ggplot和R：随着时间的推移两个变量 [英] ggplot and R: Two variables over time

问题描述

我想知道如何使x和y在下面的示例数据集中绘制在横轴上的每个帧的每个元素的纵轴上。
$ b $ x $，$ =变量，frame = YYYYMM

示例数据：如何使用ggplot2执行此操作？

  df < - 结构（列表（x = c（0.000892333625290767,0.0161153931761482，
 0.0188150880795816,0.0268699106638318,0.018657330651898， 0.0101065034206662，
 0.00154410447630379），y = c（1.35172948829027,0.59654026447333，
 0.685835030118683,0.741545898152761,1.09653338596292,0.1119448208345102，
 0.104092642854814），frame = c（200912,201001,201002,201003，
 201004,201005,201006）），.Names = c（x，y，frame），row.names = c（1，
2，3， 4，5，6，7），class =data.frame）
  

我已经能够将其中一个绘制成一行，但它似乎并没有将我的框架识别为分类的（并非如此，也不知道如何将其更改为这样）。

  p < -  ggplot（df，aes（x = frame，y = x））
p + geom_line ）
  

解决方案

您需要融化数据：

  library（reshape2）
 dfm = melt（df，id.vars ='frame'）
 ggplot（dfm ，aes（x = frame，y = value，color = variable））+ geom_line（）
  

是什么对你的数据框：

 > dfm 
框架变量值
 1 200912 x 0.0008923336 
 2 201001 x 0.0161153932 
 3 201002 x 0.0188150881 
 4 201003 x 0.0268699107 
 5 201004 x 0.0186573307 
 6 201005 x 0.0101065034 
 7 201006 x 0.0015441045 
 8 200912 y 1.3517294883 
 9 201001 y 0.5965402645 
 10 201002 y 0.6858350301 
 11 201003 y 0.7415458982 
 12 201004 y 1.0965333860 
 13 201005 y 0.1194482083 
 14 201006 y 0.1040926429 
  

I'd like to know how to make it so that x and y, in the following example data set are plotted on the vertical axis for each element of frame in the horizontal axis. How do I do this with ggplot2?

x, y = variables, frame = YYYYMM

Example Data:

df <- structure(list(x = c(0.000892333625290767, 0.0161153931761482, 
0.0188150880795816, 0.0268699106638318, 0.018657330651898, 0.0101065034206662, 
0.00154410447630379), y = c(1.35172948829027, 0.59654026447333, 
0.685835030118683, 0.741545898152761, 1.09653338596292, 0.119448208345102, 
0.104092642854814), frame = c(200912, 201001, 201002, 201003, 
201004, 201005, 201006)), .Names = c("x", "y", "frame"), row.names = c("1", 
"2", "3", "4", "5", "6", "7"), class = "data.frame")

I've been able to get one plotted in a line, but it seems that it's not recognizing my frame as categorical (not that it is, nor do I know how to change it to such).

p <- ggplot(df, aes(x=frame, y=x))
p + geom_line()

解决方案

You need to melt your data:

library(reshape2)
dfm = melt(df, id.vars='frame')
ggplot(dfm, aes(x=frame, y=value, colour=variable)) + geom_line()

This is what that does to your data frame:

> dfm
    frame variable        value
1  200912        x 0.0008923336
2  201001        x 0.0161153932
3  201002        x 0.0188150881
4  201003        x 0.0268699107
5  201004        x 0.0186573307
6  201005        x 0.0101065034
7  201006        x 0.0015441045
8  200912        y 1.3517294883
9  201001        y 0.5965402645
10 201002        y 0.6858350301
11 201003        y 0.7415458982
12 201004        y 1.0965333860
13 201005        y 0.1194482083
14 201006        y 0.1040926429

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