【发布时间】:2014-07-01 17:47:04
【问题描述】:
我写道:
require(dplyr)
require(ggplot2)
dcut2 <- diamonds %.%
group_by(cut,clarity,color) %.%
summarize(
meancarat=mean(carat,na.rm=TRUE),
ndiamonds=length(carat)
)
dcut2
输出是:
Source: local data frame [276 x 5]
Groups: cut, clarity
cut clarity color meancarat ndiamonds
1 Fair I1 D 1.8775000 4
2 Fair I1 E 0.9688889 9
3 Fair I1 F 1.0234286 35
4 Fair I1 G 1.2264151 53
5 Fair I1 H 1.4986538 52
6 Fair I1 I 1.3229412 34
7 Fair I1 J 1.9934783 23
8 Fair SI2 D 1.0169643 56
9 Fair SI2 E 1.0156410 78
10 Fair SI2 F 1.0801124 89
.. ... ... ... ... ...
请注意,我没有使用 tbl_df 工具。为什么要切断其余的输出?如何查看其余的输出?
【问题讨论】: