<div dir="ltr"><div class="gmail_default" style="font-size:small">The "wbcrit" variable is simply a "delta" amount that is used to determine if two wind barbs are within wbcrit distance of each other. If so, then one of them doesn't get drawn. If you set this to 0, then all of your wind barbs will get drawn.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The barb_5.ncl example shows what the wind barbs look like without any checking of distance.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">The barb_6.ncl example adds the "wbcrit" check as a way of "thinning" the wind barbs.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">If you look at your barb05_dec.pdf graphic, you will see some wind barbs that are so close they are touching. In the barb6_dec.pdf graphic, if two wind barbs are within 97 meters (according to the comments of the scripts), then the second wind barb will not get drawn. If you look at the plot closely, you can definitely see where some of the wind barbs in this plot are not getting drawn.</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">--Mary</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 6, 2015 at 8:53 AM, Amadou Coulibaly <span dir="ltr"><<a href="mailto:mpapin24@gmail.com" target="_blank">mpapin24@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:courier new,monospace;font-size:large">Hi NCL users,<br><br></div><div class="gmail_default" style="font-family:courier new,monospace;font-size:large">I plotted vertical wind profile using wmbarb as showing in <span style="color:rgb(0,0,255)"><span style="background-color:rgb(255,255,255)">barb_5.ncl</span></span> and <span style="color:rgb(0,0,255)"><span style="background-color:rgb(255,255,255)">barb_6.ncl</span></span> examples in NCL web site on Wind Barbs. I got two different plots. I am confusing about that two plots because of the use of the minimum distance between two barbs. What is the meaning of this minimum distance? Are that two plots the same? <br><br><span style="color:rgb(255,0,0)">wbcrit = 0 ; minimum distance in meters between wind barbs ??????</span><br><br></div><div class="gmail_default" style="font-family:courier new,monospace;font-size:large">Please find attached my plots and scripts. <br clear="all"></div><br>-- <br><div><div dir="ltr"><b style="font-size:small;font-family:tahoma,sans-serif"><font color="#000066"> </font><font color="#000066">COULIBALY </font><font color="#000066">AMADOU </font></b><br><span style="color:rgb(0,0,102);font-family:tahoma,sans-serif;font-size:small">PhD Student on West African Climate System (WACS)</span><br><font style="font-size:small;font-family:tahoma,sans-serif" color="#0000ff">FUTA</font><font style="font-size:small;font-family:tahoma,sans-serif" color="#000066"> - </font><font style="font-size:small;font-family:tahoma,sans-serif" color="#0000ff">F</font><font style="font-size:small;font-family:tahoma,sans-serif" color="#000066">ederal </font><font style="font-size:small;font-family:tahoma,sans-serif" color="#0000ff">U</font><font style="font-size:small;font-family:tahoma,sans-serif" color="#000066">niversity of </font><font style="font-size:small;font-family:tahoma,sans-serif" color="#0000ff">T</font><font style="font-size:small;font-family:tahoma,sans-serif" color="#000066">echnology of </font><font style="font-size:small;font-family:tahoma,sans-serif" color="#0000ff">A</font><font style="font-size:small;font-family:tahoma,sans-serif" color="#000066">kure, Nigeria</font><div><font face="tahoma, sans-serif" size="2" color="#000066"><br></font><div><span style="color:rgb(76,17,48)"><span style="font-family:arial,helvetica,sans-serif"><i style="font-weight:bold">Visiting Student - 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