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<font face="Arial">Hello, i downloaded a 10GB raw image from Nasa Earth

Observatory - Blue Marble

(<a class="moz-txt-link-freetext" href="http://earthobservatory.nasa.gov/Newsroom/BlueMarble/">http://earthobservatory.nasa.gov/Newsroom/BlueMarble/</a>)<br>

<br>

It is a world image at 500m/pixel resolution in raw rgb format,

86400x42600 pixels.<br>

<br>

I want to use it with mapserver, and have created a gdal VRT file:<br>

<br>

<font face="Courier New">&lt;VRTDataset rasterXSize="86400"

rasterYSize="42600"&gt;<br>

</font><font color="#ff0000" face="Courier New">&lt;SRS&gt;&lt;/SRS&gt;<br>

&lt;GeoTransform&gt;&lt;/GeoTransform&gt;<br>

</font><font face="Courier New">&nbsp; &lt;VRTRasterBand dataType="Byte"

band="1" subClass="VRTRawRasterBand"&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ColorInterp&gt;Red&lt;/ColorInterp&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;SourceFilename

relativetoVRT="1"&gt;world.topo.bathy.200407.3x86400x43200.bin&lt;/SourceFilename&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ImageOffset&gt;0&lt;/ImageOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;PixelOffset&gt;3&lt;/PixelOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;LineOffset&gt;259200&lt;/LineOffset&gt;<br>

&nbsp; &lt;/VRTRasterBand&gt;<br>

&nbsp; &lt;VRTRasterBand dataType="Byte" band="2"

subClass="VRTRawRasterBand"&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ColorInterp&gt;Green&lt;/ColorInterp&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;SourceFilename

relativetoVRT="1"&gt;world.topo.bathy.200407.3x86400x43200.bin&lt;/SourceFilename&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ImageOffset&gt;1&lt;/ImageOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;PixelOffset&gt;3&lt;/PixelOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;LineOffset&gt;259200&lt;/LineOffset&gt;<br>

&nbsp; &lt;/VRTRasterBand&gt;<br>

&nbsp; &lt;VRTRasterBand dataType="Byte" band="3"

subClass="VRTRawRasterBand"&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ColorInterp&gt;Blue&lt;/ColorInterp&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;SourceFilename

relativetoVRT="1"&gt;world.topo.bathy.200407.3x86400x43200.bin&lt;/SourceFilename&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;ImageOffset&gt;2&lt;/ImageOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;PixelOffset&gt;3&lt;/PixelOffset&gt;<br>

&nbsp;&nbsp;&nbsp; &lt;LineOffset&gt;259200&lt;/LineOffset&gt;<br>

&nbsp; &lt;/VRTRasterBand&gt;<br>

&lt;/VRTDataset&gt;</font><br>

<br>

I still need to georeference the image. How can i fill the SRS and

GeoTransform labels?<br>

<br>

Also, is there some tool to convert this too big file into a tile of

smaller files?<br>

<br>

thanks for your help,<br>

<br>

Paco Regod&oacute;n<br>

<br>

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