[gradsusr] Wind Barbs

[Sam Wilson]

Andy,

For your second question – it looks like you're only applying the m/s to knot conversion to the v component.  Try the following:

 'd (u500;v500)*1.94384'

Either that way or this way:

'define uwind = u500*1.94384'
'define vwind = v500*1.94384'
'd uwind;vwind'


Sam

From: Andrew Revering <andy at f5data.com<mailto:andy at f5data.com>>
Reply-To: GrADS Users Forum <gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>>
Date: Wed, 21 Aug 2013 10:07:28 -0500
To: GrADS User List <gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>>
Subject: [gradsusr] Wind Barbs

Couple questions about wind barbs:

- 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.

- 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'
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?

Thanks,
Andy
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