Those of us with a map bent - or bent map - may like to know that our friends at

the Ordnance Survey are publishing new editions of the Landranger maps of North

Wales in January.



God willing, they will be sheets 114 (Anglesey) edition B5, 115 (Snowdon)

edition C3, 123 (Lleyn Peninsular) edition B3, and 124 (Portmadog) edition B3.



I wonder if the Maybush scribes will get the detail of our favourite railway at

its southern, urban end right? (cf Explorer sheet OL18 edition A2.)



L

___________________________________________________________________



I would hope so - they've been told, and a kind letter from the Director General

of the OS is on file.



Pedr Jarvis

___________________________________________________________________



Remind me again what's wrong with the Welsh Highland Railway on OL18 edition A2?

The on-line versions seem alright to me - I've attached zipped samples [not

reproduced, but showing the railway line at both 1:25000 and 1:50000 scale].



Steve Harris

___________________________________________________________________



Very interesting.  My paper copies of LR124 and OL18 show a noticeable lack of

the new harbour branch line (or main line as we should call it) from Pen Y Mount

to Spooner's Bar [at Harbour Station].  I've just looked at the OS GetaMap and

lo! there it is!



This is very important for OS fans, as it's the first example I've seen of an

on-line version containing new detail not seen on the current paper edition. 

I've got to think about this.....



I've copied this email to my friend Bill [and Richard Oliver] who will, I'm

sure, have some thoughts on the matter.



Don't go away



Lez

___________________________________________________________________



This is new to me! I don't know what OS's updating procedures are nowadays, but

it would not surprise me to learn that, instead of updating an area to fit in

with the publication/reprint cycle of a particular sheet, i.e. in the few months

immediately before a new printing is scheduled, that instead they are updating

tiles as new information becomes available. This would bring small-scale

revision into line with what is now well-established digital large-scale

practice. It might also nudge some people away from buying the standard

published maps and into OS Select!



Best wishes,



Richard

___________________________________________________________________



The plot is certainly thickening.  I wonder if we're heading for the editionless

edition?!



Lez

___________________________________________________________________



Thanks. We effectively have 'editionless editions' with the large-scale digital

stuff already, where just an annual updated version of the whole database is

supplied to the legal deposit libraries!



Richard

___________________________________________________________________





The example here in Porthmadog give an on-line publication date a good six

months ahead of the paper version.  Are there any more examples out there?

I have certainly found this with a recent example fairly close to me. The

Blunsdon Bypass just north of Swindon is shown as 'under construction' on the

latest published edition of Landranger 173 Swindon & Devizes (edition D1/, pub.

Mar 2007), but is there in all its glory on the 1:50,000 raster on OS Get-a-map.

Edition D2 of LR173 is due in November 2009.

 

There's a similar situation with the Explorer map of the area - sheet 169

Cirencester & Swindon. Edition A1, (pub. Jan 2006) did not show the proposed

route of the bypass at all but edition A2 (pub. Apr 2009) shows it in full. When

I checked around November 2008, there seemed to be an 'intermediate state': OS

Get-a-map's 1:25,000 raster showed the line of the new road as 'under

construction'. Indeed a contemporaneous purchase of OS Select 1:25,000 mapping

of the area confirmed the presence of the dashed magenta line.

 

Ed





--- On Thu, 9/7/09, Lez Watson <Lez4Lynne@...> wrote:





From: Lez Watson <Lez4Lynne@...>

Subject: [ordnancemaps] The birth of the 'editionless' Landranger and Explorer

editions?

To: ordnancemaps@...

Date: Thursday, 9 July, 2009, 8:05 PM

















Those of us with a map bent - or bent map - may like to know that our friends at

the Ordnance Survey are publishing new editions of the Landranger maps of North

Wales in January.



God willing, they will be sheets 114 (Anglesey) edition B5, 115 (Snowdon)

edition C3, 123 (Lleyn Peninsular) edition B3, and 124 (Portmadog) edition B3.



I wonder if the Maybush scribes will get the detail of our favourite railway at

its southern, urban end right? (cf Explorer sheet OL18 edition A2.)



L

____________ _________ _________ _________ _________ _________ _



I would hope so - they've been told, and a kind letter from the Director General

of the OS is on file.



Pedr Jarvis

____________ _________ _________ _________ _________ _________ _



Remind me again what's wrong with the Welsh Highland Railway on OL18 edition A2?

The on-line versions seem alright to me - I've attached zipped samples [not

reproduced, but showing the railway line at both 1:25000 and 1:50000 scale].



Steve Harris

____________ _________ _________ _________ _________ _________ _



Very interesting. My paper copies of LR124 and OL18 show a noticeable lack of

the new harbour branch line (or main line as we should call it) from Pen Y Mount

to Spooner's Bar [at Harbour Station]. I've just looked at the OS GetaMap and

lo! there it is!



This is very important for OS fans, as it's the first example I've seen of an

on-line version containing new detail not seen on the current paper edition.

I've got to think about this.....



I've copied this email to my friend Bill [and Richard Oliver] who will, I'm

sure, have some thoughts on the matter.



Don't go away



Lez

____________ _________ _________ _________ _________ _________ _



This is new to me! I don't know what OS's updating procedures are nowadays, but

it would not surprise me to learn that, instead of updating an area to fit in

with the publication/ reprint cycle of a particular sheet, i.e. in the few

months immediately before a new printing is scheduled, that instead they are

updating tiles as new information becomes available. This would bring

small-scale revision into line with what is now well-established digital

large-scale practice. It might also nudge some people away from buying the

standard published maps and into OS Select!



Best wishes,



Richard

____________ _________ _________ _________ _________ _________ _



The plot is certainly thickening. I wonder if we're heading for the editionless

edition?!



Lez

____________ _________ _________ _________ _________ _________ _



Thanks. We effectively have 'editionless editions' with the large-scale digital

stuff already, where just an annual updated version of the whole database is

supplied to the legal deposit libraries!



Richard

____________ _________ _________ _________ _________ _________ _



The example here in Porthmadog give an on-line publication date a good six

months ahead of the paper version. Are there any more examples out there?

































[Non-text portions of this message have been removed]

The information age really has caught up with OS hasn't it!







To ensure that any paper copies of online material accurately reflect the

situation on the ground at the date of survey I think this should be

published as well as the edition date.







I have done quite a bit of work with early 20th century 1:2500 plans where

the date of survey is some 9 months earlier than the edition date and

railway historians in particular have cited OS edition dates as evidence of

a railway not being in use whereas it was in fact open by the time of

publication but 'under construction' at the time of survey. This 'correction

factor' needs to be applied to all Popular Edition, Seventh Series and early

Landranger maps







I purchase digital data from OS in preparing Land Registry submissions and

have to presume that the data is up to date within a year or so in the case

of new buildings but there is no indication of the date or source of other

detail. I suspect some detail such as field boundaries is still as plotted

during the reconstitution of County series plans with only visual

corrections from air photos.







I would be very interested to know how accurate various elements of detail

are would welcome an explanation of the significance of the different layers

on the plans when supplied as .DWG files







  John Hobden







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Version: 8.5.375 / Virus Database: 270.13.7/2222 - Release Date: 07/09/09

05:55:00









[Non-text portions of this message have been removed]