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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">Using OpenEV from FWTools version 2.4.7 to convert the GXF file found at
<a href="http://pubs.usgs.gov/of/2000/ofr-00-0042/data/">http://pubs.usgs.gov/of/2000/ofr-00-0042/data/</a> from the GXF format to AAIGrid format I have found an issue.&nbsp; In the GXF file the #DUMMY value/string is -1e32 and this is the same value/string found
 in the data portion of the GXF file.&nbsp; After conversion in the AAIGrid file, the NODATA line reads<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">NODATA_value -1.0000000000000001e&#43;032<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">but the value -1.0000000331813535e&#43;032 is found in the data portion of the AAIGrid file where the value -1.0000000000000001e&#43;032 should be found.&nbsp; As OpenEV uses
 GDAL/OGR to do the conversion I have posted this issue here.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">David M. Bake<b>r<o:p></o:p></b></span></i></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">Senior Geologist - Chief Technology Advisor<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">Chesapeake Energy Corporation<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">405-935-3715 office<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black">405-496-5373 cell<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;
color:black"><a href="mailto:david.m.baker@chk.com">david.m.baker@chk.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p>&nbsp;</o:p></p>
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