<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Thank you very much,it works!<br><br><div></div><div id="divNeteaseMailCard"></div><br>At 2012-04-04 22:24:38,"Stephen McMillan" <smcmillan@planalytics.com> wrote:<br> <blockquote id="isReplyContent" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Hi,<div>Assuming you have lon1 and lat1 defined, you need to put the coordinate expressions in quotes. For example:</div><div><br></div><div><div>lon1=121.5;lat1=27.9</div><div>'define u200=aave(UGRDprs,lon='lon1-10',lon='lon1+10',lat='lat1-10',lat='lat1+10')'</div>
<div><br></div><div>Good luck--</div><div>Stephen Mc</div><br><div class="gmail_quote">2012/4/4 lz007700 <span dir="ltr"><<a href="mailto:lz007700@163.com">lz007700@163.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="line-height:1.7;color:#000000;font-size:14px;font-family:arial">Dear GrADS Users,<br><br>I'm trying to calculate the area average wind ,when I use the function (aave) in gs,as follows:<br>'define u200=aave(UGRDprs,lon=lon1-10,lon=lon1+10,lat=lat1-10,lat=lat1+10)'<br>
it prompt such warnings "Syntax Error: Invalid dimension expression<div> Dimension value missing or invalid</div>Error from AAVE: Invalid dimension expression"<br>lon1,lat1 has been transformed to real number,not character.<br>
IS it must be specific numeral when we use function(aave)?<br>when I define u200 as follows:<br>'define u200=aave(UGRDprs,lon=111.5,lon=131.5,lat=17.9,lat=37.9)' <br>it works.why?
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