如何从另一个文件连接react组件？

Question

我正在尝试将我的组件连接到页面。 我这样做。

library(ggplot2) #load the ggplot2 graph package
data = data.frame(data) #make the dataset a R dataframe object
head(data,2) #just showing part of the data here.

 USER.ID avgfrequency orders group
       3     3.782178    101     3
       7    14.750000      8     3

#build graph
ggplot(data, aes(x=avgfrequency,fill=factor(group))) + 
  geom_histogram(breaks=seq(0,200,by=10),colour='black') + 
  xlab("Average Frequency") + ylab("Count of USER.ID") +
  scale_fill_manual("Group", breaks = c("1","2","3"), values = c("grey30","grey50", "grey70")) +
  theme_bw()

但是我收到错误未捕获的ReferenceError：列表未定义 我该如何解决？