<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Hola buen dia, tengo el siguiente problema:</span></div><div><span>quiero obtener el valor de promedio de area (aave)de una variable,&nbsp; del modelo GFS para una zona especifica (un poligono), pero solo me reconoce la funcion para una malla; estoy pensando usar una mascara que solo tenga valores en el area que quiero, pero no encuentro como deberia de construir ese archivo (1 y 0) y como poder usarlo, he estado leyendo pero hasta ahora solo he encontrado el basemap pero solo me sirve para el oceano o el territorio pero al hacer el aave me toma los valores que esta en el oceano, espero haberme explicado</span></div><div><span>******************</span></div><div><span><span class="hps">Hello</span> <span class="hps">good day</span><span>, I have the</span> <span class="hps">following
 problem</span><span>:</span><br><br><span class="hps">I want to</span> <span class="hps">get the</span> <span class="hps">average</span> <span class="hps">value</span> <span class="hps">area</span> <span class="hps atn">(</span><span>aave</span><span>)</span> <span class="hps">of a variable</span><span>,</span> <span class="hps">the GFS</span> <span class="hps">for a</span> <span class="hps">specified</span> <span class="hps">area</span> <span class="hps atn">(</span><span>a polygon</span><span>)</span><span>,</span> <span class="hps">but only</span> <span class="hps">recognizes</span> <span class="hps">me</span> <span class="hps">for a mesh</span> <span class="hps">function</span><span>, I'm</span> <span class="hps">planning to use</span> <span class="hps">a mask</span> <span class="hps">that only has</span> <span class="hps">values ​​in the</span> <span class="hps">area</span> <span class="hps">that</span> <span
 class="hps">want</span><span>,</span> <span class="hps">but</span> <span class="hps">can not find how</span> <span class="hps">to build</span> <span class="hps">that file</span> <span class="hps">should</span> <span class="hps">(1 and</span> <span class="hps">0)</span> <span class="hps">and how</span> <span class="hps">to use it</span><span>, I've</span> <span class="hps">been reading</span> <span class="hps">but so far</span> <span class="hps">I've only found</span> <span class="hps">the</span> <span class="hps">basemap</span> <span class="hps">but only</span> <span class="hps">serves</span> <span class="hps">me</span> <span class="hps">to</span> <span class="hps">the ocean</span><span>, or</span> <span class="hps">the territory</span> <span class="hps">but</span> <span class="hps">to</span> <span class="hps">make</span> <span class="hps">me</span> <span class="hps">take</span> <span class="hps">the</span> <span class="hps">aave</span> <span
 class="hps">values ​​that</span> <span class="hps">are in</span> <span class="hps">the ocean</span><span>,</span> <span class="hps">I hope I explained<var id="yui-ie-cursor"></var></span></span></div><div><span>****************</span></div><div><span>saludos</span></div><div><span>atte</span></div><div><span>jluis</span></div><div><span></span>&nbsp;</div><div><br></div>  <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <div style="margin: 5px 0px; padding: 0px; border: 1px solid rgb(204, 204, 204); height: 0px; line-height: 0; font-size: 0px;" class="hr" contentEditable="false" readonly="true"></div></font></div></div> </div>  </div></body></html>