[R] Re: conditional assignment

[uaca@alumni.uv.es]

Hi all again

I could not reply before because I was/am very busy

ifthenelse() is what I wanted, I have to read more carefully your
explanations to better understand it

Thanks everybody

	Ulisses
	


On Mon, Jan 26, 2004 at 08:15:51PM +0100, uaca at alumni.uv.es wrote:
> 
> Hi all
> 
> I want to conditionally operate on certain elements of a matrix, let me
> explain it with a simple vector example
> 
> 
> > z<- c(1, 2, 3)
> > zz <- c(0,0,0)
> > null <- (z > 2) & ( zz <- z)
> > zz
> [1] 1 2 3
> 
> why zz is not (0, 0, 3) ?????
> 
> 
> the null <- assignment is to keep the console silent
> 
> in the other hand, it curious that null has reasonable values
> 
> > null
> [1] FALSE FALSE  TRUE
> 
> Thanks in advance
> 
> 	Ulisses
> 
>                 Debian GNU/Linux: a dream come true
> -----------------------------------------------------------------------------
> "Computers are useless. They can only give answers."            Pablo Picasso
> 
> Humans are slow, innaccurate, and brilliant.
> Computers are fast, acurrate, and dumb. 
> Together they are unbeatable
> 
> --->	Visita http://www.valux.org/ para saber acerca de la	<---
> --->	Asociación Valenciana de Usuarios de Linux		<---
>  

-- 
                Debian GNU/Linux: a dream come true
-----------------------------------------------------------------------------
"Computers are useless. They can only give answers."            Pablo Picasso

Humans are slow, innaccurate, and brilliant.
Computers are fast, acurrate, and dumb. 
Together they are unbeatable

--->	Visita http://www.valux.org/ para saber acerca de la	<---
--->	Asociación Valenciana de Usuarios de Linux		<---