[gradsusr] Problem to plot a figure in GrAds from gaussian latitude grid

Thu Dec 22 22:41:33 EST 2011

Jose,
No, I don't know any other tricks. Like I said, this sounds like a parsing
error when Grads reads the control file.  Arlindo or Jennifer will probably
have the answer.

Jeff

On Thu, Dec 22, 2011 at 5:20 PM, Jose Augusto Paixão Veiga <
veiga.uea at gmail.com> wrote:

> Yes Jeff.
> I tried use a different number like 73.9480 and GrAds split it into 73 and
> .9480. So, I used 73.0 instead of the original value of 73.9475 (after your
> hint) and GrAds produced the values 73 and .0
>
> I really don't know what could be happening.
>
> Any other hint Jeff?
>
> Thanks,
>
> José Augusto P. Veiga,
>
> ======================================
> Universidade do Estado do Amazonas
> Departamento de Meteorologia
> Escola Superior de Tecnologia (EST)
>
> -----------------------------------------------------------------------------
> Av. Darcy Vargas, 1200, Manaus-AM Brasil
> Work phone:    (92) 3878 4333
> Skype: veiga_j.a.p.
>
> -----------------------------------------------------------------------------
> CV: http://lattes.cnpq.br/4027612512091565
> URL:http://scientificmet.wordpress.com/
> http://nmet.wordpress.com/
>
> -----------------------------------------------------------------------------
>
> On Dec 22, 2011, at 6:59 PM, Jeff Duda wrote:
>
> Jose,
> Have you tried using other numbers that are similar to 73.9475 but have
> fewer digits?  It sounds like some odd parsing error.
>
> Jeff Duda
>
> On Thu, Dec 22, 2011 at 4:11 PM, Jose Augusto Paixão Veiga <
> veiga.uea at gmail.com> wrote:
>
>> Dear all,
>>
>> I am facing the following problem in GrAds:
>>
>> After producing my CTL file and plotted the results I get surprised with
>> plot result (Figure in attach).   Note that the fifth point from the last
>> latitude is shifted for the equatorial latitude. So, I decided to use the
>> command q ctlinfo to get some information about the latitudes ingested by
>> GrAds after I've been opened the CTL file. Them, I realize that GrAds
>> "make" some confusing with one specific latitude point.   Pay attention,
>>
>> This is a part of the result from the command q ctlinfo :
>>
>> xdef 1 linear 1 1
>> ydef 64 levels -87.8638 -85.0965 -82.3129 -79.5256 -76.7369 -73.9475
>> -71.1577 -68.3678
>>  -65.5776 -62.7873 -59.997 -57.2066 -54.4162 -51.6257 -48.8352 -46.0447
>> -43.2542 -40.4636
>>  -37.6731 -34.8825 -32.0919 -29.3014 -26.5108 -23.7202 -20.9296 -18.139
>> -15.3484 -12.5578
>>  -9.76715 -6.97653 -4.18592 -1.39531 1.39531 4.18592 6.97653 9.76715
>> 12.5578 15.3484
>>  18.139 20.9296 23.7202 26.5108 29.3014 32.0919 34.8825 37.6731 40.4636
>> 43.2542
>>  46.0447 48.8352 51.6257 54.4162 57.2066 59.997 62.7873 65.5776 68.3678
>> 71.1577
>>  *73 0.9475* 76.7369 79.5256 82.3129 85.0965
>> zdef 1 linear 1 1
>>
>> Thus, GrAds separates one latitude value into two others. I told this
>> because the latitude point 73.9475 is duplicated into the points *73*and
>> *0.9475*. When I change the value for the integer 73 everything goes
>> well and the value is not shifted for the "center of figure". However I
>> wouldn't like to to this all the time I face this.
>>
>> I would appreciate any hint and help.  I don't know what is producing
>> this split in the latitude value.
>>
>>
>> *This is part of my ctl file *
>>
>> title CNRM  model output prepared for IPCC Fourth Assessment climate of
>> the 20th Century experiment (20C3M)
>> xdef 1 linear 1 1
>> ydef   64 levels -87.8638 -85.0965 -82.3129 -79.5256 -76.7369 -73.9475
>> -71.1577 -68.3678 -65.5776 -62.7873 -59.997 -57.2066 -54.4162 -51.6257
>> -48.8352 -46.0447 -43.2542 -40.4636 -37.6731 -34.8825 -32.0919 -29.3014
>> -26.5108 -23.7202 -20.9296 -18.139 -15.3484 -12.5578 -9.76715 -6.97653
>> -4.18592 -1.39531 1.39531 4.18592 6.97653 9.76715 12.5578 15.3484 18.139
>> 20.9296 23.7202 26.5108 29.3014 32.0919 34.8825 37.6731 40.4636 43.2542
>> 46.0447 48.8352 51.6257 54.4162 57.2066 59.997 62.7873 65.5776 68.3678
>> 71.1577 73.9475  76.7369 79.5256 82.3129 85.0965 87.8638
>> zdef 1 linear 1 1
>> tdef 252 linear JAN1979 1MO
>> vars  17
>> gz 0 33,100 generation of available potential energy
>>
>>
>> Cheers,
>>
>>
>>  José Augusto P. Veiga,
>>
>> ======================================
>> Universidade do Estado do Amazonas
>> Departamento de Meteorologia
>> Escola Superior de Tecnologia (EST)
>>
>> -----------------------------------------------------------------------------
>> Av. Darcy Vargas, 1200, Manaus-AM Brasil
>> Work phone:    (92) 3878 4333
>> Skype: veiga_j.a.p.
>>
>> -----------------------------------------------------------------------------
>> CV: http://lattes.cnpq.br/4027612512091565
>> URL:http://scientificmet.wordpress.com/
>> http://nmet.wordpress.com/
>>
>> -----------------------------------------------------------------------------
>>
>>
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>> http://gradsusr.org/mailman/listinfo/gradsusr
>>
>>
>
>
> --
> Jeff Duda
> Graduate research assistant
> University of Oklahoma School of Meteorology
> Center for Analysis and Prediction of Storms
>
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>

-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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