吳齊軒/漫談 r 的學習挑戰與 r 語言翻轉教室
Post on 21-Apr-2017
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R R R R Wush WuTaiwan R User Group
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R
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http://spectrum.ieee.org/computing/software/the-2015-top-ten-programming-languages
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http://myfootpath.com/careers/engineering-careers/statistician-careers/
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http://www.r-bloggers.com/mapping-the-worlds-biggest-airlines/
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http://r4stats.com/2013/03/19/r-2012-growth-exceeds-sas-all-time-total/
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http://img.diynetwork.com/DIY/2003/09/18/t134_3ca_med.jpg
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R
R
R
R
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https://docs.oracle.com/cd/B28359_01/datamine.111/b28129/process.htm
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R
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https://docs.oracle.com/cd/B28359_01/datamine.111/b28129/process.htm
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Data Package Lahman
R (httr rvest)
R API Package
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Best Practices for Writing an API Package
quantmod twitteR
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[1] "TWII"
TWII.OPEN TWII.HIGH TWII.LOW TWII.CLOSE TWII.VOLUME TWII.ADJUSTED
7871.41 7937.26 7843.60 7920.80 5710600 7920.777
7954.96 7999.42 7917.30 7917.30 5951400 7917.277
7929.89 7955.90 7901.24 7934.51 5717400 7934.487
7940.20 7942.23 7821.71 7835.57 5181400 7835.547
7778.57 7797.57 7736.11 7736.71 4292400 7736.688
7778.38 7827.93 7778.38 7790.01 4516000 7789.987
library(quantmod)getSymbols("^TWII")head(TWII)
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: AirbnB uses R to scale datascience
Rbnb
Airbnb's engineering, data science, analytics and user
experience teams
Hadoop / SQL R Missing Data
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How Airbnb uses Machine Learning to Detect Host
Preferences
How well does NPS predict rebooking?
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Reproducible Research·
R Markdown
Jupyter ir-kernel
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R
R ·
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R R
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http://joelcadwell.blogspot.tw/2013/03/lets-do-some-hierarchical-bayes-choice.html
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R
GUI
R
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R (help)-
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R
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R
R ·
R
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copy paste
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Estimate NA
Beta Beta
Intercept,data[,2],data[,3],data[,i],data[,j],data[,i]:data[,j]
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[ ]:
Oracle ( big5)
DBMSencoding
[ ]:
con <- odbcConnect(dsn, uid = "", pwd = "", DBMSencoding="big5")
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R
UseMethod("xmlNamespaceDefinitions") : 'xmlNamespaceDefinitions' "NULL"
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[ ]:
R ( SAS)
.DAT 65 40
R
read.delim() XD
~
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21
( 21 )
sample(52)cards<-sample(52)num<-cards%%13num
(52\13 )
?
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R ·
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R
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http://radiusonline.com/interns/my-first-month-at-radiusonline/learn-by-doing/
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R R
Live Demo:
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01-RBasic-02-Data-Structure-Vectors
# 87 91year1 <- 87:91power1 <- c(6097059332, 6425887925, 6982579022, 7323992602.53436, 7954239517) # 87 91power2 <- c(59090445718, 61981666330, 67378329131, 66127460204.6482, 69696372914.6949)
# (`year1`) `7e9` # `7e9` R `7 * 10^9`
year1.answer1 <- < >
# 87 91power1.mean <- < >
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02-RDataEngineer-01-Parsing
# <http://data.gov.tw/node/7769> # # # # R pirate_info <- readLines(file(pirate_path, encoding = < encoding>))
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02-RDataEngineer-06-Join
#' `gdp_path` `gdp`#' `gdp_path` / GDP( )
...
#' cl_info mortgage_bal data_dt#' cl_info `cl_info_year`
...
#' `gdp` `cl_info`#' gdp mortgage_total_bal / gdp
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vignettes
help
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example
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R
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00-Hello-DataScienceAndR
01-RBasic
02-RDataEngineer
03-RVisualization
Optional-Programming
Project-ROpenData
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Hello DataScienceAndR
swirl
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R Basic
R
R
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R Data Engineer
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API Server JSON
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R Visualization
ggplot2
googleVis ggmap
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Hello World·
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Wush Wu Chih Cheng Liang Cheng-Yu Lin Johnson
Hsieh CC - 3.0
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2016-02-13 2016-07-15
1238
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R62/80
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http://www.effectivephilanthropy.org/qa-improving-application-and-reporting-processes/
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Swirl Project
lesson.yaml
swirl
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https://github.com/swirldev/swirl/compare/master...wush978:master-
- Class: meta Course: DataScienceAndR Lesson: 00-Hello-DataScienceAndR Author: Wush Wu Type: Standard Organization: Taiwan R User Group
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cmd_question
- Class: cmd_question Output: `chol2inv` CorrectAnswer: help(chol2inv) AnswerTests: any_of_exprs("?chol2inv", "help(chol2inv)") Hint: `?` `help`
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mult_question
- Class: mult_question Output: | assignment R console `a - 1` AnswerChoices: 1;2;" ";"4" CorrectAnswer: 1 AnswerTests: omnitest(correctVal= '1')
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script
- Class: script Output: | `submit()` Rstudio File -> Reopen With Encoding... -> UTF-8 Script: RBasic-02-HW.R AnswerTests: rbasic_02_hw_test()
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DataScienceAndR/ 01-RBasic-02-Data-Structure-Vectors/ customTests.R initLesson.R lesson.yaml scripts/ RBasic-02-HW.R RBasic-02-HW-correct.R
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Tests
omnitest
any_of_exprs
My implementations:
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https://github.com/wush978/swirl/blob/master/R/answerTests3.R-
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Installation
https://github.com/wush978/R/blob/gh-pages/init-swirl.R
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Q&A79/80
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R vs Python
Choosing R or Python for data analysis? An infographic
Pros and Cons of R vs Python Sci-kit learn
Which is better for data analysis: R or Python?
How to Choose Between Learning Python or R First
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