function int

[Angel Dimitrov]

 Dear Tetsuo Nakazawa,

 Do you have any weather text books for education (pdf format?) to print and read. The AMS journals are for advanced readers - a very good source to get the latest advances. The Google books are great, well, not very easy to print, not all pages are included.

 Thank you for any help.

 Best regards,

 Angel Dimitrov
 http://www.stormlab.net

--- On Thu, 6/4/09, Tetsuo Nakazawa <nakazawa at MRI-JMA.GO.JP> wrote:

> From: Tetsuo Nakazawa <nakazawa at MRI-JMA.GO.JP>
> Subject: function int
> To: GRADSUSR at LIST.CINECA.IT
> Date: Thursday, June 4, 2009, 9:41 AM
> Dear GrADS users,
>
>  I tried to use the function of int (truncate the real
> number to
> integer),
> but an error came when I used opengrads 2.0.a5.oga.5 for
> Mac OSX.
>
>  The script and the anal_p.ctl are as follows
>
> 'open anal_p.ctl'
> 'set lon 30 180'
> 'set lat -40 40'
> 'i0=ugrdsfc*2.+1.'
> 'd i0'
> 'd int(i0)'
>
>  It worked fine to "d i0", but when I did "d int(i0)",
> then
> the following error message came.
>
> Syntax Error:  Invalid Operand
>   'int' not a variable or function name
>   Error ocurred at column 1
> DISPLAY error:  Invalid expression
>   Expression = int(i0)
>
>
> function int(i0)
>   i=0
>   while(i<12)
>     i=i+1
>     if(substr(i0,i,1)='.')
>       i0=substr(i0,1,i-1)
>       break
>     endif
>   endwhile
> return(i0)
>
>
> * content of anal_p.ctl
>
> dset ^anal_p.%y4%m2%d2%h2
> index ^anal_p.idx
> undef 9.999E+20
> title grib.anal_p
> dtype grib 255
> options yrev template
> ydef  145  linear  -90.0  1.25
> xdef  288  linear    0.0  1.25
> tdef 124 linear 00Z01jan1979 6hr
> zdef 23  levels
> 1000 925 850 700 600 500 400 300 250 200 150 100 70 50 30
> 20 10 7 5 3
> 2 1 0.4
> vars 13
> HGTprs   23 7,100,0   **
> Geopotential height
> [gpm]
> TMPprs   23 11,100,0  ** Air
> temperature
>     [K]
> SPFHprs  23 51,100,0  ** Specific humidity
>           [kg/kg]
> DEPRprs   8 18,100,0  ** Dew point
> depression
>    [K]
> UGRDprs  23 33,100,0  ** Zonal wind
>
>    [m/s]
> VGRDprs  23 34,100,0  ** Meridional wind
>               [m/s]
> CWATprs  12 76,100,0  ** Cloud water
> content         [kg/m^2]
> PRMSLmsl  0 2,102,0   ** Pressure
> reduced to MSL         [Pa]
> TMPsfc    0 11,105,2  ** Surface 2m air
> temperature       [K]
> SPFHsfc   0 51,105,2  ** Surface 2m
> specific humidity [kg/kg]
> DEPRsfc   0 18,105,2  ** Surface 2m dew
> point depression  [K]
> UGRDsfc   0 33,105,10 ** Surface 10m zonal
> wind         [m/s]
> VGRDsfc   0 34,105,10 ** Surface 10m
> meridional wind    [m/s]
> ENDVARS
>
>
>
> ********************************************
> Tetsuo Nakazawa
>
>       nakazawa at mri-jma.go.jp
> Typhoon Research Department
> Meteorological Research Institute
> Tel:  029-853-8671 Fax: 029-853-8735
> ********************************************
>