各位大神，遇到如下问题data如图
目的：想把MAX_DPD 大于等于60的命名为target中的1，其他为0
代码和结果如下，请问，如何修改

if(data2$`part2$MAX_DPD` >= 60) data2$target <- 1 else data2$target <- 0
Error in if (data2$`part2$MAX_DPD` >= 60) data2$target <- 1 else data2$target <- 0 :
  missing value where TRUE/FALSE needed
In addition: Warning message:
In if (data2$`part2$MAX_DPD` >= 60) data2$target <- 1 else data2$target <- 0 :
  the condition has length > 1 and only the first element will be used