[Fwd: Re: [Gvsig_english] Coordinate Transformations]

[Antonio Gennarini]

Apologies, 

This wasn't meant to be sent here.

Antonio 

-----Original Message-----
From: Antonio Gennarini [mailto:antoniogennarini at geotux.it] 
Sent: 26 November 2008 08:46
To: Antonio Gennarini
Subject: [Fwd: Re: [Gvsig_english] Coordinate Transformations]


-
-------------------------------------
      Antonio Gennarini
   (Project Hydrogeologist)
-------------------------------------
ESI Ltd
Soil and Groundwater Specialists
New Zealand House
160, Abbey Foregate
Shrewsbury SY2 6FD
United Kingdom
Telephone: +44 (0)1743 276100 Direct Dial: +44 (0)1743 276145
Fax: +44 (0)1743 248600
Email antoniogennarini at esinternational.com
<http://www.esinternational.com> 


------- Messaggio inoltrato -------
> Da: Victoria Agazzi <agazzi_vic at gva.es>
> A: antoniogennarini at gmail.com, Users and Developers mailing list 
> <gvsig_internacional at runas.cap.gva.es>
> Oggetto: Re: [Gvsig_english] Coordinate Transformations
> Data: Mon, 11 Aug 2008 10:29:07 +0200
> 
> Hi Antonio,
> if you are able to convert the *.gpx file to a *.shp file, then gvSIG 
> transform the CRS from EPSG: 4326 to various OSGB reference systems:
> 1. you will need to generate an shp file with your data (more than one 
> if you have points, tracks, routes and texts). You can do this with [1].
> These *.shp files will be in EPSG:4326.
> 2. With gvSIG you need to create a new View in the CRS OSGB. To do 
> this, create a new view, go to its Properties and select current projection.
> Search into the EPSG type, by name OSGB. Select one of them.
> I searched into the CRS manager and found  6  CRS  that are OSGB: 4 
> that are geographic, 1 projected and another one compound.
> 3. After that, you have to add your *.shp files which are in EPSG:4326. 
> Open the View, Add data icon,  and select  the files.  For each one, 
> you will have to change its CRS into 4326 (this is the way gvSIG 
> "knows" in which CRS is your data). Click the current projection 
> button, and look for the EPSG Type and 4326 code. Remember to define a 
> transformation (in the Selec transformation list) between both CRS 
> because they don`t have the same datum. You can select EPSG 
> transformations, and also you can define a manual one if you know the 
> parameters involved in your geographic area.
> 4. At this point you will have your data in the OSGB projection but 
> only in the actual view. Next step is to export the gvSIG layers into 
> your hard disc. To do this, go to Layer/Export to/SHP.
> 
> Regards,
> Viqui-.
> 
> [1] http://gpx2shp.sourceforge.jp/
> 
> 
> Antonio Gennarini escribió:
> > Hi.
> >
> > I'm in the process of learning howto deal with GPS data and have now 
> > the difficulty of transforming WGS84 coordinates in my *.gpx files 
> > to OSGB stored in a shapefile.
> >
> > ANybody now a relaxed way of doing this. I've been searching the web 
> > and have only found standalone applications that will allow me to 
> > convert the coordinates one by one and without reading directly from 
> > the gpx file.
> >
> >
> > Thanks in advance for your help.
> >
> > REgards
> > ANtonio
> >
> > _______________________________________________
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> > Gvsig_internacional at runas.cap.gva.es
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> >
> >
> >