<font color="#000066"><font face="verdana,sans-serif">Hi,<br><br>Thanks for the answers!<br>I'll gather all the information and I'll try to adapt to my problem.<br>I'll post more information about the problem when I get some results or when I get more information.<br>
Thank you very much for the help!<br clear="all"></font></font><br>Daiane Fraga<br><br><br>
<br><br><div class="gmail_quote">---------------------------------------------<br>From: <b class="gmail_sendername">Jan Hartmann</b> <span dir="ltr"><<a href="mailto:j.l.h.hartmann@uva.nl">j.l.h.hartmann@uva.nl</a>></span><br>
Date: 2010/11/16<br>Subject: Re: [mapserver-users] Gauss-Krüger<br>To: Daiane Fraga <<a href="mailto:daiane.a.fraga@gmail.com">daiane.a.fraga@gmail.com</a>><br>Cc: Fuchs Juan Carlos <<a href="mailto:jfuch@indec.mecon.gov.ar">jfuch@indec.mecon.gov.ar</a>>, <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
<br><br>
<div text="#000000" bgcolor="#ffffff">
<font face="Times New Roman, Times, serif">If your map is from 1908,
there is a change that its projection is not in the official
modern EPSG table. In that case you need to derive the whole PROJ4
definition from the legend of the map. As a rule, this is not
difficult, as the theoretical definitions of the common projection
have been known for a long time, it's just a matter of discovering
which particular set of parameters has been chosen for this map.
In my experience with old Dutch maps the main difficulty is
finding out which ellipsoid has been used. In your case, a map of
1908 can in no way have had a WGS84 datum. You probably have to
project it to a modern projection with the original ellipsoid, and
from that to WGS84.<br>
<br>
Can you give any details of the maps you are working with and
whether their legends say something said about the projection? Are
they part of a larger map series?<br>
<br>
Jan </font><br><div><div></div><div class="h5">
<br>
On 11/16/10 12:02, Daiane Fraga wrote:
</div></div><blockquote type="cite"><div><div></div><div class="h5"><font color="#000066"><font face="verdana,sans-serif">Hi,<br>
<br>
</font></font><span lang="en"><span title="">I understand what you say. </span><span title="">But this is not my question. </span><span title="">I'm with a map in a coordinate system
outdated (the maps are dated from 1908). </span><span title="">And I'm using an application that interacts
with Google Maps, which has caused problems. </span><span title="">Did you know how to do some kind of
conversion from the Mapserver?<br>
</span><span title="">We can do a conversion to the WGS
1984, but it has to be done manually for each map.</span></span><br>
I'm not sure that may maps have <span lang="en"><span title="">a known</span></span>
Mapserver projection. <br clear="all">
<br>
I'm using this:<br>
PROJECTION<br>
"init=epsg:26915"<br>
"proj=latlong"<br>
"ellps=WGS84"<br>
"datum=WGS84"<br>
END<br>
<br>
<br>
Thanks!<br>
<br>
Daiane Fraga<br>
<br>
<br>
<br>
<br>
<div class="gmail_quote">---------- Forwarded message ----------<br>
From: <b class="gmail_sendername">Fuchs Juan Carlos</b> <span dir="ltr"><<a href="mailto:jfuch@indec.mecon.gov.ar" target="_blank">jfuch@indec.mecon.gov.ar</a>></span><br>
Date: 2010/11/12<br>
Subject: RE: [mapserver-users] Gauss-Krüger<br>
To: Daiane Fraga <<a href="mailto:daiane.a.fraga@gmail.com" target="_blank">daiane.a.fraga@gmail.com</a>><br>
<br>
<br>
<div>
<div><span><font size="2" color="#0000ff" face="Arial">Hi
Daiane</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">You
have to find in Prij.4 the right EPSG code for your maps</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">in wich
country / region are you interested?</font></span></div>
<div><span></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">yust to
sart with ...</font></span></div>
<div><span></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">in the
.map you have to insert two groups of code</font></span></div>
<div><span></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">in the
header (first zone) goes the poyection of the map you
are producing</font></span></div>
<div><span>PROJECTION<br>
"init=epsg:heregoesyourcode" <br>
END</span></div>
<div><span></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">for
each Layer you call to build the map</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">Layer</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">....</font></span></div>
<div><span>PROJECTION <br>
"init=epsg:heregoesyourcodeof thesourcelayer"<br>
END</span></div>
<div><span><font size="2" color="#0000ff" face="Arial">....</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">end</font></span></div>
<div><span></span> </div>
<div><span><font size="2" color="#0000ff" face="Arial">hope it
help someway</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">Cheers</font></span></div>
<div><span><font size="2" color="#0000ff" face="Arial">JC</font></span></div>
<div> </div>
<blockquote>
<div dir="ltr" align="left"><font size="2" face="Tahoma">-----Mensaje
original-----<br>
<b>De:</b> Daiane Fraga [mailto:<a href="mailto:daiane.a.fraga@gmail.com" target="_blank">daiane.a.fraga@gmail.com</a>]<br>
<b>Enviado el:</b> Viernes, 12 de Noviembre de 2010
12:03 p.m.<br>
<b>Para:</b> <a href="mailto:mapserver-users@lists.osgeo.org" target="_blank">mapserver-users@lists.osgeo.org</a><br>
<b>Asunto:</b> [mapserver-users] Gauss-Krüger<br>
<br>
</font></div>
<font color="#000066"><font face="verdana,sans-serif">Hello,<br>
<br>
Did someone have any problems using Mapserver with
Gauss-Krüger?<br>
I know that Mapserver is compatible with proj.4 library
and the proj.4 library supports Gauss-Krüger. But I dont
know how to use it. <br>
Somebody could help me?<br clear="all">
</font></font><br>
Thanks.<br>
<br>
Daiane<br>
<br>
<br>
</blockquote>
</div>
</div>
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