[gradsusr] Problems with plotting

[Eric Altshuler]

Dear Jose, 


Looking at the contour values, it seems like you have the wrong undef value. Try using: 


undef -9.99e8 


See if that helps. 


Best regards, 


Eric L. Altshuler 
Research Scientist 
Center for Ocean-Land-Atmosphere Studies 
253 Research Hall, Mail Stop 6C5 
George Mason University 
4400 University Drive 
Fairfax, VA 22030 USA 

E-mail: ela at cola.iges.org 
Phone: (703) 993-5725 
Fax: (703) 993-5770 

----- Original Message -----
From: "Jose Augusto Paixão Veiga" <veiga.uea at gmail.com> 
To: "GrADS Users Forum" <gradsusr at gradsusr.org> 
Sent: Wednesday, January 29, 2014 9:32:00 PM 
Subject: [gradsusr] Problems with plotting 


Dear users of GrAds, 


I am facing problems to plot rainfall data extracted from CPC source. 


As I use fortran programs to deal with some specific calculations sometimes I need to extract data from some source and record it in a bin file to be read in my fortran programs. 


This time, after I'd selected rainfall data from a CPC ctl I get some problems to visualise the data. The figure is attached. I believe I have to include some specific option in OPTIONS of my CTL. 


Helps and suggestions will be very appreciative. 


Thanks 




My CTL file is: 



dset prec-cpc-1980-2000.bin 
title global daily analysis (grid box mean, the grid shown is the center of the grid box) 
options little_endian 
undef -999.0 
xdef 720 linear 0.25 0.50 
ydef 360 linear -89.75 0.50 
zdef 1 linear 1 1 
tdef 12 linear 01jan1979 1dy 
vars 1 
rain 1 00 the grid analysis (0.1mm/day) 
ENDVARS 


The original CTL were I had extracted the data is: 



dset %y4/PRCP_CU_GAUGE_V1.0GLB_0.50deg.lnx.%y4%m2%d2 
title global daily analysis (grid box mean, the grid shown is the center of the grid box) 
options little_endian template 
undef -999.0 
xdef 720 linear 0.25 0.50 
ydef 360 linear -89.75 0.50 
zdef 1 linear 1 1 
tdef 12419 linear 01jan1979 1dy 
vars 2 
rain 1 00 the grid analysis (0.1mm/day) 
gnum 1 00 the number of stn 
ENDVARS 






José Augusto P. Veiga, 

====================================== 
Coordenador do curso de Meteorologia da UEA 
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, Ramal 4333 
Cell phone : (92) 8196 7122 
Skype: veiga_j.a.p. 

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