I know this could be simple, but I can't find the way to solve it. I want to recode a string variable (into the same variable), based on a condition of another variable, but I'm getting an error.
A working example:
VAR1<-c("SUC1","SUC2","SUC3","SUC4","SUC5","SUC6","SUC7","SUC8","SUC9","SUC10")
N<-c(356,415,34,1126,21,232,183,53,19,17)
df<-data.frame(VAR1,N)
df$VAR1[df$N<=30] <- "OTRO"
Then I received a Warning:
Warning message:
In `[<-.factor`(`*tmp*`, df$N <= 30, value = c(1L, 3L, 4L, 5L, NA, :
invalid factor level, NA generated
I know this is not an error, but when I look the result all the categories in VAR1 for wich the N value is below or equal to 30 are setting as NA
What am I doing wrong?
Another twist: If I get the data from aggregate I get the same error, let say:
agg1<-aggregate(VAR3~VAR1,df1,NROW)
and
df<-data.frame(agg1,stringAsFactor=FALSE)
the recode don't seem to work
Any clue?
尝试df<-data.frame(VAR1,N, stringsAsFactors=FALSE)
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