I hate to sound pesemeistic, and may have missed somthing, but...
Do we have any gaurentee that this inacuracy isn't some messed up copy
protection/obfucation/deliberate error/easter egg thing introduced by OS? I
know they shouldn't have, but they are a relitivly clumsy organisation, and
I'm sure
On Sunday 30 May 2010 12:16:33 Tim François wrote:
> By the way, which method are people using to re-project the VectorDistrict
> data? I'm using the inbuilt datum in gdal - is anyone using the correct
> *.prj file, and is there a difference?
I'm using vectormap in Merkaartor from Git with the ori
Funny this subject should come up.
Working with the OS Locator data, I'm finding the bounding boxes to be
constantly about 50m to the east. In the south, they're also about 30m south.
In scotland they're about 10m north.
I'm using the srid transform 27700 -> 4326.
What am I doing wrong?
robe
From: "Chris Hill"
Sent: Sunday, May 30, 2010 11:53 AM
> I believe the StreetView tiles are offset south(ish) by a few metres in
> East Yorkshire too. Reprojected shape files line up well with surveyed
> data. I have traced a few buildings from StreetView but I've stopped
> until I had worked out
So... I take that to mean that I should really be using the correct *.prj
file, rather than gdal's inbuilt datum?
Tim
--- On Sun, 30/5/10, Jerry Clough - OSM wrote:
From: Jerry Clough - OSM
Subject: Re: [Talk-GB] Offsets between OS and OSM data (was Building with
mapseg)
To: ta
ris Hill wrote:
>From: Chris Hill
>Subject: Re: [Talk-GB] Offsets between OS and OSM data (was Building with
>mapseg)
>To: Talk-GB@openstreetmap.org
>Date: Sunday, 30 May, 2010, 11:53
>
>
>I believe the StreetView tiles are offset south(ish) by a few metres in
>East York
By the way, which method are people using to re-project the VectorDistrict
data? I'm using the inbuilt datum in gdal - is anyone using the correct *.prj
file, and is there a difference?
Tim
--- On Sun, 30/5/10, Chris Hill wrote:
From: Chris Hill
Subject: Re: [Talk-GB] Offsets between O
I believe the StreetView tiles are offset south(ish) by a few metres in
East Yorkshire too. Reprojected shape files line up well with surveyed
data. I have traced a few buildings from StreetView but I've stopped
until I had worked out what was wrong. Now given other people's comments
I do think
I'm in London and using the method, linked to by Kevin, the VectorDistrict
looks very good. I also converted to kml to see how some some of the old
docks near sea level matched up in google earth and I was more than happy.
Overlaying Vector District and 'StreetView tiles' in Josm indicates the
Stre
I'm in Devon and I see the same thing although whether it is just the SW I
don't know.
The Streetview tiles (as I see them in JOSM) are all offset to the SE by
5-10 metres. I've converted some woods in my area from the VectorDistrict
data using this process,
http://wiki.openstreetmap.org/wiki
> On a side note, has anybody noticed a consistent tendency
> for existing
> independently surveyed roads to be offset northwards (by
> around 5-10
> metres) from the OS data (vectormap and streetview)? I've
> seen various
> cases of existing roads being edited to be consistent with
> OS data,
> bu
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