R help - Mar 2007 - math-operations

Hallo R-experts,

for a function I need to work with the commands "div" and
"mod" known
from Pascal and Ruby. The only help I know is "ceiling()" and
"floor()"
in R. Do "div" and "mod" exist? When yes please send me a
little
example.

In Pascal-Syntax I want: 
513 div 100 = 5
513 mod 100 = 13

How can I get this in R-syntax?

Thanks, Corinna

513 %/% 100

513 %% 100

check ?"%/%" for more info.


Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Schmitt, Corinna" <Corinna.Schmitt at igb.fraunhofer.de>
To: <r-help at stat.math.ethz.ch>
Sent: Friday, March 30, 2007 3:34 PM
Subject: [R] math-operations

> Hallo R-experts,
>
> for a function I need to work with the commands "div" and
"mod"
> known
> from Pascal and Ruby. The only help I know is "ceiling()" and 
> "floor()"
> in R. Do "div" and "mod" exist? When yes please send me
a little
> example.
>
> In Pascal-Syntax I want:
> 513 div 100 = 5
> 513 mod 100 = 13
>
> How can I get this in R-syntax?
>
> Thanks, Corinna
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> 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.
> 

Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm

On 3/30/2007 9:34 AM, Schmitt, Corinna wrote:
> Hallo R-experts,
> 
> for a function I need to work with the commands "div" and
"mod" known
> from Pascal and Ruby. The only help I know is "ceiling()" and
"floor()"
> in R. Do "div" and "mod" exist? When yes please send me
a little
> example.
> 
> In Pascal-Syntax I want: 
> 513 div 100 = 5
> 513 mod 100 = 13
> 
> How can I get this in R-syntax?
div is %/% and mod is %%.  These (and the other arithmetic operators in 
R) are described in the ?Arithmetic help topic.  The full list of all 
operators is in the "R Language Definition" manual, near the start of 
the "Evaluation of expressions" chapter.

Duncan Murdoch

On Friday 30 March 2007 14:34, Schmitt, Corinna wrote:
> Hallo R-experts,
>
> for a function I need to work with the commands "div" and
"mod" known
> from Pascal and Ruby. The only help I know is "ceiling()" and
"floor()"
> in R. Do "div" and "mod" exist? When yes please send me
a little
> example.
>
> In Pascal-Syntax I want:
> 513 div 100 = 5
trunc(513 / 5)
> 513 mod 100 = 13
513 %% 100
>
> How can I get this in R-syntax?
>
> Thanks, Corinna
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> 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.
-- 
   Alberto G. Murta
IPIMAR - Portuguese Institute of Fisheries and Marine Research
Avenida de Brasilia s/n; 1449-006 Lisboa; Portugal
Tel: +351 213027120; Fax: +351 213015948; email: amurta at ipimar.pt

Dimitris Rizopoulos wrote:
>
> 513 %/% 100
> 
> 513 %% 100
>
Now this is a great opportunity to improve the R-Wiki.

What about a "Pascal" page in the R-Wiki, where a list
of Pascal-to-R translations would be available?

Alberto Monteiro