Exporting data from Grads to excel
hersala
hersala at GMAIL.COM
Thu Jan 14 09:35:30 EST 2010
Hi Tononi:
To obtain ASCII files from GrADS I usually use the script
fprintf.gs
you will found it here:
http://cookbooks.opengrads.org/index.php?title=Recipe-002:_Saving_GrADS_variable_data_to_a_text_file
Cheers,
Hernán
2010/1/14 Daniele Gandini <daniele.gandini at arpa.piemonte.it>
> Dear Davide,
>
> I haven't used 'set gxout print' until now;
> but to have the output in a file with 'set gxout stat' I did so:
>
> outfile="/pub/file_to_pc/cnal.txt"
> 'set gxout stat'
>
> # Alessandria
> 'set lat 44.94'
> 'set lon 8.7'
> 'd rh'
> statstr=sublin(result,8)
> vmin=subwrd(statstr,4)
> vmax=subwrd(statstr,5)
> write(outfile,'Alessandria: minima:'round(vmin)'
> massima:'round(vmax),append)
>
> if, else and endif must be without superscripts ''; for example
>
> if (flagstampe=yes)
> var='st_'%var
> endif
>
> Saluti a Firenze.
>
> Daniele
>
>
> ----- Messaggio originale -----
> Da: "Tononi Davide" <Ext-Davide.Tononi at VTT.FI>
> A: GRADSUSR at LIST.CINECA.IT
> Inviato: Giovedì, 14 gennaio 2010 8:31:39 GMT +01:00
> Amsterdam/Berlino/Berna/Roma/Stoccolma/Vienna
> Oggetto: Exporting data from Grads to excel
>
>
> Dear users.
> I need to export some data reconrd from grads to excel file but i'm not
> able to do this.
> I have written this command line but doesn't work.
> Say that there is a problems on this command:
>
> 'display rh2m'
> filename='test.xls'
> 'set gxout print'
> 'd rh2m'
> 'rc=(test.xls,rh2m)'
>
> That i've written to export.
> Some of you can suggest to me how can i export the value of this variable
> rh2m.
> Another question it's about the command IF that in my programme doesn't
> work.
> I write some like this but says that it is not correct unknow command:
>
> 'if (t2m>273.15)'
> 'define eps1=exp((-6763.6/t2m)-4.9283*log(t2m)+54.23)'
> 'else'
> 'define eps1=exp((-6141/t2m)+24.3)'
> 'endif'
>
> Thank you so much
> davide
>
>
> * Statistics on 2m air temperature and relative humidity in Europe from
> * 1/1/1999 to 31/12/2008
> * The source data are ECMWF ERA Interim Reanalysis, provided by the
> European
> * Centre for Medium-Range Weather Forecast, in grib format, with spatial
> * resolution of 1,5deg x 1,5deg lat/lon, and temporal resolution of 6h
> (data
> * at 00, 06, 12, 18 UTC)
> * There are 49x28 grid points (LON from -27 to 45, LAT from 33 to 73.5),
> and
> * 14612 time steps
>
> 'reinit'
> 'open temperature_Europe_10y.ctl'
> 'set grads off'
> 'set t 1 14612'
> 'define t2m=no2tsfc.1'
>
> 'set t 1 1461'
> 'set lat 45'
> 'set lon 23'
> 'draw title 2mT at lat45 lon23'
> 'draw ylab 2m Temperature'
> 'set ccolor 2'
> 'set cmark 0'
> *'display (t2m-273.15)'
> *'set fwrite t2m_lat45_lon23.gif'
> *'printim t2m_lat45_lon23.gif white gif'
>
> 'open dptemperature_Europe_10y.ctl'
> 'set t 1 1461'
> 'define tdp2m=no2dsfc.2'
>
> *Calculation of saturated pressure of water vapour
>
> 'define eps1=exp((-6763.6/t2m)-4.9283*log(t2m)+54.23)'
>
> *Calculation of water vapour pressure
>
> 'define eps2=exp((-6763.6/tdp2m)-4.9283*log(tdp2m)+54.23)'
>
> *Calculation of relative humidity
>
> 'define rh2m=eps2/eps1'
> 'display rh2m'
> filename='test.xls'
> 'set gxout print'
> 'd rh2m'
> 'rc=(test.xls,rh2m)'
>
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