如何在R中的单个字符串中打印矢量的所有元素？

Question

有时我想在一个字符串中打印矢量中的所有元素,但它仍然分别打印元素:

notes <- c("do","re","mi")
print(paste("The first three notes are: ", notes,sep="\t"))

这使:

[1] "The first three notes are: \tdo" "The first three notes are: \tre"
[3] "The first three notes are: \tmi"

我真正想要的是:

The first three notes are:      do      re      mi

Answer 1

最简单的方法可能是使用一个函数组合您的消息和数据c:

paste(c("The first three notes are: ", notes), collapse=" ")
### [1] "The first three notes are:  do re mi"

Answer 2

该cat功能既CON猫enates向量的元素，并将它们打印：

cat("The first three notes are: ", notes,"\n",sep="\t")

这使：

The first three notes are:      do      re      mi

该sep参数允许您指定一个分隔字符（例如此处\t用于制表符）。此外，\n如果您之后有任何其他输出或命令提示符，也建议在末尾添加换行符（即）。