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<div>Andy,</div>
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<div>For your second question – it looks like you're only applying the m/s to knot conversion to the v component. Try the following:</div>
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<div> 'd (u500;v500)*1.94384'</div>
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<div>Either that way or this way:</div>
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<div>'define uwind = u500*1.94384'</div>
<div>'define vwind = v500*1.94384'</div>
<div>'d uwind;vwind'</div>
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<div>Sam</div>
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<span style="font-weight:bold">From: </span>Andrew Revering <<a href="mailto:andy@f5data.com">andy@f5data.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>GrADS Users Forum <<a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a>><br>
<span style="font-weight:bold">Date: </span>Wed, 21 Aug 2013 10:07:28 -0500<br>
<span style="font-weight:bold">To: </span>GrADS User List <<a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a>><br>
<span style="font-weight:bold">Subject: </span>[gradsusr] Wind Barbs<br>
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<div>Couple questions about wind barbs:</div>
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<div>- Is it possible to plot 'nothing' where a calm wind barb would go? Right now it shows a circle or a zero where calm wind is. I'd rather it plot nothing in those locations.</div>
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<div>- Also, the speed is incorrect in my wind barbs. I'm trying to plot it in knots and I'm using: 'display u500;v500*1.94384'</div>
<div>The mag() function returns different values than what is being plotted for my barbs, so apparently I'm not converting my wind barb from m/s to knots properly. Thoughts?</div>
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<div>Thanks,</div>
<div>Andy</div>
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