while calculating rowsum if both the column have values but getting error what i am doing wrong
df <- data.frame("T_1_1"= c(68,NA,0,105,NA,0,135,NA,24),
"T_1_2"=c(26,NA,0,73,NA,97,46,NA,0),
"T_1_3"=c(93,32,NA,103,NA,0,147,NA,139),
"S_2_1"=c(69,67,94,0,NA,136,NA,92,73),
"S_2_2"=c(87,67,NA,120,NA,122,0,NA,79),
"S_2_3"= c(150,0,NA,121,NA,78,109,NA,0),
"T_1_0"= c(79,0,0,NA,98,NA,15,NA,2)
)
df <- df %>% mutate(x1 = ifelse(is.na(T_1_1) & is.na(S_2_1),NA,rowSums(c(T_1_1,S_2_1),na.rm = TRUE)))
Error: Problem with `mutate()` input `x1`.
x 'x' must be an array of at least two dimensions
i Input `x1` is `ifelse(...)`.
output
| T_1_1 |
S_2_1 |
x1 |
| 68 |
69 |
137 |
| NA |
67 |
67 |
| 0 |
94 |
94 |
| 105 |
0 |
105 |
| NA |
NA |
NA |
| 0 |
136 |
136 |
| 135 |
NA |
135 |
| NA |
92 |
92 |
| 24 |
73 |
97 |