Ok, this run correctly.

Now i want to perform much more conditions, i.e.:

tmp$PRODUCTS[tmp$PRODUCTS > 70] <- NA

and

tmp$PRODUCTS[tmp$PRODUCTS < 20] <- NA.

How can i perform this double condition in the same code?


2007/3/26, Benilton Carvalho <bcarvalh@jhsph.edu>:
>
> say your data frame is called "tmp"
>
> tmp$PRODUCTS[tmp$PRODUCTS > 70] <- NA
>
> b
>
> On Mar 26, 2007, at 12:31 PM, Sergio Della Franca wrote:
>
> > Dear R-Helpers,
> >
> > I want to substitute the contents of a variable under some contitions.
> >
> > I.e., I have this data set:
> >
> > YEAR   PRODUCTS
> > 1          80
> > 2          90
> > 3          50
> > 4          60
> > 5          30
> >
> > I want to perform this condition:
> > if products> 70 then products=NA else products=products.
> >
> > I'd like to achive the seguent result:
> >
> >  YEAR   PRODUCTS
> > 1          NA
> > 2          NA
> > 3          50
> > 4          60
> > 5          30
> > How can i develop this?
> >
> >
> > Thank you in advance.
> >
> >
> > Sergio Della Franca
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > 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
> > and provide commented, minimal, self-contained, reproducible code.
>

	[[alternative HTML version deleted]]

