R : 如何使用 paste0 和 gsub 将向量与字符连接起来?

Question

我想用 2 个字符"0">和"m">连接我的向量n。

n=c(18,8,13,24,76,81,96,95)

我试过了：

paste0("m", gsub(" ", "0", format(n)))
[1] "m18" "m08" "m13" "m24" "m76" "m81" "m96" "m95"

预期结果：

[1] "m018" "m008" "m013" "m024" "m076" "m081" "m096" "m095"

Answer 1

您可以使用 sprintf：

n=c(18,8,13,24,76,81,96,95)
paste0("m" , sprintf("%03d",n))
# "m018" "m008" "m013" "m024" "m076" "m081" "m096" "m095"

或者干脆

sprintf("m%03d",n)