[R] Converting character to function argument
Spencer Graves
spencer.graves at pdf.com
Fri Sep 12 19:21:44 CEST 2003
Have you considered
eval(parse(text="expand.grid(c(1,0),c(1,0))"))
There are other ways to get what you want, but this should work.
hope this helps. spencer graves
Alvaro.Antonio.Novo at bportugal.pt wrote:
> How can one transform a character string into an argument of a function
> (which is not or I don't want it to be a character string)?
>
> Example:
>
>
>>expand.grid(c(1,0),c(1,0)) ## OK
>
> Var1 Var2
> 1 1 1
> 2 0 1
> 3 1 0
> 4 0 0
>
>
>
>>paste(rep("c(0,1)",2),collapse=',') ## to be used below
>
> [1] "c(0,1),c(0,1)"
>
>>## string is the input I want, but it needs to be coerced to the correct
>
> format
>
>
>>expand.grid(paste(rep("c(0,1)",2),collapse=',')) ## does not get me there
>
> Var1
> 1 c(0,1),c(0,1)
>
> ***************************************************************************
> AVISO DE CONFIDENCIALIDADE: Esta mensagem, assim como os ficheiros
> eventualmente anexos, é confidencial e reservada apenas ao conhecimento
> da(s) pessoa(s) nela indicada(s) como destinatária(s). Se não é o seu
> destinatário, solicitamos que não faça qualquer uso do respectivo conteúdo
> e proceda à sua destruição, notificando o remetente.
> LIMITAÇÃO DE RESPONSABILIDADE: A segurança da transmissão de informação
> por via electrónica não pode ser garantida pelo remetente, o qual, em
> consequência, não se responsabiliza por qualquer facto susceptível de
> afectar a sua integridade.
>
> CONFIDENTIALITY NOTICE: This message, as well as existing attached files,
> is confidential and intended exclusively for the individual(s) named as
> addressees. If you are not the intended recipient, you are kindly requested
> not to make any use whatsoever of its contents and to proceed to the
> destruction of the message, thereby notifying the sender.
> DISCLAIMER: The sender of this message can not ensure the security of its
> electronical transmission and consequently does not accept liability for
> any fact which may interfere with the integrity of its content.
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
More information about the R-help
mailing list