Convert negativ number to 0

mydf[mydf < 0] <- 0

or

mydf$A[mydf$A < 0] <- 0

depending on what exactly you want.

Note: this is the kind of operation for which there are many possible
equivalent solutions, and many tweaks possible depending on how you
want to deal with NA value, etc.

Sarah

Hallo together,

i have a data.frame like this one.
      A
1    3
2    -2
3    1

and now i want to convert the negative number to 0.

      A
1    3
2    0
3    1

How can i do this?

Thanks.
Mat

--
Sarah Goslee
http://www.functionaldiversity.org