When you say "trend", do you mean time derivative? Over what domain do you want to find the max and min? If it's a spatial domain, there is a well known set of script command lines that can find an areal max for you. It's not one of the built-in functions of Grads, though.<br>
<br>Jeff<br><br><div class="gmail_quote">On Mon, Nov 5, 2012 at 3:20 PM, Tobias Lundberg <span dir="ltr"><<a href="mailto:tobias.liljalundberg@gmail.com" target="_blank">tobias.liljalundberg@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Hi all,</div><div><br></div><div>I have a function describing the trend of the 2-m temperature. If I use the gxout stat, I can get the max and min values. But is it possible to do this automatically in any way. </div>
<div><br></div><div>Like,</div><div>define function_max=Max</div><div>define function_min=Min</div><div><br></div><div>Does anyone know? Or even better would be if there is a way to calculate the derivative of the trend line which is plotted?!</div>
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<div>best regards,</div><div><br></div><div>Tobias Lundberg</div><div><br></div><div><a href="mailto:tobias.liljalundberg@gmail.com" target="_blank">tobias.liljalundberg@gmail.com</a></div><div>+46 733 80 27 87</div><div>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Jeff Duda<br>Graduate research assistant<br>University of Oklahoma School of Meteorology<br>Center for Analysis and Prediction of Storms<br><br>