August 2018
Intermediate to advanced
227 pages
4h 16m
Chinese
Content preview from 高效R语言编程
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.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.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.
8
｜
第
1
章
章介绍了如何安装和更新包）。可通过下面命令检查你是否安装了这些包：
library("microbenchmark")
library("profvis")
library("ggplot2")
运行整本书所需的软件配置，在本章“本书资源”一节中列出。
读者对象和如何使用本书
任何想快速编写
R
代码、使
R
代码运行更快且更具扩展性的人都应该阅读本
书。通常在学习了
R
语言中关于数据分析的基础知识之后会有这些需求。我
们假设你熟悉
R
语言或精通其他语言编程，同时本书也适用于初学者。根据
技术水平可将本书广大的读者群分为如下三类：
刚接触
R
语言的编程人员
本书将帮助你遍历
R
语言的特性以便高效工作，如果你将
R
如同其他语
言一样使用的话，则难以编写高效的代码。
少许编程经验的
R
用户
本书为你提供了很多概念与编程技巧（某些属于计算机科学），它们可提
高你的效率。
少许编程经验的
R
初学者
本书将引领你有一个良好开端。毕竟坏习惯容易养成且很难改掉。在你的
编程生涯开始时阅读本书将为你节约大量的网上搜索时间。
了解自己的情况有助于你从书中最大限度地获益。当你有个正在做的项目时
推荐你读一下本书，无论你的项目是工作上的相互协作项目，还是在家中就
能完成的简单的个人项目。为何这么说呢？因为本书所涉及的内容比大多数
编程教程更广泛（例如第
4
章谈及了项目管理）
,
做项目使你能够将概念、建议、
代码付诸实际工作中。从书本直接到工作的方式确保了实战中能强化所学内容。
如果你是上述分类的最后一组：
R
的初学者，我们推荐你所用的练手
R
项目
不是需要交付给客户的重要项目，而是别的一些 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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.