<div dir="ltr"><div><div>Hi David,<br><br></div>I don't know definitively, but my guess is that the setvalues approach is not plausible. Setvalues wants to operate on some resource associated with the polymarker, and to the best of my knowledge (and a quick look through the source code), there is no "visibility" type resource available.<br><br></div>Rick<br><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 26, 2015 at 12:47 PM, David Craig <span dir="ltr"><<a href="mailto:dcdavemail@gmail.com" target="_blank">dcdavemail@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I am plotting a sequence of contour maps similar to the example script<br>
animate_1.ncl. The data array for the contours is updated each iteration<br>
using setvalues. I wish to add polymarkers to the maps based on a<br>
condition being true in a particular iteration and remove them if the<br>
condition is not through. Is it possible to do this using setvalues or<br>
should I be redrawing the entire map each iteration??<br>
<br>
thanks in advance<br>
Dave<br>
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