That is a good point. The 2 Gb limit is still a problem for file-based data in ArcGIS. Rudolf, is your file around 2 Gb?<br><br>Try exporting a small region. If that fails, can you post your failing file to the web where we can take a look at it?
<br><br>David<br><br><br><div><span class="gmail_quote">On 8/9/06, <b class="gmail_sendername">William Kyngesburye</b> <<a href="mailto:woklist@kyngchaos.com">woklist@kyngchaos.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Aug 9, 2006, at 4:51 AM, Rudolf Maurer wrote:<br><br>> Will try William and Macieks r.out.gdal suggestions, but did not do<br>> it yet.<br>> When I export TIF I am losing the height data, right?<br>><br>That's why you use the Int16 data type, so it can store the full
<br>range of elevations. So it only works for integer elevations.<br>Floats would need another method, like the ascii grid export from<br>GDAL. Or scaling the data up a number of decimal places so an<br>integer could be used.
<br><br>> I spotted an online document on SRTM-Data which mentioned the<br>> direct import of SRTM-Data using the Spatial Analyst extension.<br>> Do I need this for importing the GRASS-made Grid-Files, too?<br>>
<br>I don't think the Spatial Analyst extension has anything to do with<br>raster conversion, just extra analysis functions.<br><br>> 2006/8/8, David Finlayson < <a href="mailto:david.p.finlayson@gmail.com">david.p.finlayson@gmail.com
</a>>:<br>> I use r.our.arc frequenctly to transfer data between ArcGIS and<br>> GRASS. What exactly is the problem you are having?<br>><br><br>When I think back on it, I believe the reason I had no luck with<br>
ascii/arc grid export is that I needed to transfer HUGE rasters over<br>to Arc, and Arc choked on the multi-GB text files. I think an ascii<br>grid under 2GB could work. There's a lot of expansion in a text<br>file, so the grass raster size limit would be smaller.
<br><br>And, it might not have even been such a hard limitation, more a<br>matter of principal - I just didn't want to copy a multi-GB file over<br>the network when there must be a better binary way, and zipping,<br>copying, unzipping a huge file doesn't save much time.
<br><br>-----<br>William Kyngesburye <<a href="mailto:kyngchaos@kyngchaos.com">kyngchaos@kyngchaos.com</a>><br><a href="http://www.kyngchaos.com/">http://www.kyngchaos.com/</a><br><br>All generalizations are dangerous, even this one.
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</a><br></blockquote></div><br><br clear="all"><br>-- <br>David Finlayson