In message , at
12:42:33 on Fri, 14 Feb 2014, gordonT remarked:

(we've got Google maps and ultrasound detectors - what could go wrong?)

The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf
--
Roland Perry

On Sat, 15 Feb 2014 09:18:43 +0000, Roland Perry
wrote:

In message , at
12:42:33 on Fri, 14 Feb 2014, gordonT remarked:

(we've got Google maps and ultrasound detectors - what could go wrong?)

The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

Guy Gorton

"Guy Gorton" wrote in message
...
On Sat, 15 Feb 2014 09:18:43 +0000, Roland Perry
wrote:
The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.


If you switch off the 'Public Transport' option it looks sensible. It looks
to me like the coloured 'public transport' lines are only there in order to
provide the routeing engine with something to use when you ask for a route
on public transport.

--
DAS

In message , at 18:40:46 on Sat, 15 Feb
2014, D A Stocks remarked:
The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

If you switch off the 'Public Transport' option it looks sensible. It
looks to me like the coloured 'public transport' lines are only there
in order to provide the routeing engine with something to use when you
ask for a route on public transport.

Yes, but you look at the RAIB report it shows the Northern northwest of
Old Street as an example where the "Google track" differs from the real
one, with the implication that some builders will be using Google maps
to work out if their site is over a railway line.

(Not helped by the Angel station entrance being some way to the north of
the actual station).

And of course the Waterloo and City is shown as a straight line, rather
than the S-bend that it really is.
--
Roland Perry

On Sat, 15 Feb 2014 20:02:55 +0000, Roland Perry
wrote:

In message , at 18:40:46 on Sat, 15 Feb
2014, D A Stocks remarked:
The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

If that looks bad then move over to Finchley Road station and see what
they've done to the Met.

If you switch off the 'Public Transport' option it looks sensible. It
looks to me like the coloured 'public transport' lines are only there
in order to provide the routeing engine with something to use when you
ask for a route on public transport.

Yes, but you look at the RAIB report it shows the Northern northwest of
Old Street as an example where the "Google track" differs from the real
one, with the implication that some builders will be using Google maps
to work out if their site is over a railway line.

(Not helped by the Angel station entrance being some way to the north of
the actual station).

And of course the Waterloo and City is shown as a straight line, rather
than the S-bend that it really is.

In article ,
(Guy Gorton) wrote:

On Sat, 15 Feb 2014 09:18:43 +0000, Roland Perry
wrote:

In message , at
12:42:33 on Fri, 14 Feb 2014, gordonT remarked:

(we've got Google maps and ultrasound detectors - what could go wrong?)

The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

The lines on the base map look pretty clear to me, leaving the designers
even less excuse for the rubbish lines they have drawn. It's a bit of a
miracle they got the stations in the right places.

--
Colin Rosenstiel

In message , at 13:27:46
on Sat, 15 Feb 2014, remarked:
A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

The lines on the base map look pretty clear to me, leaving the designers
even less excuse for the rubbish lines they have drawn.

The designers didn't draw the lines, their "join the dots" software did.
--
Roland Perry

In article , (Roland Perry)
wrote:

In message , at
13:27:46 on Sat, 15 Feb 2014, remarked:
A quick look at Google maps ought to make this more obvious, rather
than less, for example here at Ealing Broadway (the District being the
most egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines. It is even worse south of Acton Town.

The lines on the base map look pretty clear to me, leaving the designers
even less excuse for the rubbish lines they have drawn.

The designers didn't draw the lines, their "join the dots" software
did.

Hard to believe that given the routes chosen.

--
Colin Rosenstiel

wrote in message
...
In article , (Roland
Perry)
wrote:

The lines on the base map look pretty clear to me, leaving the designers
even less excuse for the rubbish lines they have drawn.

The designers didn't draw the lines, their "join the dots" software
did.

Hard to believe that given the routes chosen.


The presence of a line on the base map doesn't mean there is a passenger
service, and on it's own can't be used for a journey planner. Google don't
have access to timetable or detailed mapping data for the Undergound so they
have created an overlay that connects the stations for journey planning
purposes. It fits that purpose very well. This is very evident between
Richmond and Gunnersbury, where the Overground follows the line on the base
map but the Underground doesn't.

What are you finding so hard to believe?

--
DAS

In message , at 14:01:13 on
Sat, 15 Feb 2014, Guy Gorton remarked:
(we've got Google maps and ultrasound detectors - what could go wrong?)

The [lack of] correspondence between various mapping efforts, and where
tube lines actually are, has been discussed quite frequently (on u.t.l
at least). Even when such a maps claims to be geographical, it often
merely relies on "joining the dots" (ie the stations).

A quick look at Google maps ought to make this more obvious, rather than
less, for example here at Ealing Broadway (the District being the most
egregiously wrong): http://goo.gl/maps/xDyNf

Curiosly the Google map does show, as faint lines, the real routes of
the lines.

Yes, that's the point. You can actually see how far the real lines
diverge from the join-the-dots lines.

It is even worse south of Acton Town.

The District Line approaching Ealing Broadway is the worst. And it's
very easy to spot when checking out any "geographical" maps.

Acton Town to Turnham Green (Piccadilly) is pretty too bad though.
--
Roland Perry