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<DIV><FONT face=Arial size=2>Hi John</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Within a North Polar Sterographic display use this
in the script to get wind barbs </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>* Set colour of barbs to blue</FONT></DIV>
<DIV>
<P><FONT face=Arial size=2>'set ccolor 11' </FONT></P>
<P><FONT face=Arial size=2>* Set output for wind barbs</FONT></P>
<P><FONT face=Arial size=2>'set gxout barb'</FONT></P>
<P><FONT face=Arial size=2>'d skip(u,6,6);v' </FONT></P>
<P><FONT face=Arial size=2>'set gxout contour'</FONT></P></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>the skip function permits you to thin the
barbs.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If you want real vectors then use this
section</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT size=2>
<P><FONT face=Arial>If you have the true north wind direction as a number and
you want to create a vector use this:</FONT></P>
<P>'set gxout vector'</P>
<P>'set arrscl 0.5 2 ' </P>
<P>'set arrowhead 0.1 '</P>
<P>'display skip(-1*1*sin(psd*3.1414/180),4,4) ; -1*1*cos(psd*3.1414/180) '</P>
<P>'set gxout contour'</P>
<P>Where psd is the direction to 360 degrees of the compass. Again skip
with the ,4,4 thins the display (show every 4th row and 4th column of
vectors.</P>
<P> </P>
<P>I hope this helps.</P>
<P> </P>
<P>Sincerely</P>
<P> </P>
<P>Mac</P>
<P> </P>
<P><FONT face=Arial>M.A.(Mac) MacLeod <BR>President and General
Manager,<BR>Scotia Weather Services Inc.<BR>192 Wyse Road, Suite
8,<BR>Dartmouth, Nova Scotia, B3A 1M9<BR>Tele: 902-468-3866 <BR>Cell:
902-225-5747<BR>Fax: 902-461-1768<BR>E-mail: <A
href="mailto:mmacleod@scotiaweather.com">mmacleod@scotiaweather.com</A><BR>visit
us at: <A
href="http://www.scotiaweather.com">www.scotiaweather.com</A><BR></FONT></P>
<P> </P></FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>----- Original Message ----- </FONT>
<DIV><FONT face=Arial size=2>From: "John Papineau" <</FONT><A
href="mailto:John.Papineau@NOAA.GOV"><FONT face=Arial
size=2>John.Papineau@NOAA.GOV</FONT></A><FONT face=Arial
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>To: <</FONT><A
href="mailto:GRADSUSR@LIST.CINECA.IT"><FONT face=Arial
size=2>GRADSUSR@LIST.CINECA.IT</FONT></A><FONT face=Arial
size=2>></FONT></DIV>
<DIV><FONT face=Arial size=2>Sent: Tuesday, December 05, 2006 17:37
PM</FONT></DIV>
<DIV><FONT face=Arial size=2>Subject: vector display on polar stereo
grid</FONT></DIV></DIV>
<DIV><FONT face=Arial><BR><FONT size=2></FONT></FONT></DIV><FONT face=Arial
size=2>> Grads Folks-<BR>> What do I need to do in order to
display winds (vectors) within<BR>> a north polar stereo projection. Do
I need to covert or doing something<BR>> with the pdef line within the
.ctl file??<BR>> <BR>> Many Thanks-John<BR>> </FONT></BODY></HTML>