R loop

Hi

you are correct as usually. It is about 10 versions 1.2.0 - 2.2.1 and 
as there are 2 versions per year it is about 4-5 years.

But nevertheless it seems to me as if I used R forever (and hopefully 
it will continue)

Anyway subsetting data frames **was** similar in the old versions as 
it is now, wasn't it?

Cheers
Petr

On 7 Feb 2006 at 8:56, Uwe Ligges wrote:

Date sent:      	Tue, 07 Feb 2006 08:56:10 +0100
From:           	Uwe Ligges <ligges at statistik.uni-dortmund.de>
Organization:   	Fachbereich Statistik, Universitaet Dortmund
To:             	Petr Pikal <petr.pikal at precheza.cz>
Copies to:      	r-help at stat.math.ethz.ch, ivo welch <ivowel at gmail.com>
Subject:        	Re: [R] R loop

Petr Pikal wrote:

Hi

On 6 Feb 2006 at 15:57, ivo welch wrote:

Date sent:      	Mon, 6 Feb 2006 15:57:30 -0500
From:           	ivo welch <ivowel at gmail.com>
To:             	Sean Davis <sdavis2 at mail.nih.gov>
Copies to:      	piet.vanremortel at gmail.com, r-help
<r-help at stat.math.ethz.ch> Subject:        	Re: [R] R loop

data[ data$a == "name2" ]  # does not work and gives a weird
result,  yuck

data[data$a=="name2",]

sorry about this.  I believe a few versions back, one could not
subset data frames, so I did not even check what I wrote.  Works
now.

It depends on what you consider few versions back. I started with R
vesion 1.2.0 about 10 years 

I bet 200$ (or EUR) you have not used R 10 years ago. ;-)

People certainly remember the 1.0.0 release at the remarkable day
29-FEB-2000. 1.2.0 was released in December 2000, about 5 years ago. I
started with 0.62.x in 1998. The oldest version I found on CRAN is a
pre-alpha R.sea.hqx for the Mac 
              dated 07-Nov-1996.


Uwe Ligges

ago and I believe that data frame 
subsetting was done in **very** similar manner as it is performed
now.

Cheers
Petr

Look at ?order.

I know.  This is why I suggested only that we need a wrapper that
plugs an order() functionality into the sort() function (which
fortunately points in its docs to order)---but novices would find
the sort syntax easier.

regards,

/iaw

Petr Pikal
petr.pikal at precheza.cz

Petr Pikal
petr.pikal at precheza.cz