[Gretl-devel] Backward compatibility

[Ignacio Diaz-Emparanza]

> In CVS and Windows snapshot you can do the following (revised
> version of Ignacio's sample script):
>
> <script>
> function sillyfun (string foo, series x)
>   series @foo_f1 = x+x(-1)+x(-2)+x(-3)
>   series @foo_f2 = x+x(+1)
>   list outlist = @foo_f1 @foo_f2
>   return list outlist
> end function
>
> open data9-9
> string sname="nocars"
> list alist = sillyfun(sname, nocars)
> print alist
> </script>
>
> Alternatively, you could give the string argument to sillyfun as a
> quoted string literal:
>
> list alist = sillyfun("nocars", nocars)

I just downloaded gretl from CVS and the script does not work (In Kubuntu 
Linux). The output I obtain is 

gretl version 1.6.6.pre2
Current session: 2007/11/07 10:00
? function sillyfun(string foo, series x)
>   series @foo_f1 = x+x(-1)+x(-2)+x(-3)
>   series @foo_f2 = x+x(+1)
>   list outlist = @foo_f1 @foo_f2
>   return list outlist
> end function
? open data9-9

Read datafile /opt/gretl/share/gretl/data/data9-9.gdt
periodicity: 4, maxobs: 60,
observations range: 1976:1-1990:4

Listing 7 variables:
  0) const      1) nocars     2) pop        3) Y          4) price    
  5) primert    6) unemp    

? string sname="nocars"
Saved string as 'sname'
? list alist = sillyfun(sname, nocars)
Data types not conformable for operation

Error executing script: halting
> list alist = sillyfun(sname, nocars)


-- 
Ignacio Diaz-Emparanza  
DEPARTAMENTO DE ECONOMÍA APLICADA III (ECONOMETRÍA Y ESTADÍSTICA)                                        
UPV/EHU
Avda. Lehendakari Aguirre, 83 | 48015 BILBAO
T.: +34 946013732 | F.: +34 946013754
www.et.bs.ehu.es