【发布时间】：2011-02-15 13:59:52
【问题描述】：
我想做一些非常简单的事情：我想为一个完整的数据框创建 一个 箱线图。然而，搜索“组合箱线图”和相关术语并没有提出任何建议。如果我忽略了一个明显的方法，请告诉我。
我有以下数据：
> theData
X20.7 X21.7 X22.7 X23.7 X24.7 X25.7 X26.7 X27.7 X28.7 X29.7 X30.7 X31.7 X32.7 X33.7 X34.7 X35.7
1 99.64920 99.49319 99.49319 99.49319 99.49319 99.49319 99.80837 99.29348 99.29348 99.29348 99.29348 99.29348 99.29348 99.46376 99.46376 99.51554
2 98.76469 98.60867 98.60867 98.60867 98.60867 98.60867 99.41553 98.40896 98.40896 98.40896 98.40896 98.40896 98.40896 98.74975 98.74975 98.54527
3 98.37824 98.22222 98.22222 98.22222 98.22222 98.22222 98.70900 98.13767 98.13767 98.13767 98.13767 98.13767 98.13767 98.47846 98.47846 98.01791
4 98.11356 97.95754 97.95754 97.95754 97.95754 97.95754 97.82447 97.93003 97.93003 97.93003 97.93003 97.93003 97.93003 98.27083 98.27083 97.81027
5 97.80027 97.64424 97.64424 97.64424 97.64424 97.48632 97.43801 97.40158 97.40158 97.40158 97.40158 97.40158 97.40158 97.74239 97.74239 97.28181
6 97.47825 97.32222 97.32222 97.32222 97.43795 97.12131 97.17333 97.03658 97.10158 97.10158 97.10158 97.10158 97.10158 97.44239 97.44239 96.98180
> dput(theData)
structure(list(X20.7 = c(99.6492, 98.7646913866934, 98.3782376564915,
98.1135635544627, 97.8002672890352, 97.4782549804011), X21.7 = c(99.4931928571429,
98.6086741582754, 98.2222160140822, 97.9575388921788, 97.6442390541023,
97.3222230681959), X22.7 = c(99.4931928571429, 98.6086741582754,
98.2222160140822, 97.9575388921788, 97.6442390541023, 97.3222230681959
), X23.7 = c(99.4931928571429, 98.6086741582754, 98.2222160140822,
97.9575388921788, 97.6442390541023, 97.3222230681959), X24.7 = c(99.4931928571429,
98.6086741582754, 98.2222160140822, 97.9575388921788, 97.6442390541023,
97.437947563131), X25.7 = c(99.4931928571429, 98.6086741582754,
98.2222160140822, 97.9575388921788, 97.4863155584865, 97.121313307238
), X26.7 = c(99.8083714285714, 99.415530164398, 98.7090041774867,
97.8244717838903, 97.4380076185552, 97.173326388931), X27.7 = c(99.2934828571429,
98.4089615689001, 98.1376722694449, 97.9300324124538, 97.401583100132,
97.03657716757), X28.7 = c(99.2934828571429, 98.4089615689001,
98.1376722694449, 97.9300324124538, 97.401583100132, 97.1015782240536
), X29.7 = c(99.2934828571429, 98.4089615689001, 98.1376722694449,
97.9300324124538, 97.401583100132, 97.1015782240536), X30.7 = c(99.2934828571429,
98.4089615689001, 98.1376722694449, 97.9300324124538, 97.401583100132,
97.1015782240536), X31.7 = c(99.2934828571429, 98.4089615689001,
98.1376722694449, 97.9300324124538, 97.401583100132, 97.1015782240536
), X32.7 = c(99.2934828571429, 98.4089615689001, 98.1376722694449,
97.9300324124538, 97.401583100132, 97.1015782240536), X33.7 = c(99.4637585714286,
98.7497473555799, 98.478463763926, 98.2708282766442, 97.7423900760775,
97.4423915096353), X34.7 = c(99.4637585714286, 98.7497473555799,
98.478463763926, 98.2708282766442, 97.7423900760775, 97.4423915096353
), X35.7 = c(99.5155421428571, 98.5452656069643, 98.0179127183643,
97.81026932055, 97.2818110000344, 96.9818010094329)), .Names = c("X20.7",
"X21.7", "X22.7", "X23.7", "X24.7", "X25.7", "X26.7", "X27.7",
"X28.7", "X29.7", "X30.7", "X31.7", "X32.7", "X33.7", "X34.7",
"X35.7"), row.names = c(NA, 6L), class = "data.frame")
我希望将所有这些数据汇总在一个箱线图中，但是，当我尝试绘制箱线图（即boxplot(theData)）时，R 会自动根据列名进行分组。
我也尝试将完整的数据框放入向量中，但是，因为我的（完整）数据集也包含 NA 值，所以我没有成功。到目前为止，我有以下函数来尝试制作数据框的向量，以便可以将其绘制在箱线图中：
for(i in 1:ncol(allTheData)) {
tmpData <- allTheData[,i]
for(j in 1:length(tmpData)){
if(!is.na(j)){
tmpVector <- c(tmpVector, j)
}
}
}
但是，我认为我把这个问题复杂化了，而且我怀疑这样的循环结构是否有利于 R 的性能。
那么，如何为 complete 数据框制作包含 一个 箱线图的箱线图？那么，我没有得到一个由 X20.7 到 X35.7 组成的箱线图，而是给出了一个“整体”箱线图？
【问题讨论】：