[gradsusr] Problem posting nps grib2 data in grads

[Goodson,Ron [Edm]]

Hi
 
I already mentioned to Lewis (we work for the same organization) that
his problem is that his grib-file contains 2 different grids (depending
upon variable).
 
I answer him to the entire list, though, in case somebody knows how to
handle this situation (other than breaking the file into two files ..
each with their own grid).
 
tks
 
ron

________________________________

From: gradsusr-bounces at gradsusr.org
[mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Poulin,Lewis [CMC]
Sent: June 8, 2012 9:40 AM
To: gradsusr at gradsusr.org
Subject: [gradsusr] Problem posting nps grib2 data in grads



Hello 

I am having difficulty in posting in GrADS my grib2 data on a north
polar stereographic grid 

I placed all relevent files and information in the directory at: 
http://collaboration.cmc.ec.gc.ca/cmc/CMOI/grads/regional/
<http://collaboration.cmc.ec.gc.ca/cmc/CMOI/grads/regional/>  

>From this site you can see my grib2 file: called reg_00_024.grib2 

I am using grads-2.0.a5 

I made the following ctl and idx files (available that above site) 
  reg_00_024.grib2.ctl 
  reg_00_024.grib2.idx 

When I run the following simple script: 

*start sample script 

'open reg_00_024.grib2.ctl' 

'clear' 
'set lon 230 310' 
'set lat 30 70' 
'set mpvals 235 305 35 65' 
'set mproj nps' 

'set lev 850' 
'd HGTprs' 

'set lev 500' 
'd TMPprs' 

*end sample script 



I get the following messages: 

Notice: Implied interpolation for file reg_00_024.grib2.ctl 
 Interpolation will be performed on any data displayed from this file 
Cannot contour grid - all undefined values 
Cannot contour grid - all undefined values  



I cannot get my data to display. 

Thanks in advance for your suggestions and assistance. 

Lewis 

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