Monthly Archives:August 2016

绘制交通死亡图

August 31,2016
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绘制交通死亡图

On Monday,August 29,DJ Patil,the Chief Data Scientist in the White House Office of Science and Technology Policy,and Mark Rosekind,国家公路交通安全管理局(NHTSA)局长,announced the release of a data set...

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使用R和Simecol的流行病模拟模型

August 31,2016
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In this post we'll dip our toes into the waters of epidemological dynamics models,using R and simecol,as we have done in the previous two posts of this series.These models of epidemics are interesting in that they introduce us to a more general class of models called compartment models,commonly used in the study of biological systems....

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forcats 0.1.0 ????

August 31,2016
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forcats 0.1.0 ????

我很高兴宣布为猫,一个新的分类变量包,or factors.因素在R中有不好的说辞,因为它们经常出现在你不想要它们的时候。That's because historically,factors were more convenient than character vectors,as discussed in stringsAsFactors: An unauthorized biography by Roger Peng,和stringsasfactors=托马斯·鲁姆利。If you use packages from

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股票行权的基础与技术分析

August 31,2016
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股票行权的基础与技术分析

在这组练习中,我们将探讨对Quantmod软件包提供的股票进行基本和技术分析的可能性。If you don't have the package already installed,install it using the following code: install.packages("quantmod") and load it into the session using the following code: library("quantmod") before proceeding.Answers to the exercises are available

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如何使用R检查数据质量

August 31,2016
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By Milind Paradkar Do You Use Clean Data?Always go for clean data!为什么经验丰富的交易者/作者经常在他们的交易文章/书籍中强调这一点?作为一个新手交易员,您可能正在使用来自谷歌或雅虎财经等资源的免费数据。Do such sources provide accurate,quality data?...The post How to Check...

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G微生物组数据树

August 31,2016
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G微生物组数据树

ggtree可以解析许多软件输出,这些软件推断出的进化证据可以直接用于树注释。ggtree not only works as an infrastructure that enables evolutionary data that inferred by commonly used software packages to be used in R,同时也是R社区的通用树可视化和注释工具。

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ubeR: A Package for the Uber API

August 31,2016
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ubeR: A Package for the Uber API

Uber公开了一个用于与服务交互的广泛API。ubeR is a R package for working with that API which Arthur Wu and I put together during a Hackathon at iXperience.Installation The package is currently hosted on GitHub.Installation is simple using the devtools package.Authentication To work with the API you'll need The post ubeR: A...

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A map of elevators in NYC

August 30,2016
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不久前,I came across a random tweet pointing to a GitHub repository full of miscallaneous datasets.I was imemdiately excited by the various data science and visualization problems tha I could take on and immediately decided to get my hand...

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R社区很棒(而且速度也很快)

August 30,2016
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最近,我抱怨/抱怨或抱怨一些强大的R系统中有一些锋利的边缘。金宝搏网址In each case I was treated very politely,listened to,实际上在很短的时间内从志愿者那里得到了修复。That is really great and probably one of the many reasons R is a great ecosystem.Please … Continue reading The...

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佛罗里达

August 30,2016
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佛罗里达

The next AISTATS conference is taking place in Florida,Fort Lauderdale,on April 20-22.(网站一个接一个会议保持相同的地址,这意味着我与加的斯2016年Aistats会议的所有链接都不再有效。And that the above sunset from Florida is named… cadiz.jpg!) The deadline for paper submission

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