<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dear Jeff,<div><br></div><div>Thanks for your response. Yes, your suggestion works just great, however, there is a caveat. Without templating my GFS GRIB2 files your suggestion was not possible. I merely used the new templating feature for g2ctl (<a href="http://www.cpc.noaa.gov/products/wesley/g2ctl.html">http://www.cpc.noaa.gov/products/wesley/g2ctl.html</a>) and then used your suggestion as in</div><div><br></div><div>'d max((((TMAX2m-273.16) *1.8) +32),t=9,t=15)'</div><div><br></div><div>It produced exactly what I was looking for. If templating is not used all GFS GRIB files have only one t value and t does not vary and no matter what I did, it would not work. Templating my GFS GRIB2 files actually has allowed me to process my data a lot faster overall too. </div><div><br></div><div><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Calibri; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div><div><div><div><div>Regards,</div><div><br></div><div>Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University of Cape Town)</div><div>Director of Meteorological Operations</div><div>CustomWeather, Inc.</div><div>San Francisco, California, USA</div><div><br></div><div>"Taking the World by Storm!"</div><div><br></div><div><a href="http://www.customweather.com">http://www.customweather.com</a></div><div><a href="http://www.myforecast.com">http://www.myforecast.com</a></div><div><a href="http://www.1stweather.com">http://www.1stweather.com</a></div><div><br></div><div>cell: 415-794-0411</div><div>work: 415-777-3566</div><div>email: <a href="mailto:klevey@customweather.com">klevey@customweather.com</a></div></div></div></div></div></span>
</div>
<br><div><div>On Oct 26, 2009, at 10/26/09 - 4:26 PM, Jeffrey Duda wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">I would think a simple "d max(tmp2m,t=(first),t=(last))" command should work. Granted, make sure you have your horizontal domain set to the entire globe.<br><br>Jeff Duda<br><br><div class="gmail_quote">On Mon, Oct 26, 2009 at 6:16 PM, Kevin M Levey <span dir="ltr"><<a href="mailto:klevey@customweather.com">klevey@customweather.com</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;">MON 26OCT09: 1615PDT<br>
<br>
Dear Grads users<br>
<br>
It turns out my current logic is not correct. I am trying to find the<br>
highest TMAX2m value for each point on the globe from four 6-hour GFS<br>
forecast hours and then plot this value, so that the single plot will<br>
show the highest value for each of the 720x181 data points from the<br>
0.5 GFS data covering a period of 24-hours. I know the answer is<br>
probably simple, but I seem to making this harder than it should be.<br>
Any help would be greatly appreciated.<br>
<br>
Thanks.<br>
<br>
Regards,<br>
<br>
Kevin M Levey, MSc in Oceans and Atmospheric Sciences (University of<br>
Cape Town)<br>
Director of Meteorological Operations<br>
CustomWeather, Inc.<br>
San Francisco, California, USA<br>
<br>
"Taking the World by Storm!"<br>
<br>
<a href="http://www.customweather.com/" target="_blank">http://www.customweather.com</a><br>
<a href="http://www.myforecast.com/" target="_blank">http://www.myforecast.com</a><br>
<a href="http://www.1stweather.com/" target="_blank">http://www.1stweather.com</a><br>
<br>
cell: 415-794-0411<br>
work: 415-777-3566<br>
email: <a href="mailto:klevey@customweather.com" target="_blank">klevey@customweather.com</a><br>
</blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Iowa State University<br>Meteorology Graduate Student<br>3134 Agronomy Hall<br><a href="http://www.meteor.iastate.edu/~jdduda">www.meteor.iastate.edu/~jdduda</a><br>
</blockquote></div><br></div></body></html>