August 2018
Intermediate to advanced
227 pages
4h 16m
Chinese
Content preview from 高效R语言编程
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84
｜
第
4
章
plotrix
（
https://cran.r-project.org/web/packages/plotrix/index.html/
）
通用的绘制包，提供了基本的甘特图绘制功能，输入
example
（
gantt.
chart
）可查阅具体信息。
DiagrammeR
（
http://rich-iannone.github.io/DiagrammeR/
）
R
中绘制网络图以及其他示意图的一款新软件包。该包提供了简单流程图
文件的
R
接口，例如
mermaid
（
https://github.com/knsv/mermaid/
）以及
GraphViz
（
https://github.com/ellson/graphviz/
）。
紧接的小例子（为绘制类似图
4-2
的图提供了基础）说明
DiagrammeR
如何
将简单的文本输入生成信息丰富的最新进展的甘特图。
只要这些图表没有占
用宝贵的编程时间从而偏离项目的核心目标，它们就对大型的复杂的
R
项目
的计划与任务管理极有帮助。
library
（“
DiagrammeR
”）
#
定义甘特图并绘制（不显示）
mermaid("gantt
Section Initiation
Planning :a1, 2016-01-01, 10d
Data processing :after a1 , 30d")
本例中，gantt 定义了后续的数据布局。Section 指项目的分节（对具有里程
碑的大型项目很有用），并且每行代表一个独立任务。 ...
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I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.