<div>Hello</div><div><br></div><div>I got a reply to my message stating that "<span class="Apple-style-span" style="border-collapse: collapse; font-family: arial, sans-serif; font-size: 13px; "> GDAL ignores a flag in the GEOTIF specification that says whether the coordinates are for the center or the lower-left of each pixel. "</span></div>
<div><span class="Apple-style-span" style="border-collapse: collapse; font-family: arial, sans-serif; font-size: 13px; ">Is this true? It's exacly what I am obtaining and what Markus Neteler explained me (about the useage of NN method)</span></div>
<div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;"><br></span></font></div><div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">Can anyone confirm me?</span></font></div>
<div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">Thanks</span></font></div><div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">Luisa</span></font></div>
<br><br><div class="gmail_quote">2011/3/25 Luisa Peña <span dir="ltr"><<a href="mailto:luisapena1979@gmail.com">luisapena1979@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Back again on this<div><br></div><div>I have talked with Markus Neteler and he told me that if I use gdalwarp with NN method, I will get a pixel shift and he suggested me to use bilinear method. The problem with bilinear is that my pixel values are changed (based on bilinear method)</div>
<div>So is there any method to keep the pixels values and without any pixel position shift?</div><div>Thanks</div><div><br>Best regards,</div><div>Luisa<div><div></div><div class="h5"><br><br><div class="gmail_quote">2011/3/23 Luisa Peña <span dir="ltr"><<a href="mailto:luisapena1979@gmail.com" target="_blank">luisapena1979@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="gmail_quote">For now GDAL15 (the one that comes with winGRASS GIS) and GDAL16 binary.</div>
<div class="gmail_quote">Why?</div></div><div class="gmail_quote">(I have sent this to the wrong mailing list)</div><div><div></div><div><div class="gmail_quote">
<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br><div>Why?<div><div></div><div><br><div><br><br><div class="gmail_quote">2011/3/22 Kyle Shannon <span dir="ltr"><<a href="mailto:ksshannon@gmail.com" target="_blank">ksshannon@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><font face="courier new,monospace">What version of gdal are you using?<br clear="all"></font><br># ============================<br>
Kyle Shannon<br>Physical Science Technician<br>RMRS Fire Sciences Lab<br>Fire, Fuels & Smoke - RWU 4405<br>
5775 Highway 10 W.<br>Missoula, MT 59808<br>(406)829-6954<br><a href="mailto:kshannon@fs.fed.us" target="_blank">kshannon@fs.fed.us</a><br># ============================<br>
<br><br><div class="gmail_quote"><div><div></div><div>On Tue, Mar 22, 2011 at 15:36, Luisa Peña <span dir="ltr"><<a href="mailto:luisapena1979@gmail.com" target="_blank">luisapena1979@gmail.com</a>></span> wrote:<br>
</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><div></div><div>
Greetings<div><br></div><div>I have sent an message a couple of days ago (<a href="http://lists.osgeo.org/pipermail/gdal-dev/2011-March/028124.html" target="_blank">http://lists.osgeo.org/pipermail/gdal-dev/2011-March/028124.html</a>) about this</div>
<div>I used gdalwarp with this formulation</div><div>gdalpwarp -t_srs <EPS<font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px">G> -tr 30 30 input.tif output.tif</span></font></div>
<div><font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px">Well it works fine but It seems to be with a deviation of half pixel on Latitude and half pixel on Longitude when compared with a similar operation in ARCGis</span></font></div>
<div><font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px"><br></span></font></div><div><font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px">Maybe I'm missing some parameter that might be relevant. Any suggestion?</span></font></div>
<div><font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px"><br>Thanks</span></font></div><div><font face="Geneva, Arial, Helvetica, sans-serif"><span style="font-size:14px">Luisa</span></font></div>
<br></div></div>_______________________________________________<br>
gdal-dev mailing list<br>
<a href="mailto:gdal-dev@lists.osgeo.org" target="_blank">gdal-dev@lists.osgeo.org</a><br>
<a href="http://lists.osgeo.org/mailman/listinfo/gdal-dev" target="_blank">http://lists.osgeo.org/mailman/listinfo/gdal-dev</a><br></blockquote></div><br>
</blockquote></div><br></div></div></div></div>
</blockquote></div><br>
</div></div></blockquote></div><br></div></div></div>
</blockquote></div><br>