R help - Mar 2022 - Is there a Truth Table Generator in R?

Please keep the list included in the thread using reply-all...

tt[,3:1] reverses the columns in tt. The expand.grid function cycles through
possible values most quickly in the first column, which is useful if you intend
to convert the result to a matrix, but is not conventional for truth tables.

Here is a generalized version for any sequence of legal R symbol labels nm:

both <- c( FALSE, TRUE )
nm <- letters[ 1:4 ]
tt <- rev( do.call( expand.grid, setNames( rep( list( both ), length( nm ) ),
rev( nm ) ) ) )
tt

or in R 4.1+...

tt <- (  list( both )
      |> rep( length( nm ) )
      |> setNames( rev( nm ) )
      |> ( \(.) do.call( expand.grid, . ) )()
      |> rev()
      )

On March 12, 2022 9:08:23 AM PST, Paul Bernal <paulbernal07 at gmail.com>
wrote:
>Dear Jeff,
>
>Thank you so much for your valuable feedback. at the end, in the command tt
><- [,3:1] what exactly does this do? If I wanted to create code to
>accomodate for any number of variables, how would I change that code?
>
>Best regards,
>Paul
>
>El s?b, 12 mar 2022 a las 12:04, Jeff Newmiller (<jdnewmil at
dcn.davis.ca.us>)
>escribi?:
>
>> both <- c( FALSE, TRUE )
>> tt <- expand.grid( C = both
>>                  , B = both
>>                  , A = both
>>                  )
>> tt <- tt[, 3:1 ]
>>
>> On March 12, 2022 8:42:28 AM PST, Paul Bernal <paulbernal07 at
gmail.com>
>> wrote:
>> >Dear friends,
>> >
>> >Hope you are doing great. I have been searching for a truth table
>> generator
>> >in R, but everything I find has a Python implementation instead.
>> >
>> >Maybe there is in fact a truth table generator in R, but I am not
>> searching
>> >in the right places?
>> >
>> >Any help and/or guidance will be greatly appreciated.
>> >
>> >Best regards,
>> >Paul
>> >
>> >       [[alternative HTML version deleted]]
>> >
>> >______________________________________________
>> >R-help at r-project.org mailing list -- To UNSUBSCRIBE and more,
see
>> >https://stat.ethz.ch/mailman/listinfo/r-help
>> >PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> >and provide commented, minimal, self-contained, reproducible code.
>>
>> --
>> Sent from my phone. Please excuse my brevity.
>>
-- 
Sent from my phone. Please excuse my brevity.

Dear Jeff,

Thank you so much for your extremely valuable feedback. I apologize for not
doing the reply all, forgot it.

Best regards,
Paul

El s?b, 12 mar 2022 a las 12:47, Jeff Newmiller (<jdnewmil at
dcn.davis.ca.us>)
escribi?:
> Please keep the list included in the thread using reply-all...
>
> tt[,3:1] reverses the columns in tt. The expand.grid function cycles
> through possible values most quickly in the first column, which is useful
> if you intend to convert the result to a matrix, but is not conventional
> for truth tables.
>
> Here is a generalized version for any sequence of legal R symbol labels nm:
>
> both <- c( FALSE, TRUE )
> nm <- letters[ 1:4 ]
> tt <- rev( do.call( expand.grid, setNames( rep( list( both ), length( nm
)
> ), rev( nm ) ) ) )
> tt
>
> or in R 4.1+...
>
> tt <- (  list( both )
>       |> rep( length( nm ) )
>       |> setNames( rev( nm ) )
>       |> ( \(.) do.call( expand.grid, . ) )()
>       |> rev()
>       )
>
> On March 12, 2022 9:08:23 AM PST, Paul Bernal <paulbernal07 at
gmail.com>
> wrote:
> >Dear Jeff,
> >
> >Thank you so much for your valuable feedback. at the end, in the
command
> tt
> ><- [,3:1] what exactly does this do? If I wanted to create code to
> >accomodate for any number of variables, how would I change that code?
> >
> >Best regards,
> >Paul
> >
> >El s?b, 12 mar 2022 a las 12:04, Jeff Newmiller (<
> jdnewmil at dcn.davis.ca.us>)
> >escribi?:
> >
> >> both <- c( FALSE, TRUE )
> >> tt <- expand.grid( C = both
> >>                  , B = both
> >>                  , A = both
> >>                  )
> >> tt <- tt[, 3:1 ]
> >>
> >> On March 12, 2022 8:42:28 AM PST, Paul Bernal <paulbernal07 at
gmail.com>
> >> wrote:
> >> >Dear friends,
> >> >
> >> >Hope you are doing great. I have been searching for a truth
table
> >> generator
> >> >in R, but everything I find has a Python implementation
instead.
> >> >
> >> >Maybe there is in fact a truth table generator in R, but I am
not
> >> searching
> >> >in the right places?
> >> >
> >> >Any help and/or guidance will be greatly appreciated.
> >> >
> >> >Best regards,
> >> >Paul
> >> >
> >> >       [[alternative HTML version deleted]]
> >> >
> >> >______________________________________________
> >> >R-help at r-project.org mailing list -- To UNSUBSCRIBE and
more, see
> >> >https://stat.ethz.ch/mailman/listinfo/r-help
> >> >PLEASE do read the posting guide
> >> http://www.R-project.org/posting-guide.html
> >> >and provide commented, minimal, self-contained, reproducible
code.
> >>
> >> --
> >> Sent from my phone. Please excuse my brevity.
> >>
>
> --
> Sent from my phone. Please excuse my brevity.
>
	[[alternative HTML version deleted]]