如何在r的一行数据框中找到正负计数

Question

I have a dataframe in r

      Loss1.       Loss2.         Loss3
     -456.             -2345.         -1290
       345.           -342.            234

I want to calculate how many times positive and negative value occurs in a row. Expected output is as follows

      Loss1.      Loss2.      Loss3.   Neg_count.  Pos_count
      -456.       -2345.      -1290.        3.                  0
       345.         -342.          234.         1                  2

I tried with rowsums,but it gives me sum of rows. How can I do it in r?

Answer 1

The code below should work:

dat <- data.frame(Loss1=c(-456,345),Loss2=c(-2345,-342),Loss3=c(-1290,234))
dat$Neg_Count <- rowSums(dat[,c("Loss1","Loss2","Loss3")]<0)
dat$Pos_Count <- rowSums(dat[,c("Loss1","Loss2","Loss3")]>0)
dat
 Loss1 Loss2 Loss3 Neg_Count Pos_Count
1  -456 -2345 -1290         3         0
2   345  -342   234         1         2