[gradsusr] Invalid Operand error while using script of temperature Inversion

[sushant puranik]

Jim thankful for suggestion. I put space between 'set z' z
But the error continues.

Sushant


On Thu, Apr 5, 2012 at 12:36 PM, James T. Potemra <jimp at hawaii.edu> wrote:

>  Sushant:
>
> In the line
> 'set z' z
> put a space between the quote and the first z, i.e.,
> 'set z 'z
>
> Jim
>
>
> On 4/4/12 9:02 PM, sushant puranik wrote:
>
> Hi
> I am trying to find the inversion layer with the help of following script
>
> 'reinit'
> 'sdfopen D:/ECMWF_Monthly_Mean_data/jun2010Temp.nc'
> 'clear'
> count = 1
> while (count <=120)
>   'clear'
>   'set grads off'
>   'set t 'count
>   'q time'
> date=subwrd(result,3)
> hour=substr(date,1,3)
> day=substr(date,4,2)
> month=substr(date,6,3)
> year=substr(date,9,10)
> date_str=hour' 'day'/'month'/'year
> *'set csmooth on'
> 'set lat 10'
> 'set lon 60'
> 'set map 1 1 6'
> 'set line 1 1 1'
> 'enable print temp'
> z = 1
> while (z <=12)
> 'set z' z
> lev=subwrd(result,4)
> 'define tmp1=t(z='z')'
> 'define tmp2=t(z='z+1')'
> 'define inver=tmp2-tmp1'
> 'd inver'
> inversion=subwrd(result,4)
> if inversion>0
> *  say "inversion in time  "tt " in level "lev
> res=write(hfile,'inversion in'  tt'  in level 'lev mb)
> endif
> z=z+1
> endwhile
> count = count + 4
> endwhile
> 'clear'
>
>
> But while running this script in GrADS it shows error message
>
>  SET error: Invalid operand
>   Operand = z1
> SET error: Invalid operand
>   Operand = z2
> SET error: Invalid operand
>   Operand = z3
> SET error: Invalid operand
>   Operand = z4
> SET error: Invalid operand
>   Operand = z5
> SET error: Invalid operand
>   Operand = z6
> SET error: Invalid operand
>   Operand = z7
> SET error: Invalid operand
>   Operand = z8
> SET error: Invalid operand
>   Operand = z9
> SET error: Invalid operand
>   Operand = z10
> SET error: Invalid operand
>   Operand = z11
> SET error: Invalid operand
>   Operand = z12
> Metafile already open
> SET error: Invalid operand
>   Operand = z1
> SET error: Invalid operand
>   Operand = z2
> SET error: Invalid operand
>   Operand = z3
> SET error: Invalid operand
>   Operand = z4
> SET error: Invalid operand
>   Operand = z5
> SET error: Invalid operand
>   Operand = z6
> SET error: Invalid operand
>   Operand = z7
> SET error: Invalid operand
>   Operand = z8
> SET error: Invalid operand
>   Operand = z9
> SET error: Invalid operand
>   Operand = z10
> SET error: Invalid operand
>   Operand = z11
> SET error: Invalid operand
>   Operand = z12
> ga->
>
>
> Anybody has suggestion over this issue?
>
> Thanks in advance
>
>
> Sushant
>
>
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