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<DIV><FONT color=#000080 size=2 face=Verdana>Thank you all for your reply and 
suggestions.</FONT></DIV>
<DIV><FONT color=#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=#000080>I wanna know how to set the ccolor to 1 while 
mag(u,v)&lt;10?</FONT></DIV>
<DIV><FONT color=#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=#000080>Thanks in advance.</FONT></DIV>
<DIV><FONT color=#000080></FONT>&nbsp;</DIV>
<DIV><FONT color=#000080>Best Regards,</FONT></DIV>
<DIV><FONT color=#000080 size=2 face=Verdana></FONT>&nbsp;</DIV>
<DIV><FONT color=#000080 size=2 face=Verdana></FONT>&nbsp;</DIV>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana>2009-11-20 </FONT></DIV><FONT 
color=#000080 size=2 face=Verdana>
<HR style="WIDTH: 100px" align=left color=#b5c4df SIZE=1>
</FONT>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana><SPAN>Yan Libin</SPAN> 
</FONT></DIV>
<HR color=#b5c4df SIZE=1>

<DIV><FONT size=2 face=Verdana><STRONG>发件人:</STRONG> L. Qi </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>发送时间:</STRONG> 2009-11-20&nbsp; 15:48:06 
</FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>收件人:</STRONG> GRADSUSR </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>抄送:</STRONG> </FONT></DIV>
<DIV><FONT size=2 face=Verdana><STRONG>主题:</STRONG> Re: difference between d u;v 
and d u;v;w </FONT></DIV>
<DIV><FONT size=2 face=Verdana></FONT> </DIV>
<DIV><FONT size=2 face=Verdana>
<DIV>When&nbsp;using&nbsp;"d&nbsp;u;v;w",&nbsp;the&nbsp;wind&nbsp;vector&nbsp;colors&nbsp;will&nbsp;change&nbsp;&nbsp;with&nbsp;the</DIV>
<DIV>magnitude&nbsp;of&nbsp;w;&nbsp;similarly,&nbsp;you&nbsp;can&nbsp;try&nbsp;"d&nbsp;u;v;mag(u,v)",&nbsp;in&nbsp;which&nbsp;the</DIV>
<DIV>wind&nbsp;vector&nbsp;colors&nbsp;will&nbsp;change&nbsp;with&nbsp;the&nbsp;magnitude&nbsp;of&nbsp;wind&nbsp;velocity.</DIV>
<DIV>There&nbsp;were&nbsp;discussions&nbsp;on&nbsp;this&nbsp;topic&nbsp;recently&nbsp;in&nbsp;this&nbsp;mail&nbsp;list</DIV>
<DIV>(Subject:&nbsp;colored&nbsp;vector).</DIV>
<DIV></DIV>
<DIV>For&nbsp;your&nbsp;second&nbsp;question,&nbsp;probably&nbsp;you&nbsp;can&nbsp;try&nbsp;to&nbsp;plot&nbsp;velocity</DIV>
<DIV>contours&nbsp;at&nbsp;the&nbsp;same&nbsp;time,&nbsp;that&nbsp;is:</DIV>
<DIV>&nbsp;d&nbsp;u;v</DIV>
<DIV>&nbsp;d&nbsp;mag(u,&nbsp;v)</DIV>
<DIV></DIV>
<DIV>Good&nbsp;luck.</DIV>
<DIV></DIV>
<DIV>Regards,</DIV>
<DIV>Lixin</DIV>
<DIV></DIV>
<DIV></DIV>
<DIV>On&nbsp;Fri,&nbsp;Nov&nbsp;20,&nbsp;2009&nbsp;at&nbsp;1:32&nbsp;AM,&nbsp;Yan&nbsp;Libin&nbsp;&lt;zjuyanlibin@163.com&gt;&nbsp;wrote:</DIV>
<DIV>&gt;&nbsp;Hi,&nbsp;everyone!</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;Can&nbsp;anyone&nbsp;tell&nbsp;me&nbsp;the&nbsp;difference&nbsp;between&nbsp;d&nbsp;u;v&nbsp;and&nbsp;d&nbsp;u;v;w?</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;BTW,&nbsp;When&nbsp;I&nbsp;plotted&nbsp;the&nbsp;global&nbsp;U-V&nbsp;wind&nbsp;field,&nbsp;the&nbsp;U-V&nbsp;values&nbsp;of&nbsp;some&nbsp;places</DIV>
<DIV>&gt;&nbsp;were&nbsp;so&nbsp;large&nbsp;that</DIV>
<DIV>&gt;&nbsp;the&nbsp;others&nbsp;with&nbsp;small&nbsp;U-V&nbsp;values&nbsp;were&nbsp;invisible.&nbsp;Is&nbsp;there&nbsp;any&nbsp;method&nbsp;which</DIV>
<DIV>&gt;&nbsp;can&nbsp;overcome&nbsp;this&nbsp;problem?</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;Any&nbsp;suggestion&nbsp;is&nbsp;welcome!</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;Thanks&nbsp;in&nbsp;advance!</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;Best&nbsp;regards,</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;Libin&nbsp;Yan</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;</DIV>
<DIV>&gt;&nbsp;2009-11-19</DIV>
<DIV>&gt;&nbsp;________________________________</DIV>
<DIV>&gt;&nbsp;Yan&nbsp;Libin</DIV></FONT></DIV></BODY></HTML>