<div dir="ltr"><div class="gmail_default" style="font-size:small">Xi,</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default" style="font-size:small">I don't think we have any examples of this, but I typed "arrow polyline" in the search box of the NCL home page, and found this post by Arindam Chakraborty:</div><div class="gmail_default" style="font-size:small"><br></div><div class="gmail_default"><a href="https://www.ncl.ucar.edu/Support/talk_archives/2010/1344.html">https://www.ncl.ucar.edu/Support/talk_archives/2010/1344.html</a><br></div><div class="gmail_default"><br></div><div class="gmail_default">I've attached the arrow.ncl script that he included in that post. You should be able to run it as-is.</div><div class="gmail_default"><br></div><div class="gmail_default">--Mary</div><div class="gmail_default"><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, May 10, 2017 at 5:28 PM, Xi Chang <span dir="ltr"><<a href="mailto:xi.chang01@gmail.com" target="_blank">xi.chang01@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">Dear NCL,<div><br></div><div>Is there any a function to <span style="color:rgb(0,0,0)">add an arrow head to show the direction of a line (using polylines)?</span></div><div><span style="color:rgb(0,0,0)">Thanks a lot,</span></div><div><span style="color:rgb(0,0,0)"><br></span></div><div><span style="color:rgb(0,0,0)">Best,</span></div><div><span style="color:rgb(0,0,0)">Xi</span></div></div>
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