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View Code? Open in Web Editor NEWCodes and notes in R when reading the book <R in action>
Codes and notes in R when reading the book <R in action>
4.2创建新变量与transform使用方法
4.3within使用方法
4.4变量的重命名
4.7类型转换
4.9向数据框中添加行和列
4.10常用的数据索引方式与subset函数使用方法(极重要)
5.2 数值和字符处理函数
5.3 数据处理难题的一套解决方案
5.4 控制流
5.5 用户自编函数
提交日报格式
审核日报与评价讨论
日报每两天提交一篇,一周提交三篇
FMX-->JQQ-->LJ-->LJF-->LWQ-->LX-->LXX-->MWJ-->XZB-->ZJ-->ZMY-->ZR-->ZZZ-->FMX
ZZZ
在深化高等教育改革、全面推进素质教育的新形势下,为提高各高校学生的编程水平,增强编程兴趣,拓展知识视野, 进一步丰富在校学生程序设计竞赛的形式和内容, 同时提高广大学生的学习积极性、创新意识和勇于实践的科学精神。
经研究决定,正式举办“彩云不南“词云创意大赛。
完成这一章后我们停下来复习一遍之前学过的并做些空间分析实验
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names <-c("FMX","JQQ","LJ","LJF","LWQ","LX","LXX","MWJ","XZB","ZJ","ZMY","ZR","ZZZ")
sample(names,length(names))
这一章是包括常用的统计检验方法,非常重要。
Day 7 会开始涉及使用r进行简单的空间分析。
这两章会有点枯燥,主要是方法的介绍。
使用代码操作数据,最大的优势在于具有很好的复现性,同样的操作写好代码完成一次就能完成一百次。对于复杂的操作,使用界面操作很容易遗忘细节,使用代码则可以完全复现。
其次使用代码功能更加强大,灵活,全面。
第三章是绘图基础,涉及到R语言的重要应用,绘图。需要多动手操作实践熟练掌握。
"LMX" "FMX" "ZZZ" "ZMY" "JQQ" "LX" "LJ" "DT" "MWJ" "ZR" "LXX" "LWQ" "LJF" "XZB" "ZJ"
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.