[mapserver-users] convert projection from UTM to WGS84 using proj

Murat Beyhan beyhan at deprem.gov.tr
Mon May 21 03:57:53 EDT 2012


Hi,

is cs2cs a tool for converting shape data and 
are there any example for this purpose
actually I added +x_0=500000. to ogr2ogr command but doesn't cahaged the
result :(


On Fri, 2012-05-18 at 14:00 +0200, Jørn Vegard Røsnes wrote:
> Hi,
> 
> I lost your previous email, so this is just by memory.
> I'm not an projection expert, but here we go :-)
> 
> Regarding 3dg offset:
> In your .prj file there is an false easting=500000, so maybe it helps adding +x_0=500000.
> http://proj.maptools.org/gen_parms.html
> Se also +towgs84 in the same link and .prj file, and adjust accordingly.
> 
> Maybe a shot in the dark because 3dg = 333958,33m (40 075,017km / 360dg).
> I think you're near the solution.
> 
> See also
> http://spatialreference.org/
> http://spatialreference.org/ref/epsg/4230/
> 
> kind regards
> Jørn-Vegard Røsnes
> 
> ----- Original Message -----
> > From: "Jørn Vegard Røsnes" <jorn at spacetec.no>
> > To: "Murat Beyhan" <beyhan at deprem.gov.tr>
> > Cc: "mapserver-users" <mapserver-users at lists.osgeo.org>
> > Sent: Wednesday, 16 May, 2012 11:21:22 AM
> > Subject: Re: [mapserver-users] convert projection from UTM to WGS84 using proj
> >
> > Hi,
> > maybe something like this:
> >
> > ogr2ogr -s_srs epsg:4230 -t_srs epsg:4326  <dest shapefile> <source
> > shapefile>
> >
> > http://www.gdal.org/ogr2ogr.html
> >
> > kind regards
> > Jørn-Vegard Røsnes
> >
> > ----- Original Message -----
> > > From: "Murat Beyhan" <beyhan at deprem.gov.tr>
> > > To: "mapserver-users" <mapserver-users at lists.osgeo.org>
> > > Sent: Wednesday, 16 May, 2012 10:41:39 AM
> > > Subject: [mapserver-users] convert projection from UTM to WGS84
> > > using proj
> > >
> > > Dear friends,
> > > I'm sorry, I'm not good at GIS applications but I wondering about
> > > conversion between various projection or datum of the data files.
> > >
> > > data.shp data.shx data.dbf and data.prj files are available.
> > >
> > > shpdump data.shp gives following
> > >
> > > Shape:0 (ArcZ)  nVertices=4, nParts=1
> > >   Bounds:(  513275.786, 4006041.761, 0, 0)
> > >       to (  513345.812, 4006078.182, 0, 0)
> > >      (  513275.786, 4006078.182, 0, 0) Ring
> > >      (  513301.130, 4006064.906, 0, 0)
> > >      (  513321.636, 4006053.249, 0, 0)
> > >      (  513345.812, 4006041.761, 0, 0)
> > > ...
> > >
> > >
> > >
> > >
> > >
> > > data.prj as follows
> > >
> > > PROJCS["(UTM)Universal Transvers Merkator 3�",GEOGCS["EUROPEAN
> > > 1950",DATUM["European_Datum_1950",SPHEROID["International",6378388.00000000,297.00000000],
> > > TOWGS84[-87.00000000,-98.00000000,-121.00000000,0.00000000,0.00000000,0.00000000,0.00000000]],
> > > PRIMEM["Greenwich",0.00000000],UNIT["Degree",0.01745329],AUTHORITY["EPSG","4230"]],PROJECTION["TRANSVERSE_MERCATOR"],
> > > PARAMETER["SCALE_FACTOR",1.00000000],PARAMETER["CENTRAL_MERIDIAN",36.00000000],PARAMETER["LATITUDE_OF_ORIGIN",0.00000000],
> > > PARAMETER["FALSE_EASTING",500000.00000000],PARAMETER["FALSE_NORTHING",0.00000000],UNIT["meter",1.00000000]]
> > >
> > >
> > > using these data How to convert a file which is created using
> > > european_datum_1950 to WGS84 (World Geodetic System 1984)
> > > or where I have to start to understand these method of applications
> > > using PROJ4.
> > > Thanks
> > > muratB
> > >
> > >
> > > --
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> > >
> >
> 
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Murat BEYHAN 

Jeofizik Y.Müh.
T.C. Başbakanlık
Afet ve Acil Durum Yönetimi Başkanlığı
Deprem Dairesi Başkanlığı
Eskişehir Yolu 12. Km.
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Tel: 312 2872680-1556
email:beyhan at deprem.gov.tr




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