<br><br><div class="gmail_quote">On Fri, Jan 20, 2012 at 11:51 AM, Fuchs Juan Carlos <span dir="ltr"><<a href="mailto:jfuch@indec.mecon.gov.ar">jfuch@indec.mecon.gov.ar</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">Hi Mr Frank Warmerdam<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">I sent out this post, but
no one answer, so I´m here, bothering you again.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">Any adwise would gratefull
received!<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">Happy New Year!<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">Juan Carlos Fuchs, from <u></u><u></u>Argentina<u></u><u></u>.</span></font></p></div></div></blockquote>
<div> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="ES"><div><p class="MsoNormal"><font><font face="Arial">...</font></font></p>
</div></div></blockquote><div> </div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div link="blue" vlink="purple" lang="ES"><div>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">This is the *.prj from the shp i have, and need to
bring along with the other one.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">PROJCS["lambert",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["False_Easting",10000000.0],PARAMETER["False_Northing",6391246.5],PARAMETER["Central_Meridian",-60.0],PARAMETER["Latitude_Of_Origin",-40.0],UNIT["Meter",1.0]]<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">that is my <font color="navy"><span style="color:navy">first</span></font>
try so far,: from my *.map file layer (Projection)<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
PROJECTION<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
"proj=laea"<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
"ellps=WGS84"<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
"lat_1=40"<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
"lon_0=-60"<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
"south"<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
END<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US"><br></span></font></p></div></div></blockquote><div>...<br> <br></div><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div link="blue" vlink="purple" lang="ES"><div><p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10pt;font-family:Arial;color:navy" lang="EN-US"></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US">As you can see it goes LL
EPSG:4326 in geographics (????) is there some doc I can read about the "towgs84"
Parameters, my guess is that they have not to be 0,0,0,0,0,0,0....<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial" color="navy"><span style="font-size:10.0pt;font-family:Arial;color:navy" lang="EN-US"></span></font><br></p></div></div></blockquote></div><br>Juan,<br><br>I do not believe the problem is related to the +towgs84 datum shifting. I<br>
believe the problem is that your LAEA projection definition for MapServer<br>lacks the false easting and northing values. Try something like:<br><br><br clear="all"><p class="MsoNormal"><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">
PROJECTION</span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US">
"+proj=laea +ellps=WGS84 +lat_1=40 +lon_0=-60 +south +x_0=</span></font><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US">10000000.0 +y_0=</span></font><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">6391246.5</span></font><font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US"></span></font><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US">"</span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US">END</span></font></p><p class="MsoNormal"><br><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US"></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial" lang="EN-US">The key change here being the addition of +x_0 and +y_0. I am not familiar with the</span></font></p><p class="MsoNormal">
<font face="Arial"><span style="font-size:10.0pt;font-family:Arial" lang="EN-US">+south parameter for LAEA though it might be appropriate. <br></span></font></p><br>By the way, you can use the new gdalsrsinfo utility to translate coordinate<br>
systems with GDAL. eg. <br><br>warmerdam@gdal:~$ gdalsrsinfo ESRI::'PROJCS["lambert",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Azimuthal_Equal_Area"],PARAMETER["False_Easting",10000000.0],PARAMETER["False_Northing",6391246.5],PARAMETER["Central_Meridian",-60.0],PARAMETER["Latitude_Of_Origin",-40.0],UNIT["Meter",1.0]]'<br>
<br>PROJ.4 : '+proj=laea +lat_0=-40 +lon_0=-60 +x_0=10000000 +y_0=6391246.5 +datum=WGS84 +units=m +no_defs '<br><br>OGC WKT :<br>PROJCS["lambert",<br> GEOGCS["GCS_WGS_1984",<br> DATUM["WGS_1984",<br>
SPHEROID["WGS_84",6378137.0,298.257223563]],<br> PRIMEM["Greenwich",0.0],<br> UNIT["Degree",0.0174532925199433]],<br> PROJECTION["Lambert_Azimuthal_Equal_Area"],<br>
PARAMETER["False_Easting",10000000.0],<br> PARAMETER["False_Northing",6391246.5],<br> PARAMETER["longitude_of_center",-60.0],<br> PARAMETER["latitude_of_center",-40.0],<br>
UNIT["Meter",1.0]]<br><br>Best regards,<br>-- <br>---------------------------------------+--------------------------------------<br>I set the clouds in motion - turn up | Frank Warmerdam, <a href="mailto:warmerdam@pobox.com" target="_blank">warmerdam@pobox.com</a><br>
light and sound - activate the windows | <a href="http://pobox.com/%7Ewarmerdam" target="_blank">http://pobox.com/~warmerdam</a><br>and watch the world go round - Rush | Geospatial Software Developer<br><br>