在R中从数据表制作直方图

Question

I have a variable say a which has data as

Count |  Value
2 | Apple
5 | Ball
6 | Cat
10 | Dog

我想绘制一个柱状图，将数值放在x轴上，计数放在y轴上。不知道该怎么做。

- ashwin shrestha

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我猜你需要一个条形图。 - akrun

Answer 1

我们可以使用 barplot。

barplot(setNames(df1$Count, df1$Value))

数据

df1 <- structure(list(Count = c(2, 5, 6, 10), Value = c("Apple", "Ball",  
"Cat", "Dog")), .Names = c("Count", "Value"), class = "data.frame",
 row.names = c(NA, -4L))

- akrun