如何在R中的数据框中添加一行？ [英] How can a add a row to a data frame in R?

问题描述

在R中，一旦数据帧已经初始化，如何在数据帧中添加新行？

In R, how do you add a new row to a data frame once the data frame has already been initialized?

到目前为止，我有这个内容：

So far I have this:

df <- data.frame("hi", "bye")
names(df) <- c("hello", "goodbye")

#I am trying to add "hola" and "ciao" as a new row
de <- data.frame("hola", "ciao")

merge(df, de) # Adds to the same row as new columns

# Unfortunately, I couldn't find an rbind() solution that wouldn't give me an error

任何帮助将不胜感激

推荐答案

就像@Khashaa和@Richard Scriven在注释中指出的那样，您必须为要附加的所有数据帧设置一致的列名。

Like @Khashaa and @Richard Scriven point out in comments, you have to set consistent column names for all the data frames you want to append.

因此，您需要显式声明第二个数据框的列名称 de ，然后使用 rbind（）。您只需设置第一个数据框的列名称 df ：

Hence, you need to explicitly declare the columns names for the second data frame, de, then use rbind(). You only set column names for the first data frame, df:

df<-data.frame("hi","bye")
names(df)<-c("hello","goodbye")

de<-data.frame("hola","ciao")
names(de)<-c("hello","goodbye")

newdf <- rbind(df, de)

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