Damien,
You don't give an example of what your data frame looks like or what you
want the new column to look like (given that example data), but I created
an example data frame for z, and wrote a few lines of code to add a new
column. Check it out and see if it comes close to doing what you want.
Dear R-helper,
I am working on a very large data frame and I am trying to add a new column
and write in it with certain conditions. I have try to use this code with
the data frame p :
ID = 0
p[,"newColumn"]<-
ifelse (p$flagFoehn3_durr == 1,
ifelse(p$Guetsch == 0,
ID <<- I
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