.

I simply specified the OS Grid Reference (TQ 301 907) and Templot loaded the map from NLS automatically and at exactly the right scaled size ready to start track planning over it.

This function will be in the next Templot program update.


© National Library of Scotland

© National Library of Scotland


© National Library of Scotland

As you can see I have started aligning some templates over the tracks. These are in P4.

To match prototype turnouts exactly it is necessary to change to CLM unit angles and in most cases to generic V-crossings (it's not worth bothering to do this if you are not using an exact scale/gauge such as P4 or S7).

This crossover then turned out to have 15ft straight switches and 1:10 V-crossings. The switch toes for the crossover then matched the switch location marks on the map.

The accuracy of these 60"/mile maps is surprising -- the track gauge and 6ft way match exactly:



Having paid for a year's subscription to this NLS service I now need to get the next Templot update out quickly so that everyone can get a full year's benefit of it. :)

Just to repeat, this is for London only, and the 1890s. But of course much of the infrastructure remained the same for years, even if track layouts changed a bit.

Now hopefully the NLS will in due course make the 25" maps for the whole country available in the same way, although the subscription fee is likely to be eye-watering.

Here is Palace Gates on the NLS site with a transparency slider so that you can see the modern aerial view:

 http://maps.nls.uk/geo/explore/#zoom=19&lat=51.6017&lon=-0.1218&layers=163&b=2

regards,

Martin.


A single message from topic:  Direct loading of background maps   in forum:  Templot talk
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