[GRASS-dev] [bug #5396] (grass) hermannskogel datum parameters for Slovakia

this bug's URL: http://intevation.de/rt/webrt?serial_num=5396
-------------------------------------------------------------------------

Subject: hermannskogel datum parameters for Slovakia

Platform: GNU/Linux/x86
grass obtained from: Trento Italy site
grass binary for platform: Compiled from Sources

Hermannskogel datum parameters for Slovakia (Krovak projection) are wrong. The estimated error for these parameters is about 120-130 m.
Unless proper parameters are available I suggest to use parameters for Czech republic which give acceptable results with 1-3 meter error.
The item for Slovakia should be removed from menu and item for Czech republic (1.) could be extended to include also Slovakia.
The evaluation was done using local cartographic tools (Samuel for ArcView and Dattra).

-------------------------------------------- Managed by Request Tracker

Hi all,

after discussion in the CzechoSlovak mailing list I fixed this bug,
there is common geodetic datum for Czech Republic and Slovakia.

hermannskogel "towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56" "Czech
Republic/Slovakia" " "

Best, Martin

2006/12/18, Request Tracker <grass-bugs@intevation.de>:

this bug's URL: http://intevation.de/rt/webrt?serial_num=5396
-------------------------------------------------------------------------

Subject: hermannskogel datum parameters for Slovakia

Platform: GNU/Linux/x86
grass obtained from: Trento Italy site
grass binary for platform: Compiled from Sources

Hermannskogel datum parameters for Slovakia (Krovak projection) are wrong. The estimated error for these parameters is about 120-130 m.
Unless proper parameters are available I suggest to use parameters for Czech republic which give acceptable results with 1-3 meter error.
The item for Slovakia should be removed from menu and item for Czech republic (1.) could be extended to include also Slovakia.
The evaluation was done using local cartographic tools (Samuel for ArcView and Dattra).

-------------------------------------------- Managed by Request Tracker

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grass-dev@grass.itc.it
http://grass.itc.it/mailman/listinfo/grass-dev

--
Martin Landa <landa.martin@gmail.com> * http://gama.fsv.cvut.cz/~landa *

Hi Martin,

should this also go into 6.2-CVS?

Markus

On Tue, Dec 19, 2006 at 10:32:13AM +0100, Martin Landa wrote:

Hi all,

after discussion in the CzechoSlovak mailing list I fixed this bug,
there is common geodetic datum for Czech Republic and Slovakia.

hermannskogel "towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56" "Czech
Republic/Slovakia" " "

Best, Martin

2006/12/18, Request Tracker <grass-bugs@intevation.de>:
>this bug's URL: http://intevation.de/rt/webrt?serial_num=5396
>-------------------------------------------------------------------------
>
>Subject: hermannskogel datum parameters for Slovakia
>
>Platform: GNU/Linux/x86
>grass obtained from: Trento Italy site
>grass binary for platform: Compiled from Sources
>
>Hermannskogel datum parameters for Slovakia (Krovak projection) are wrong.
>The estimated error for these parameters is about 120-130 m.
>Unless proper parameters are available I suggest to use parameters for
>Czech republic which give acceptable results with 1-3 meter error.
>The item for Slovakia should be removed from menu and item for Czech
>republic (1.) could be extended to include also Slovakia.
>The evaluation was done using local cartographic tools (Samuel for ArcView
>and Dattra).
>
>
>-------------------------------------------- Managed by Request Tracker
>
>_______________________________________________
>grass-dev mailing list
>grass-dev@grass.itc.it
>http://grass.itc.it/mailman/listinfo/grass-dev
>

--
Martin Landa <landa.martin@gmail.com> * http://gama.fsv.cvut.cz/~landa *

_______________________________________________
grass-dev mailing list
grass-dev@grass.itc.it
http://grass.itc.it/mailman/listinfo/grass-dev

--
Markus Neteler <neteler itc it> http://mpa.itc.it/markus/
ITC-irst - Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18 - 38050 Povo (Trento), Italy

Hi Markus,

I think it should be also fixed in 6.2-CVS (maybe some of my Slovak
friends can confirm it;-)

Martin

2006/12/19, Markus Neteler <neteler@itc.it>:

Hi Martin,

should this also go into 6.2-CVS?

Markus

On Tue, Dec 19, 2006 at 10:32:13AM +0100, Martin Landa wrote:
> Hi all,
>
> after discussion in the CzechoSlovak mailing list I fixed this bug,
> there is common geodetic datum for Czech Republic and Slovakia.
>
> hermannskogel "towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56" "Czech
> Republic/Slovakia" " "
>
> Best, Martin
>
> 2006/12/18, Request Tracker <grass-bugs@intevation.de>:
> >this bug's URL: http://intevation.de/rt/webrt?serial_num=5396
> >-------------------------------------------------------------------------
> >
> >Subject: hermannskogel datum parameters for Slovakia
> >
> >Platform: GNU/Linux/x86
> >grass obtained from: Trento Italy site
> >grass binary for platform: Compiled from Sources
> >
> >Hermannskogel datum parameters for Slovakia (Krovak projection) are wrong.
> >The estimated error for these parameters is about 120-130 m.
> >Unless proper parameters are available I suggest to use parameters for
> >Czech republic which give acceptable results with 1-3 meter error.
> >The item for Slovakia should be removed from menu and item for Czech
> >republic (1.) could be extended to include also Slovakia.
> >The evaluation was done using local cartographic tools (Samuel for ArcView
> >and Dattra).
> >
> >-------------------------------------------- Managed by Request Tracker
> >
> >_______________________________________________
> >grass-dev mailing list
> >grass-dev@grass.itc.it
> >http://grass.itc.it/mailman/listinfo/grass-dev
> >
>
> --
> Martin Landa <landa.martin@gmail.com> * http://gama.fsv.cvut.cz/~landa *
>
> _______________________________________________
> grass-dev mailing list
> grass-dev@grass.itc.it
> http://grass.itc.it/mailman/listinfo/grass-dev

--
Markus Neteler <neteler itc it> http://mpa.itc.it/markus/
ITC-irst - Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18 - 38050 Povo (Trento), Italy

_______________________________________________
grass-dev mailing list
grass-dev@grass.itc.it
http://grass.itc.it/mailman/listinfo/grass-dev

--
Martin Landa <landa.martin@gmail.com> * http://gama.fsv.cvut.cz/~landa *