Question

我试图在ggplot2中制作一个关于回归量系数的刻面图具有相同预测变量的两个线性模型。我构建的数据框是：

r.together>
          reg         coef        se      y
1  (Intercept)  5.068608671 0.6990873 Labels
2     goodTRUE  0.310575129 0.5228815 Labels
3    indiaTRUE -1.196868662 0.5192330 Labels
4    moneyTRUE -0.586451273 0.6011257 Labels
5     maleTRUE -0.157618168 0.5332040 Labels
6  (Intercept)  4.225580743 0.6010509  Bonus
7     goodTRUE  1.272760149 0.4524954  Bonus
8    indiaTRUE -0.829588862 0.4492838  Bonus
9    moneyTRUE -0.003571476 0.5175601  Bonus
10    maleTRUE  0.977011737 0.4602726  Bonus

“y”列是模型的标签，reg是回归量，coef和se是您的想法。

我想绘图：

g <- qplot(reg, coef, facets=.~y, data = r.together) + coord_flip()

但是当我尝试显示情节时，我得到了：

> print(g)
Error in names(df) <- output : 
'names' attribute [2] must be the same length as the vector [1]

有什么奇怪的是

qplot(reg, coef, colour=y, data = r.together) + coord_flip()

按照您的预期绘制。

Answer 1

我不知道为什么，但名称y似乎是个问题。如果你改变它，那么它可以工作

r.together <- read.table(textConnection("
          reg         coef        se      myfactor
 (Intercept)  5.068608671 0.6990873 Labels
    goodTRUE  0.310575129 0.5228815 Labels
   indiaTRUE -1.196868662 0.5192330 Labels
   moneyTRUE -0.586451273 0.6011257 Labels
    maleTRUE -0.157618168 0.5332040 Labels
 (Intercept)  4.225580743 0.6010509  Bonus
    goodTRUE  1.272760149 0.4524954  Bonus
   indiaTRUE -0.829588862 0.4492838  Bonus
   moneyTRUE -0.003571476 0.5175601  Bonus
    maleTRUE  0.977011737 0.4602726  Bonus
"),header=T)

qplot(reg, coef, data = r.together, facets= .~myfactor ) + coord_flip()

Answer 2

可能是一个保留字吗？

r.together=data.frame(
  reg=c("(Intercept)", "goodTRUE", "indiaTRUE", "moneyTRUE", "maleTRUE", "(Intercept)", "goodTRUE", "indiaTRUE", "moneyTRUE", "maleTRUE"),
  coef=c(5.068608671, 0.310575129, -1.196868662, -0.586451273, -0.157618168, 4.225580743, 1.272760149, -0.829588862, -0.003571476, 0.977011737),
  se=c(0.6990873, 0.5228815, 0.519233, 0.6011257, 0.533204, 0.6010509, 0.4524954, 0.4492838, 0.5175601, 0.4602726),
  yy= c("Labels", "Labels", "Labels", "Labels", "Labels", "Bonus", "Bonus", "Bonus", "Bonus", "Bonus")
 )

yy似乎有效

g <- qplot(reg, coef, data = r.together,facets=. ~ yy) +coord_flip()

尝试在ggplot2中创建刻面图时出错

2 个答案: