If you data frame is called 'df'

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

-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22"
O<http://maps.google.com/maps?f=q&hl=en&q=Curitiba,+Brazil&layer=&ie=UTF8&z=18&ll=-25.448315,-49.276916&spn=0.002054,0.005407&t=k&om=1>

On 26/03/07, Sergio Della Franca <sergio.della.franca@gmail.com> 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
>
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>
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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