数据帧中的重新排序因子级别 [英] Re-ordering factor levels in data frame

问题描述

我有一个data.frame如下所示：

I have a data.frame as shown below:

task    measure
right   m1
left    m2
up      m3
down    m4
front   m5
back    m6
.
.
.

任务列只需要六个不同的值，这些值被视为因子，由R定为：back，down，front，left，right，up。

The task column takes only six different values, which are treated as factors, and are ordered by R as: "back", "down", "front", "left", "right", "up".

向上，向下，左，右，前，后。所以当我在ggplot中使用这些数据时，相关的任务（例如up和down）被相互绘制。

How ever, I need them ordered as: "up", "down", "left", "right", "front", "back". So that when I use this data in ggplot, the related tasks (such as "up" and "down") are plotted next to each other.

因素任务的级别排序？

推荐答案

假设您的数据框是mydf：

Assuming your dataframe is mydf:

mydf$task <- factor(mydf$task, levels = c("up", "down", "left", "right", "front", "back"))

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