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我正在尝试制作一个分面条形图，每个方面代表一个就业部门，每个显示三个时间点。

这是我的代码和示例数据

Year <- c("2002", "2010", "2012", "2002", "2010", "2012", "2002", "2010", "2012")
Year <- ordered(Year, levels = c("2002", "2010", "2012"))
Sector <- c("Production", "Processing", "Distribution", "Production", "Processing", "Distribution",
        "Production", "Processing", "Distribution")
Sector <- ordered(Sector, levels = c("Production", "Processing", "Distribution"))
Avg.Emp <- c(363, 4458, 2962, 225, 4767, 3552, 148, 5137, 3996)

df <- data.frame(Year, Sector, Avg.Emp)

检查数据类型时，一切都会检查出来。我的因素排序正确，我的就业数据与其适当的因素一致。但是，当我尝试使用 ggplot 时，我遇到了一个问题。ggplot 代码：

library(ggplot2)
library(scales)
sampleplot <- ggplot(df, aes(x=Year, y=Avg.Emp)) + geom_bar(stat = "identity") + 
facet_wrap(~Sector) + ylim(0,5200)

我得到的图只在各个方面显示了每年的一个值。我在哪里犯错？（我为缺乏形象道歉，我没有足够的声誉）无论如何我可以让我每年的价值观在适当的方面表现出来？

编辑 我意识到考虑到我制作数据框的方式，我每年只有一个部门。更新的语法在这里并解决了问题

Year <- c("2002", "2002", "2002", "2010", "2010","2010","2012","2012","2012")
Year <- ordered(Year, levels = c("2002", "2010", "2012"))
Sector <- c("Production", "Processing", "Distribution", "Production", "Processing", "Distribution",
        "Production", "Processing", "Distribution")
Sector <- ordered(Sector, levels = c("Production", "Processing", "Distribution"))
Avg.Emp <- c(363, 4458, 2962, 225, 4767, 3552, 148, 5137, 3996)

df <- data.frame(Year, Sector, Avg.Emp)

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