使用ggplot时保持原始顺序

Question

我有这个简单的代码，试图绘制图形。我的意图是按照我的方式绘制x轴，即与order_num相同：从1:10到10+。但是，ggplot改变了我的订单。我怎样才能保留原始顺序，我将它们放在数据框中。

    data_order=data.frame(order_num=as.factor(c(rep(1:10),"10+")),
    ratio=c(0.18223,0.1561,0.14177,0.1163,0.09646,
    0.07518,0.05699,0.04,0.0345,0.02668,0.006725))

    ggplot(data_order,aes(x=order_num,y=ratio))+geom_bar(stat = 'identity')

Answer 1

阅读数据：（注意删除as.factor，我们将在下一步中执行此操作。这不是强制性的！）

data_order=data.frame(order_num=c(rep(1:10),"10+"),
                      ratio=c(0.18223,0.1561,0.14177,0.1163,0.09646,
                              0.07518,0.05699,0.04,0.0345,0.02668,0.006725))

您需要使用数据框而不是ggplot。

data_order$order_num <- factor(data_order$order_num, levels = data_order$order_num)

更改级别后，它将按预期进行。

ggplot(data_order,aes(x=order_num,y=ratio))+geom_bar(stat = 'identity')