On Thu, Aug 18, 2011 at 9:59 AM, Walsh, Brian J <span dir="ltr"><<a href="mailto:brian.walsh@amec.com">brian.walsh@amec.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
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<p class="MsoNormal">Hello Grads Users,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I’m trying to calculate the maximum 3-hourly precipitation amounts from one model in a given domain.<u></u><u></u></p>
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<p class="MsoNormal">So, for instance, if I choose a point (say 46.0 N 57.0W), I would like to get the maximum 3-hourly precipitation amounts from the GFS for the surrounding grid points (i.e. I don’t want a point forecast prediction). I’m not sure if I can
have it output the maximum amount from the nearest neighbor grid points or if I need to specify a domain.<u></u><u></u></p>
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<p class="MsoNormal">I’ve tried the max function without success and was hoping someone may have done something similar and it worked. I’m looking to output the data into a file, not plot it.<u></u><u></u></p>
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<p class="MsoNormal">Any help would be greatly appreciated.<u></u><u></u></p>
<p class="MsoNormal"><u></u> </p></div></div></blockquote><div><br></div><div>With careful design of a coarser grid, the re() extension in opengrads could be used to regrid the original data to a coarser grid using the box averaging method and get what you want. No need to write a separate file, just do the regridding on the fly. More more info, see here:</div>
<div><br></div><div> <a href="http://opengrads.org/doc/udxt/re/">http://opengrads.org/doc/udxt/re/</a></div><div><br></div><div> Arlindo</div><div><br></div></div>-- <br>Arlindo da Silva<br><a href="mailto:dasilva@alum.mit.edu">dasilva@alum.mit.edu</a><br>