Ole,<br><br>This option is for the AAIGRID driver. So this option is valid any time the format is handled.<br><br>In a python script you set the option you need to set this option during the call to gdal.Open() to set a specific datatype.<br>
Refer to <a href="http://trac.osgeo.org/gdal/browser/trunk/autotest/gdrivers/aaigrid.py#L245">http://trac.osgeo.org/gdal/browser/trunk/autotest/gdrivers/aaigrid.py#L245</a> and <a href="http://trac.osgeo.org/gdal/browser/trunk/autotest/gdrivers/aaigrid.py#L247">http://trac.osgeo.org/gdal/browser/trunk/autotest/gdrivers/aaigrid.py#L247</a> . Remember to set it to 'None'.<br>
<br>To set this option for gdal/ogr utilities use the option "--config" as described in <a href="http://www.gdal.org/gdal_utilities.html">http://www.gdal.org/gdal_utilities.html</a>.<br><br>Use the CPLSetConfigOption() function in C/C++ code.<br>
<br><div class="gmail_quote">On Mon, Aug 9, 2010 at 8:10 AM, Ole Nielsen <span dir="ltr"><<a href="mailto:Ole.Nielsen@aifdr.org">Ole.Nielsen@aifdr.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<br>
Thanks for fixing the precision loss so quickly.<br>
<div class="im"><br>
"you now can set the configuration option AAIGRID_DATATYPE to Float64 to<br>
force Float64 being used to avoid the loss of precision."<br>
<br>
</div>I am not exactly sure whether this option relates to the gdal_translate<br>
command line utility or the Python binding (ReadAsArray) - or both.<br>
<br>
Could you perhaps post the updated script that produced the double precision<br>
values correctly?<br>
<br>
Thanks<br>
Ole Nielsen<br>
<br>
<br>
<br>
<br>
-----<br>
Ole Nielsen<br>
<div class="im">Australia - Indonesia Facility for Disaster Reduction<br>
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