Re: Fw: skewT

As you programmed it,

   [snip]
   if (isatt(localOpts,"xpWind")) then
       xpWind = skewtx (localOpts@xpWind , skewty(1013.) )
   else
       xpWind = skewtx (45. , skewty(1013.) ) ; location of wind barb
   end if
   xpWind = 60 ; < ==== sets a hard-wired 60

is incorrect. Do not use this

The code shows the xpWind variable is the result
of a function call.

====
The original ncl-talk suggestion was to set the attribute

   dataOpts@xpWind =42 ; default=45

prior to calling the skew-T function. [dataOpts becomes localOpts]

This is discussed in the documentation at:
    http://www.ncl.ucar.edu/Applications/skewt.shtml

===
  If your are going to change the skewT code change

    xpWind = skewtx (60. , skewty(1013.) )

On 8/29/11 1:36 PM, steve kirby wrote:
> Sorry, let me clarify a bit -- the code block I show below is what I
> used when I got the results described in the earlier email (i.e., wind
> vertical profile remained in same x-position, but wind barbs on the
> vertical profile went away), that is, I keep the original code, but just
> add the xpWind=60 line as an override --
> ypWind = skewty (pw)
> xpWind = new (dimsizes(pw), float)
> if (isatt(localOpts,"xpWind")) then
> xpWind = skewtx (localOpts@xpWind , skewty(1013.) ) ; location of wind barb
> else
> xpWind = skewtx (45. , skewty(1013.) ) ; location of wind barb
> end if
> xpWind = 60
> So maybe there is another attribute to move the vertical wind profile
> bar farther to the right so as not to have it obscured by the
> temperature/dewpoint plot? Or a more appropriate setting for it?
> --Steve
>
> ----- Forwarded Message -----
> *From:* steve kirby <thin_runner@yahoo.com>
> *To:* Paula Doubrawa Moreira <pmoreira@alaska.edu>
> *Cc:* "ncl-talk@ucar.edu" <ncl-talk@ucar.edu>
> *Sent:* Monday, August 29, 2011 1:20 PM
> *Subject:* Re: [ncl-talk] skewT
>
> Paula,
>
> Thanks for that reference. However, I tried this, (in skewt_func.ncl):
>
> ; note, the original block is below
> ypWind = skewty (pw)
> xpWind = new (dimsizes(pw), float)
> if (isatt(localOpts,"xpWind")) then
> xpWind = skewtx (localOpts@xpWind , skewty(1013.) ) ; location of wind barb
> else
> xpWind = skewtx (45. , skewty(1013.) ) ; location of wind barb
> end if
>
> ;here's where I tried to set xpWind to a new value
> xpWind = 60
>
> yet, the vertical wind profile location remained the same, but the barbs
> went away leaving just a vertical line.
>
> --Steve
>
>
>
> *From:* Paula Doubrawa Moreira <pmoreira@alaska.edu>
> *To:* steve kirby <thin_runner@yahoo.com>
> *Cc:* "ncl-talk@ucar.edu" <ncl-talk@ucar.edu>
> *Sent:* Monday, August 29, 2011 11:34 AM
> *Subject:* Re: [ncl-talk] skewT
>
> Use the resource xpWind
>
> ;*"x" location for windbarbs*
> dataOpts@xpWind =42 ; default=45
>
> from http://www.ncl.ucar.edu/Applications/skewt.shtml
>
>
> On Mon, Aug 29, 2011 at 9:16 AM, steve kirby <thin_runner@yahoo.com
> <mailto:thin_runner@yahoo.com>> wrote:
>
> Hello,
>
> I'm using wrf_SkewT.ncl to generate skewT plots from WRF data. All
> is well except that the vertical profile of wind speed and direction
> (wind barbs) is overlaid by the temperature/dew point temperature
> plot (the green and white shaded area), below 5km. My best guess is
> that the positioning is setup in:
>
> $NCARG_ROOT/lib/ncarg/nclscripts/csm/skewt_func.ncl
>
> in that, I do see a couple of references,
> xWind=skewtx(45.,skewty(presWind(0)))
> sx(0:npres-1)=xWind; "x" location of wind plot
>
>
>
>
> but not being versed in NCL I wouldn't know how to change the positioning correctly. Could someone pls advise?
>
> Thanks much,
> Steve
>
>
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>
>
> --
> *Paula Doubrawa Moreira*/
> /Graduate Student - Research Assistant
> International Arctic Research Center
> University of Alaska Fairbanks
>
>
>
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Received on Mon Aug 29 14:30:41 2011