On Fri, 29 Oct 2004, Roland Perry wrote:

In message ,
at 20:28:53 on Thu, 28 Oct 2004, Tom Anderson
remarked:

But how do you know whether a map is accurate? That you can evaluate
them implies that you have some sort of authoritative source of
knowledge about the routes - which is what i'm after!

Maps like that have to be pieced together from a wide range of sources.

That's what i was afraid of. The 'map' i'm after only exists inside the
minds of a few people who've spent years accumulating tube lore.

For example, the W&C map I posted a link to. An earlier in the year
there was a long discussion about the approaches to Morden (another
place where there's been a "joining the dots" rather than accurately
depicting the route). I've got some other original maps of the Northern
as it crosses the Thames. Others have spoken of the Piccadilly near
South Ken, and the Jubilee north of Baker St being formerly Bakerloo
makes the right-angle crossing shown rather implausible. I don't see a
huge bend at Bank-Central, which one observes when on the train. And so
on. Lots of little things to put together, each of which will improve
one small part.

I see. I suppose i'll just have to keep reading and learning.

Perhaps if someone comes along and offers me a sabbatical (do grad
students get sabbaticals?), i'll take a year off to collate and digitise
every scrap of information available, then put together a definitive map.
Or persuade some geography student that it would make a good dissertation
project!

tom

--
.... to build a space elevator, that's got to be hundreds of thousands of
pounds ... -- Mike Froggatt

In message , at 11:16:39 on Thu, 28 Oct
2004, Paul Terry remarked:
There is the map at the end of ...

http://www.londontransport.co.uk/tfl.../marketone.pdf

... it is not wonderfully detailed, but it does show that crossing
point south of Green Lanes.

Hmm, it seems to suffer from the classic "join the dots" syndrome.

Look at the Waterloo and City for example. That's shown as just a single
arc, whereas we know it really looks like:

http://www.perry.co.uk/maps/wc_c1895.gif

So while it may be quite accurate in places, there are several I can see
that are wrong.
--
Roland Perry

"Paul Terry" wrote in message
...
In message ,
Tom Anderson writes

We had a very brief argument about this a month or so ago; Barry Salter
said they did, i said they didn't, and Clive threatened to excavate as
much of north London as was necessary to find out.
This is not an authoritative answer, but i did finally notice that
according to Quail, they do cross, and the crossing is indeed a little
way
south of Harringay Green Lanes; probably too far to build a station with
interchange, though.
On a more general note, how can one go about getting accurate information
about the routes of underground railways? Are there some sort of official
maps somewhere?

There is the map at the end of ...
http://www.londontransport.co.uk/tfl.../marketone.pdf
... it is not wonderfully detailed, but it does show that crossing point
south of Green Lanes.
Paul Terry

Anybody know how to extract the map from the end of the PDF document
marketone.pdf ? I have tried copying it from the main file but it loses
definition.
Cheerz,
Baz

Marratxi wrote:
"Paul Terry" wrote in message
...
In message
, Tom
Anderson writes

We had a very brief argument about this a month or so ago; Barry
Salter said they did, i said they didn't, and Clive threatened to
excavate as much of north London as was necessary to find out.
This is not an authoritative answer, but i did finally notice that
according to Quail, they do cross, and the crossing is indeed a
little way south of Harringay Green Lanes; probably too far to
build a station with interchange, though.
On a more general note, how can one go about getting accurate
information about the routes of underground railways? Are there
some sort of official maps somewhere?

There is the map at the end of ...
http://www.londontransport.co.uk/tfl.../marketone.pdf
... it is not wonderfully detailed, but it does show that crossing
point south of Green Lanes.
Paul Terry

Anybody know how to extract the map from the end of the PDF document
marketone.pdf ? I have tried copying it from the main file but it
loses definition.
Cheerz,
Baz

Some, mostly Adobe I suspect, photo/paint programmes allow conversion of a
pdf file to an image file.

Brimstone wrote:
Marratxi wrote:

"Paul Terry" wrote in message
...

In message
, Tom
Anderson writes


We had a very brief argument about this a month or so ago; Barry
Salter said they did, i said they didn't, and Clive threatened to
excavate as much of north London as was necessary to find out.
This is not an authoritative answer, but i did finally notice that
according to Quail, they do cross, and the crossing is indeed a
little way south of Harringay Green Lanes; probably too far to
build a station with interchange, though.
On a more general note, how can one go about getting accurate
information about the routes of underground railways? Are there
some sort of official maps somewhere?

There is the map at the end of ...
http://www.londontransport.co.uk/tfl.../marketone.pdf
... it is not wonderfully detailed, but it does show that crossing
point south of Green Lanes.
Paul Terry

Anybody know how to extract the map from the end of the PDF document
marketone.pdf ? I have tried copying it from the main file but it
loses definition.
Cheerz,
Baz


Some, mostly Adobe I suspect, photo/paint programmes allow conversion of a
pdf file to an image file.

I just tried Acrobat's "Extract Images" option on the file to try it
out, and all it extracted was the two blue images at the front and back
of the document - it didn't extract that map at all. You can see when
you zoom on it that's some kind of layered drawing - it's not an "image"
(in the JPG sense of the word) as far as I can tell.

What you can do though is extract just that one page and then save the
whole thing as a 1MB JPG, but I've just tried, and it loses most of the
quality when you zoom in. I suppose extracting it as an EPS might be
better, but it all depends what the OP wants to do with it.

In message , at 10:49:24 on Sat, 30
Oct 2004, Marratxi
remarked:
Anybody know how to extract the map from the end of the PDF document
marketone.pdf ? I have tried copying it from the main file but it loses
definition.

Needs to be kept as a .pdf, of course, otherwise much of the detail will
inevitably be lost.

There's a nag-ware utility called pdfedit995 which will do this.

http://www.software995.com/
--
Roland Perry

"Marratxi" wrote in message
...

Anybody know how to extract the map from the end of the PDF document
marketone.pdf ? I have tried copying it from the main file but it loses
definition.

Click on the snapshot tool, and then click on the graphic. It is then on the
clipboard. Press F4 when you have the graphic on screen for instructions.

Open a graphics programme and paste it in. If you do this with the complete
page, you will get poor definition. If you increase the size to 200% or
more, you will get a higher definition, but will have to copy in sections
and form a mosaic.
--
Terry Harper, Web Co-ordinator, The Omnibus Society
75th Anniversary 2004, see http://www.omnibussoc.org/75th.htm
E-mail:
URL: http://www.terry.harper.btinternet.co.uk/

In article , Terry Harper
wrote:
"Marratxi" wrote in
message ...

Anybody know how to extract the map from the end of the PDF
document marketone.pdf ? I have tried copying it from the main file
but it loses definition.

Click on the snapshot tool, and then click on the graphic. It is then
on the clipboard. Press F4 when you have the graphic on screen for
instructions.

Open a graphics programme and paste it in. If you do this with the
complete page, you will get poor definition. If you increase the size
to 200% or more, you will get a higher definition, but will have to
copy in sections and form a mosaic.

With the version of Adobe I use you can zoom after you select the area.
So, select the area you want, zoom it, then copy. Even if part of the
window is not visible you will get it all.

John

"John Haines" wrote in message
...
In article , Terry Harper
wrote:
"Marratxi" wrote in
message ...

Anybody know how to extract the map from the end of the PDF
document marketone.pdf ? I have tried copying it from the main file
but it loses definition.

Click on the snapshot tool, and then click on the graphic. It is then
on the clipboard. Press F4 when you have the graphic on screen for
instructions.

Open a graphics programme and paste it in. If you do this with the
complete page, you will get poor definition. If you increase the size
to 200% or more, you will get a higher definition, but will have to
copy in sections and form a mosaic.

With the version of Adobe I use you can zoom after you select the area.
So, select the area you want, zoom it, then copy. Even if part of the
window is not visible you will get it all.

John

I tried all those tricks before asking for help. It doesn't make a large
copy at all and if you try to enlarge it the definition is lousy. What I
really need is the map alone as a PDF file at 200% but without all the other
38 pages. The source file is almost 1Mb (marketone.pdf) at
http://www.londontransport.co.uk/tfl.../marketone.pdf
so if anybody can extract that page is pdf format or tell me how to do it I
shall be most grateful.
Thanks guys,
Baz

We had a very brief argument about this a month or so ago; Barry Salter
said they did, i said they didn't, and Clive threatened to excavate as
much of north London as was necessary to find out.

This is not an authoritative answer, but i did finally notice that
according to Quail, they do cross, and the crossing is indeed a little way
south of Harringay Green Lanes; probably too far to build a station with
interchange, though.

There is also the diagram of Finsbury Park station at
http://www.geocities.com/Athens/Acro.../ltfinpark.gif which shows
that north of the station the Victoria Line climbs over the Piccadilly Line
and so is on the west of it. Therefore if you accept the diagram is
accurate there has to be a crossing of the lines sooner or later.