R如何根据其他列中的字符串值定义新列变量

这是一个重复的问题

如何从该数据帧实现：

Treatment = c("HS","C","H","S","TR")
BlockID = c(1,1,1,1,1)
PlotID = c(1,2,4,5,6)
Data = c(2003,2003,2003,2003,2003)

df = data.frame(Treatment,BlockID,PlotID,Data)

包含字符串值的新列：

New Column
HS12003
C12003
H12003
S12003
TR12003

我搞不懂如何对字符串求和。提前谢谢

您需要使用粘贴0

您可以使用do.call来计算paste0，即

df$pasted <- paste0(df$Treatment, df$BlockID, df$Data)

#   Treatment BlockID PlotID Data  pasted
# 1        HS       1      1 2003 HS12003
# 2         C       1      2 2003  C12003
# 3         H       1      4 2003  H12003
# 4         S       1      5 2003  S12003
# 5        TR       1      6 2003 TR12003

library(dplyr)
df %>% 
  mutate(pasted = paste0(Treatment, BlockID, Data))

do.call(paste0, df[-3])
#[1] "HS12003" "C12003"  "H12003"  "S12003"  "TR12003"