[R] decimal number format as quarter

[jim holtman]

Here is a shorter way:

> x <- c(2.2, 2.4, 2.6, 3.2, 3.4, 3.6)
> # get integer part
> x.i <- as.integer(x)
> # get fractional part
> x.f <- x %% 1
> result <- x.i + x.f * 1.25
> result
[1] 2.25 2.50 2.75 3.25 3.50 3.75
> as.integer(x) + (x %% 1) * 1.25
[1] 2.25 2.50 2.75 3.25 3.50 3.75
>

On Wed, Feb 8, 2012 at 9:44 AM, Arnaud Gaboury <arnaud.gaboury at a2ct2.com> wrote:
> TY Jim,
>
> It do the trick.
>
> I was trying to play without success with the format() options.
> No simplest way so?
>
> Arnaud Gaboury
>
> A2CT2 Ltd.
>
>
> -----Original Message-----
> From: jim holtman [mailto:jholtman at gmail.com]
> Sent: mercredi 8 février 2012 15:36
> To: Arnaud Gaboury
> Cc: r-help at r-project.org
> Subject: Re: [R] decimal number format as quarter
>
> will this do it for you:
>
>> x <- c(2.2, 2.4, 2.6, 3.2, 3.4, 3.6)
>> # get integer part
>> x.i <- as.integer(x)
>> # get fractional part
>> x.f <- (x * 10) %% 10
>> # new result
>> result <- x.i + ifelse(x.f == 2
> +                     , .25
> +                     , ifelse(x.f == 4
> +                         , .5
> +                         , .75
> +                         )
> +                     )
>> result
> [1] 2.25 2.50 2.75 3.25 3.50 3.75
>>
>>
>
> On Wed, Feb 8, 2012 at 9:12 AM, Arnaud Gaboury <arnaud.gaboury at a2ct2.com> wrote:
>> Hello,
>>
>> I have to deal with numbers with a decimal part as quarter, coming from two systems with different way to show decimals. I need to tell R these are in fact the same number.
>>
>> On one side my number are formatted this way : 2.2 , 2.4 and 2.6. On the other side, I have 2.25, 2.50 and 2.75.
>> All numbers are in fact 2.1/4, 2.1/2, 2.3/4.
>>
>> How can I tell R 2.2 is 2.25, 2.4 is 2.50 and 2.6 is 2.75 ?
>>
>> TY for any help.
>>
>> Arnaud Gaboury
>>
>> A2CT2 Ltd.
>>
>> ______________________________________________
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>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
> Jim Holtman
> Data Munger Guru
>
> What is the problem that you are trying to solve?
> Tell me what you want to do, not how you want to do it.
>



-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.