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Re: 20051104: 20051104: sncross

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  • Subject: Re: 20051104: 20051104: sncross
  • Date: Tue, 8 Nov 2005 13:49:02 -0600 (CST)
Thanks Steve-
The file is small so I attached it.
You should be able to use snlist to see whats in there.
Everything should be in the proper order, pressure decreasing. Hmm...except for the last few points. The composites had few samples in the upper troposphere so pressure may fluctuate up or down. I'll bet thats the problem. I have unattached the file... Ill fix it and see what happens. Thanks for the help. 
jimmyc

On Tue, 8 Nov 2005, Unidata Support wrote:



Jimmy,

The hundredths units on pressure shouldn't cause a problem.
Your soundings should be ordered bottom to top (the only
problem going the other way is that filter for the winds won't work).
Presumably, there aren't any negative or 0 pressure levels.
Are they monotonic in your file?

I'd be happy to take a look if you want to post one of your files.


Steve Chiswell
Unidata User Support


From: address@hidden
Organization: UCAR/Unidata
Keywords: 200511041753.jA4Hrq7s016716



Hi Steve-
I checked and my file does have pressure as the coordinate (1st variable
in the packing file, first variable in the snedit file). My variable,
PRES has two place after the decimal, (978.16 for example). Would that
make any difference?
I also dont have "standard levels". I am doing sounding composites so I
have pressure averaged making it highly unlikely I will hit, say, 500 mb.
Would any of this cause a problem?
jimmyc


On Fri, 4 Nov 2005, Unidata Support wrote:



Jimmy,

The first parameter in your parameter list that created the
upperair file should be pressure so that the log vertical coordinate
is valid. The error message seems to indicate that PRES is not the valid
coordinate for your upperair file.

Steve Chiswell
Unidata User Support



From: address@hidden
Organization: UCAR/Unidata
Keywords: 200511041627.jA4GRx7s005606



Hi-
I am trying to use a home built gempak file (for which I can plot
soundings) to make a cross section in sncross. I get the error -10 for
sncross. I have tried many permutations of the variables but can't make it
work.
Am I doing something obviously wrong?
I am using gempak version 5.7.2p2
Thanks

 GEMPAK-SNCROSS>l
 CXSTNS   = xww;tww;yww;zww;
 SNPARM   = thta
 SNFILE   = drop.gem
 DATTIM   = 030610/0500
 VCOORD   = pres
 PTYPE    = log/.5
 YAXIS    = 1000/300/100/1;1;1
 TAXIS    =
 LINE     = 3
 BORDER   = 1
 CINT     = 5
 WIND     = BM1
 TITLE    = 1
 PANEL    = 0
 DEVICE   = XW
 CLEAR    = YES
 FILTER   = YES
 TEXT     = .75
 CURVE    = 1
 CLRBAR   =
 CONTUR   = 0
 FINT     = 0
 FLINE    = 10-20
 CTYPE    = C
 GEMPAK-SNCROSS>yaxis=
 GEMPAK-SNCROSS>r
 [SNCROSS -10]  Error setting up graph; check invalid LOG axis.


--
James Correia Jr.
Ph.D. Candidate in Agricultural Meteorology
President of the ISU Graduate Meteorology Club
Dept. of Agronomy, Iowa State University
*********************************************
Email: address@hidden
Phone: 515-294-5587
Web: http://bruce.agron.iastate.edu/jimmyc/
ISU GMC: http://www.stuorg.iastate.edu/gmc/
*********************************************
"There is a difference between knowing the path and walking the path"
-"Morpheus"

"Wisdom. Strength. Courage. Generosity. Each of us are born with one of
these. We must find the other three inside of us."
from "Into the West"


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--
James Correia Jr.
Ph.D. Candidate in Agricultural Meteorology
President of the ISU Graduate Meteorology Club
Dept. of Agronomy, Iowa State University
*********************************************
Email: address@hidden
Phone: 515-294-5587
Web: http://bruce.agron.iastate.edu/jimmyc/
ISU GMC: http://www.stuorg.iastate.edu/gmc/
*********************************************
"There is a difference between knowing the path and walking the path"
-"Morpheus"

"Wisdom. Strength. Courage. Generosity. Each of us are born with one of
these. We must find the other three inside of us."
from "Into the West"


--
**************************************************************************** <
Unidata User Support                                    UCAR Unidata Program <
(303)497-8643                                                  P.O. Box 3000 <
address@hidden                                   Boulder, CO 80307 <
---------------------------------------------------------------------------- <
Unidata WWW Service              http://my.unidata.ucar.edu/content/support  <
---------------------------------------------------------------------------- <
NOTE: All email exchanges with Unidata User Support are recorded in the
Unidata inquiry tracking system and then made publicly available
through the web.  If you do not want to have your interactions made
available in this way, you must let us know in each email you send to us.



--
James Correia Jr.
Ph.D. Candidate in Agricultural Meteorology
President of the ISU Graduate Meteorology Club
Dept. of Agronomy, Iowa State University
*********************************************
Email: address@hidden
Phone: 515-294-5587
Web: http://bruce.agron.iastate.edu/jimmyc/
ISU GMC: http://www.stuorg.iastate.edu/gmc/
*********************************************
"There is a difference between knowing the path and walking the path"
-"Morpheus"

"Wisdom. Strength. Courage. Generosity. Each of us are born with one of
these. We must find the other three inside of us."
from "Into the West"