Not sure about doing it w/in grads itself but have you considered doing it in a separate kml file? It is really kludgy but there are only 2 ways I know of to approach this.<br><br>1) Brute force it by creating images of all the possible combinations of arrows/vectors and then referencing the appropriate one in your script to build the kml.<br>
<br>2) This is a derivation of #1 and requires that you can make use of a server-side language like php. Basically you set the icon to be a specially formatted url which will render the appropriate icon (e.g. <a href="http://example.com/windbarb.php?spd=10&dir=320">http://example.com/windbarb.php?spd=10&dir=320</a>). This is how wunderground displays the wx station barbs on their wundermap.<br>
<br>Cheers,<br>Matt<br><br><div class="gmail_quote">On Tue, Sep 4, 2012 at 12:40 PM, Travis Wilson <span dir="ltr"><<a href="mailto:sk8ter0028@hotmail.com" target="_blank">sk8ter0028@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div dir="ltr">
<p class="MsoNormal">Hello,</p>
<p class="MsoNormal">
The kml feature in grads is quite useful for polygons and contours. I was
wondering if it is possible (or will be) to plot wind barbs or vectors using
the kml line/poly function? A tif image overlay of winds vectors is not
what I want. Here is an example of a google earth animated kml I have
created using grads, adding wind vectors/barbs would be extremely useful (<a href="http://www.atmos.ucla.edu/~wilson28/pages/googletemps_wide.html" target="_blank">http://www.atmos.ucla.edu/~wilson28/pages/googletemps_wide.html</a>).
</p>
<p class="MsoNormal">Thank you,</p>
<p class="MsoNormal">Travis</p> </div></div>
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