Re: R.pl hangs in debian linux

Good Day Nicos,

My apologies for a late response. I tried pack(real). This was the  
error message I got.

ERROR: /usr/local/lib/swipl-6.5.2/pack/real/prolog/real.pl:1086:
	'$open_shared_object'/3: libR.so: cannot open shared object file: No  
such file or directory
Warning: /usr/local/lib/swipl-6.5.2/pack/real/prolog/real.pl:1086:
	Goal (directive) failed: real:initialization(start_r,now)

But I got R.pl to work. If I am understanding correctly the main  
difference between R.pl and real.pl is real.pl can interchange data  
between the two programs? Whereas, R.pl is more like a wrapper call  
around R to manipulate data?

Thank you again for your help.

Best Regards,


Bob Ly




Quoting "Nicos Angelopoulos" <[email protected]>:

>
> Dear Bob,
>
>
> On Wed, 06 Nov 2013 22:14:53 -0600
> "Bob Ly" <[email protected]> wrote:
>
>> So I've been trying the R package from Swipl Git, but the example
>> given in the package just hangs.
>>
>
> 	it looks like R.pl hangs on waiting input from the R executable,
> 	as R.pl has n't changed in a long while (not by me at any rate),
> 	it is likely that recent R versions spew out things differently to  
> how older versions did.
>         the mode of operation of R.pl is that it starts an R process  
> as a slave
>         reading/writing from/to it via the io streams.
>
> 	I think R.pl should come with a warning that there is a more
> 	modern package available.
>
> 	are you aware of pack(real) ?
>
> 	you can install with
>
> 	?- pack_install( real ).
>
> 	?- pack_rebuild( real ).
>
>         test with
>
>          ?- [pack(real/examples/for_real)].
>          ?- edit( pack(real/examples/for_real) ).
>          ?- for_real.
>
>
> See
> http://www.swi-prolog.org/pack/list?p=real
> &
> http://stoics.org.uk/~nicos/sware/real/
>
>
> Hope it helps,
>
> Nicos Angelopoulos
> ---
> http://stoics.org.uk/~nicos
>
>