# [gradsusr] Getting SREF Probability Variables To Plot In GrADS

Perry, Aaron @ LSC Aaron.Perry at lsc.vsc.edu
Wed Jun 4 20:46:10 EDT 2014

```Hi Jennifer,

I just went back and fixed those variables in the control file.

Here's the output from gribmap -v:

1.1: lev1=1,0 a1,1.27 var=0,1,8,1 MATCH
2.1: lev1=1,0 a1,12.7 var=0,1,8,1 MATCH
3.1: lev1=1,0 a1,0.25 var=0,1,8,1 valid time 2014060606:00 (t=7.5) has non-integer grid index
4.1: lev1=1,0 a1,38.1 var=0,1,8,1 valid time 2014060612:00 (t=8.5) has non-integer grid index
5.1: lev1=1,0 a1,2.54 var=0,1,8,1 valid time 2014060700:00 (t=10.5) is outside grid limits
6.1: lev1=1,0 a1,101.6 var=0,1,8,1 valid time 2014060709:00 (t=12) is outside grid limits
7.1: lev1=1,0 a1,12.7 var=0,1,8,1 valid time 2014060721:00 (t=14) is outside grid limits

Looks like variables 5-7 are giving me issues, possibly THE issue?

Onward and Upward,

Aaron D. Perry
Atmospheric Sciences
Lyndon State College
Class of 2016
Boston, MA
Mobile: 617-780-4312
________________________________
Sent: Wednesday, June 04, 2014 6:36 PM
To: GrADS Users Forum
Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS

Hi, Aaron --
You don't need the alias syntax with grib data. The var1.1 syntax is just a dummy variable name that is designed to be unique to the record. You can use use "p1" instead of "var1.1=>p1".

What is the output from gribmap -v?
--Jennifer

On Jun 4, 2014, at 6:25 PM, Perry, Aaron @ LSC wrote:

I took a look at the suggestion documentation and ran grib2scan. Below is a copy/paste link of the output. After reviewing the output, I was able to come up with this modified control file:

grib2scan Output: http://paste2.org/zE92be26

Modified Control File (Not working):

undef 9.999E+20
* produced by g2ctl v0.0.9
* command line options: /home/aaron/grads/data/sref_prob/20140604/15Z/sref_prob.20140604.15z.grib2
* griddef=1:0:(697 x 553):grid_template=30:winds(grid): Lambert Conformal: (697 x 553) input WE:SN output WE:SN res 8 Lat1 1.000000 Lon1 214.500000 LoV 253.000000 LatD 50.000000 Latin1 50.000000 Latin2 50.000000 LatSP 0.000000 LonSP 0.000000 North Po
dtype grib2
pdef 697 553 lccr 1.000000 214.500000 1 1 50.000000 50.000000 253.000000 16232.000000 16232.000000
xdef 1415 linear 148.637041 0.147586114443721
ydef 573 linear 0.896436 0.147563636363636
tdef 10 linear 15Z04jun2014 6hr
zdef 1 linear 1 1
vars 7
var1.1=>p1 0,1,0 a1,1.27 0,1,8,1 Probability of event above 1.27
var2.1=>p2 0,1,0 a1,12.7 0,1,8,1 Probability of event above 12.7
var3.1=>p3 0,1,0 a1,0.25 0,1,8,1 Probability of event above 0.25
var4.1=>p4 0,1,0 a1,38.1 0,1,8,1 Probability of event above 38.1
var5.1=>p5 0,1,0 a1,2.54 0,1,8,1 Probability of event above 2.54
var6.1=>p6 0,1,0 a1,101.6 0,1,8,1 Probability of event above 101.6
var7.1=>p7 0,1,0 a1,12.7 0,1,8,1 Probability of event above 12.7
ENDVARS

Unfortunately, I am still receiving the "Cannot Contour Grid/Data Request Warning" errors. None of the variables will plot.

Onward and Upward,

Aaron D. Perry
Atmospheric Sciences
Lyndon State College
Class of 2016
Boston, MA
Mobile: 617-780-4312
________________________________
Sent: Wednesday, June 04, 2014 11:31 AM
To: GrADS Users Forum
Subject: Re: [gradsusr] Getting SREF Probability Variables To Plot In GrADS

Aaron,
Have a look at the doc page on descriptor file elements, under 'vars' and then 'additional codes'.  grib2scan in verbose mode should give you a suitable entry for the descriptor file.
--Jennifer

On Jun 4, 2014, at 8:50 AM, Perry, Aaron @ LSC wrote:

Good Morning All,

I've followed the steps that were outlined in this post (http://gradsusr.org/pipermail/gradsusr/2011-November/031529.html) a while back regarding getting SREF probabilities to plot in GrADS. I keep getting the "Cannot contour grid/data request" error and I was wondering if someone might know of solution.

Onward and Upward,

Aaron D. Perry
Atmospheric Sciences
Lyndon State College
Class of 2016
Boston, MA
Mobile: 617-780-4312
_______________________________________________

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Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030

_______________________________________________

--
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030

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