[gradsusr] 'tas' Plotting Error

[Jeffrey Duda]

Adam,
>From what you included, I don't know if 3 of the last 4 arguments in the
PDEF line are correct or not.  From exactly where are you getting the data?
Also, how does it look wrong?

Jeff

On Mon, Feb 14, 2011 at 3:47 PM, Adam Cinderich <cinderic at msu.edu> wrote:

> Jeff,
>
>
>
> Thank you.  I did a ‘q file’ and it says 1 variable.  The variable was
> correct, but looking over my .ctl file once more, I realized the problem was
> within the .ctl file and it now plots.
>
>
>
> However, I do have another question.  I plotted tas for my domain (The
> Great Lakes Region) 41-49 and 267-285 and it does not look correct.  I
> believe it has to do with my ‘pdef’ line in the .ctl file (I have been
> trying to come up with the correct pdef lines for the NARCCAP models and
> haven’t been successful yet).
>
>
>
> I came up with the following pdef line: *pdef   123  104  NPS  78.5  166.5
>  263  50  50*
>
> based on the ncdump information for the ECPC model and GrADS pdef syntax
> requirements:
>
>         xc = 123 ;
>
>         yc = 104 ;
>
>         time = UNLIMITED ; // (731 currently)
>
>         bnds = 2 ;
>
> variables:
>
>         char polar_stereographic ;
>
>                 polar_stereographic:grid_mapping_name =
> "polar_stereographic" ;
>
>                 polar_stereographic:longitude_of_central_meridian = 263. ;
>
>                 polar_stereographic:straight_vertical_longitude_from_pole =
> 263. ;
>
>                 polar_stereographic:standard_parallel = 60. ;
>
>                 polar_stereographic:TrueGridLength_Latitude = 60. ;
>
>                 polar_stereographic:XGridLength_M = 50000. ;
>
>                 polar_stereographic:YGridLength_M = 50000. ;
>
>                 polar_stereographic:PoleOnPlane = "north" ;
>
>                 polar_stereographic:false_easting = 3925000. ;
>
>                 polar_stereographic:false_northing = 8325000. ;
>
>                 polar_stereographic:latitude_of_projection_origin = 90. ;
>
>
>
> Are you, or is anyone else, able to offer a suggestion on what might be
> wrong (and how to correct) my pdef line?
>
>
>
> Thank you,
>
> Adam
>
>
>
>
>
> *From:* gradsusr-bounces at gradsusr.org [mailto:
> gradsusr-bounces at gradsusr.org] *On Behalf Of *Jeffrey Duda
> *Sent:* Monday, February 14, 2011 4:23 PM
> *To:* GrADS Users Forum
> *Subject:* Re: [gradsusr] 'tas' Plotting Error
>
>
>
> Adam,
> Do "q file" to see if the variable tas shows up in the list of variables.
> It might also be a matter of capitalization.  Grads is case sensitive in
> this way.
>
> Jeff Duda
>
> On Mon, Feb 14, 2011 at 3:20 PM, Adam Cinderich <cinderic at msu.edu> wrote:
>
> Hello:
>
>
>
> I am trying to plot using open Grads.  I have opened my .ctl file and it
> says that my data file was opened.  However, when I attempt to plot ‘tas’ it
> says the following:
>
>
>
> Syntax Error: Invalid Operand
>
>    ‘tas’ not a variable or function name
>
>    Error occurred at column 1
>
> DISPLAY error:  Invalid expression
>
>    Expression = tas
>
>
>
> ‘tas’ is my temperature at surface variable and when I do an ncdump of the
> data file, it shows ‘tas’ as the variable.  Can someone offer any
> suggestions as to why it won’t let me plot my variable and/or tell me if a
> command exists for Grads that will list variables that are available to be
> plotted?
>
>
>
> Thank you,
>
> Adam
>
>
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>
>
>
> --
> Jeff Duda
> Iowa State University
> Meteorology Graduate Student
> 3134 Agronomy Hall
> www.meteor.iastate.edu/~jdduda <http://www.meteor.iastate.edu/%7Ejdduda>
>
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>


-- 
Jeff Duda
Iowa State University
Meteorology Graduate Student
3134 Agronomy Hall
www.meteor.iastate.edu/~jdduda
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