Re: [OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-22 Thread Tim Waters (chippy)
This website may help?

http://spatialreference.org/ref/epsg/?search=Pulkovo

Tim

On Thu, Nov 20, 2008 at 8:32 PM, Gustav Foseid [EMAIL PROTECTED] wrote:
 I got the official coordinates for all the border stones and markers along
 the Norwegian-Russian border. The points are taken from the official
 protocol, and are in Pulkovo 1932 coordinate system.

 Does anyone have experience in working with this coordinate system or know
 how to transform the values to WGS84?

 The file is available from
 http://www.foseid.priv.no/gustav/2008/osm/Russkoor.xls, but all comments are
 in Norwegian only.


  - Gustav

 ___
 talk mailing list
 talk@openstreetmap.org
 http://lists.openstreetmap.org/listinfo/talk



___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-22 Thread Gustav Foseid
On Sat, Nov 22, 2008 at 9:13 PM, Tim Waters (chippy)
[EMAIL PROTECTED]wrote:

 This website may help?

 http://spatialreference.org/ref/epsg/?search=Pulkovo


Thank you for the link.

It seems Pulkovo 1942 variants are much more used, than 1932. The main
difference seems to be that they changed from Bessel spheroid to to
Krassowsky.

Anyway, the file contains a number of coordinates given in Pulkovo 1932
(zone 5 and 6) as well as UTM89. Bernt found that these coordinates are
enough to get a good approximation using linear regression. The border is
going to be resurveyed next year, and hopefully a more modern daum will be
used.

I will post a link to the border as soon as I am done processing the
numbers.


Regards,

Gustav
___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-21 Thread Erik Johansson
On Thu, Nov 20, 2008 at 9:32 PM, Gustav Foseid [EMAIL PROTECTED] wrote:
 I got the official coordinates for all the border stones and markers along
 the Norwegian-Russian border. The points are taken from the official
 protocol, and are in Pulkovo 1932 coordinate system.

 Does anyone have experience in working with this coordinate system or know
 how to transform the values to WGS84?

 The file is available from
 http://www.foseid.priv.no/gustav/2008/osm/Russkoor.xls, but all comments are
 in Norwegian only.


Oooh projection archeology, it's even more fun when you go down to
local county databases they all have their own projections scheme for
better fit to the grid. Reading in Proj4 projection definitions file
there seems to be many pulkovo zones in 1995, maybe the same is true
for 1932? Calling up your local university  GIS department they are
usually very glad to help.. :-) You can also ask the OSM Russians:

http://forum.openstreetmap.org/viewforum.php?id=21


/Emj

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-21 Thread Tom Hughes
Erik Johansson wrote:

 Oooh projection archeology, it's even more fun when you go down to
 local county databases they all have their own projections scheme for
 better fit to the grid. Reading in Proj4 projection definitions file
 there seems to be many pulkovo zones in 1995, maybe the same is true
 for 1932? Calling up your local university  GIS department they are
 usually very glad to help.. :-) You can also ask the OSM Russians:

This article may be of some help:

   http://www.asprs.org/resources/grids/09-2002-latvia.pdf

The final paragraph gives a translation from Pulkovo 1932 to UTM by
the looks of it.

Tom

-- 
Tom Hughes ([EMAIL PROTECTED])
http://www.compton.nu/

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


Re: [OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-21 Thread Bernt M. Johnsen
Well, that article defines on how to transform from DHG (Deutches
Heeres Gitter) Plukovo 1932 to UTM ED50 in zone 34, and that's a
start. Question is, is that (DHG Pulkovo 1932) the same as the
coordinates we have for the border which is described like this:
Koordinatene er konforme , rettvinklete Gauss-Krugerske, etter
Pulkovasystemet av 1932 (Bessels ellipsoide).?

Which should translate to something like The Coordinates are conform,
orthogonal Gauss-Krugerian, after the Pulkova System of 1932 (Bessel's
ellipsoid)

More details in Norwegian in the referenced document ;-)


2008/11/21 Tom Hughes [EMAIL PROTECTED]:
 Erik Johansson wrote:

 Oooh projection archeology, it's even more fun when you go down to
 local county databases they all have their own projections scheme for
 better fit to the grid. Reading in Proj4 projection definitions file
 there seems to be many pulkovo zones in 1995, maybe the same is true
 for 1932? Calling up your local university  GIS department they are
 usually very glad to help.. :-) You can also ask the OSM Russians:

 This article may be of some help:

   http://www.asprs.org/resources/grids/09-2002-latvia.pdf

 The final paragraph gives a translation from Pulkovo 1932 to UTM by
 the looks of it.

 Tom

 --
 Tom Hughes ([EMAIL PROTECTED])
 http://www.compton.nu/

 ___
 talk mailing list
 talk@openstreetmap.org
 http://lists.openstreetmap.org/listinfo/talk




-- 
Bernt Marius Johnsen

___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk


[OSM-talk] Anyone familiar with Pulkova 1932 coordinates?

2008-11-20 Thread Gustav Foseid
I got the official coordinates for all the border stones and markers along
the Norwegian-Russian border. The points are taken from the official
protocol, and are in Pulkovo 1932 coordinate system.

Does anyone have experience in working with this coordinate system or know
how to transform the values to WGS84?

The file is available from
http://www.foseid.priv.no/gustav/2008/osm/Russkoor.xls, but all comments are
in Norwegian only.


 - Gustav
___
talk mailing list
talk@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk