[R] decimal number format as quarter

[Arnaud Gaboury]

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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-- 
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.