Re: [R] problem with for()

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Thu 04 Aug 2005 - 07:43:22 EST

Hint: help.search() -> "An Introduction to R" -> "Simple manipulations numbers and vectors" -> ...

spencer graves

Peter Dalgaard wrote:

> Simone Gabbriellini <ogabbrie@tin.it> writes:
>
>

>>Dear list,
>>can someone tell me why this two pieces of code give me the same  
>>results?
>>
>> > for(i in 0:5){ sum[i] = i }
>> > sum
>>[1] 1 2 3 4 5
>>
>> > for(i in 1:5){ sum[i] = i }
>> > sum
>>[1] 1 2 3 4 5
>>
>>shouldn't the first one be
>>
>>0 1 2 3 4 5

>
>
> No. Indexing starts at 1 in R.
>
> Next, figure out this:
>
>
>>sum=0
>>for(i in 5:-5){ sum[i] = i }
>>sum

>
> [1] -5 -5 -5 -5 -4
>
>
-- 
Spencer Graves, PhD
Senior Development Engineer
PDF Solutions, Inc.
333 West San Carlos Street Suite 700
San Jose, CA 95110, USA

spencer.graves@pdf.com
www.pdf.com <http://www.pdf.com>
Tel:  408-938-4420
Fax: 408-280-7915

______________________________________________
R-help@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
Received on Thu Aug 04 07:47:49 2005

This archive was generated by hypermail 2.1.8 : Sun 23 Oct 2005 - 15:03:27 EST