[R] Decrete value check in a matrix

John Kane jrkrideau at inbox.com
Mon Jul 2 15:53:20 CEST 2012


Glad it works.  So far we seem to have at least three ways to do it.  R is amazing!

John Kane
Kingston ON Canada


> -----Original Message-----
> From: antony.akkara at ge.com
> Sent: Mon, 2 Jul 2012 06:04:03 -0700 (PDT)
> To: r-help at r-project.org
> Subject: Re: [R] Decrete value check in a matrix
> 
> Good. Its working fine.
> 
> Thank you John !
> 
> 
> 
> From: John Kane [via R]
> [mailto:ml-node+s789695n4635113h41 at n4.nabble.com]
> Sent: Monday, July 02, 2012 6:18 PM
> To: Akkara, Antony (GE Energy, Non-GE)
> Subject: Re: Decrete value check in a matrix
> 
> 
> 
> You are not asking for a Decrete [sic]  (descrete) value check but
> rather if the numbers are intergers.
> 
> Try this:
> 
> # from the ?is.integer help page
> is.wholenumber <-
>     function(x, tol = .Machine$double.eps^0.5)  abs(x - round(x)) < tol
> 
> 
> aa  <- data.frame( na = c( 1, 3.4, 5, 5.6), nb = c(2.4, 4, 6, 6.7))
> ww  <- data.frame(  is.wholenumber(aa))
> cbind(aa, ww)
> 
> John Kane
> Kingston ON Canada
> 
> 
>> -----Original Message-----
>> From: [hidden email]
>> Sent: Mon, 2 Jul 2012 03:04:48 -0700 (PDT)
>> To: [hidden email]
>> Subject: [R] Decrete value check in a matrix
>> 
>> Hi All,
>> 
>> Here i have an Dataframe (or) Matrix like this,
>> 
>> MyMatrix <-
>> ABC          XYZ
>> ------        -------
>> 1              2.5
>> 3.4           4
>> 5              6
>> 5.6          6.7
>> 
>> Here i need to check each column value having decrete value or not ?.
>> If that particular coulmn-value having decrete value, then the result
>> should
>> be
>> TRUE/FALSE respectively in the result column.
>> Finally, i need to get the result as  Dataframe (or) Matrix form like
>> this
>> 
>> ABC          XYZ      ABC_RESULT               XYZ_RESULT
>> ------        -------     --------------------
>> --------------------
>> 1              2.5                 TRUE                       FALSE
>> 3.4           4                    FALSE                     TRUE
>> 5              6                    TRUE                        TRUE
>> 5.6          6.7                  FALSE                     FALSE
>> 
>> - Can any one help me fast ?
>> 
>> Antony.
>> 
> 
> 
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