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

Mon May 21 04:53:49 EDT 2012

Hi,
cs2cs is a part of proj
http://trac.osgeo.org/proj/
Transforms from one projection to another.

I think it's just a matter of getting the projection parameters right.
Maybe this tool can help you, I just googled it (via http://gis.stackexchange.com/questions/7608/shapefile-prj-to-postgis-srid-lookup-table):
http://prj2epsg.org/search

kind regards
Jørn-Vegard Røsnes

----- Original Message -----
> From: "Murat Beyhan" <beyhan at deprem.gov.tr>
> To: "Jørn Vegard Røsnes" <jorn at spacetec.no>
> Cc: "mapserver-users" <mapserver-users at lists.osgeo.org>
> Sent: Monday, 21 May, 2012 9:57:53 AM
> Subject: Re: [mapserver-users] convert projection from UTM to WGS84 using proj
> 
> 
> 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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> > > >
> > >
> > 
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> 
> 
> Murat BEYHAN
> 
> Jeofizik Y.Müh.
> T.C. Başbakanlık
> Afet ve Acil Durum Yönetimi Başkanlığı
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> 
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CONFIDENTIALITY
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