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R&RStudio入門
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hujuu
November 19, 2016
Education
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720
R&RStudio入門
<Rのインストールから簡単な操作を実践>
~ Rの概要と使い方を学びます ~
・RとR studioの紹介と使い方
・ベーシックなスクリプトを書いてみる
・CSVを読み込んで分析の準備をしよう
hujuu
November 19, 2016
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Transcript
R & R STUDIO TUTORIAL R BUSINESS ANALYSIS Wi-Fi SSID:
Pass:
R Business Analysis ͻͱ·ͣࣗݾհ • ήʔϜ։ൃͯ͠·͢ • ࠷ۙओʹQA • R
ྺ • 1 • ౘ • ͋Θͤͯɺߚ • స৬૬ஊडத!! @hujuu
R Business Analysis ࣮ʹ׆͖ΔܗͰRΛֶͿ • ৗۀͰσʔλੳΛ͍ͯ͠Δ͕ɺֶͼ͋͏ڥ ͕ͳ͘ࠔ͍ͬͯΔ • σʔλੳπʔϧͱͯ͠,ʮ R
ʯΛݕ౼͍ͯ͠Δ • ઐੑϓϩάϥϛϯάεΩϧʹدͬͨษڧձͰ ͳ࣮͘ʹ݁͢ΔσʔλੳྗΛߴΊ͍ͨ
R Business Analysis RͲΜͳݴޠʁ ౷ܭղੳ͚ͷϓϩάϥϛϯάݴޠ ୭Ͱ͑Δʂ ແྉͰ Windows ʹ Mac
ʹରԠ ͍ͭͰ͑Δ গͳ͍ίʔυͰੳ݁ՌάϥϑΛૉૣ͘ग़ྗ 4
R Business Analysis • ॲཧ͕༏Ε͓ͯΓɺϏοάσʔλΛੳ͢Δࡍʹޮత • ExcelͰΉ͔͍ͣ͠౷ܭੳ͕ग़དྷΔ • ྫ :
Ϋϥελʔੳ, όεέοτੳ(ΞιγΤʔγϣϯੳ) • ༷ʑͳύοέʔδΛ׆༻͢Δ͜ͱͰੳͷ෯͕͛ΒΕΔ • άϥϑͷඳըʹڧ͍ • ggplot2ͰͷάϥϑԽࣗ༝͕ߴ͘ɺࢹೝੑ͕ߴ͍ ɹɹɹͷओͳϝϦοτ
R Business Analysis ൺֱ༰ OS Mac,Windows,Linux WindowsϝΠϯ Macͩͱੳػೳ͕ෆࣗ༝ ॲཧ ˚
X ѻ͑Δσʔλྔ ʓ (150ສߦͷಡΈࠐΈՄೳ) X (1,048,576 ߦɺ16,384 ྻ) ֦ுੑ ʓ ˚ GUI ˚ ʓ Ձ֨ ແྉ ༗ྉʢ݄ઍԁʙʣ ར༻༻్ ౷ܭղੳ දܭࢉࢿྉ࡞ͳͲଟ༷
R Business Analysis ɹɹɹͷΠϯετʔϧ 1. CRANʢThe Comprehensive R Archive NetworkʣʹΞ
Ϋηε https://cran.r-project.org/ 2. ༻͍ͯ͠ΔOSʹ͋ΘͤͯRͷΠϯετʔϥʔΛμϯ ϩʔυ ύοέʔδ͕ಈ͔ͳ͍͜ͱ͕ແ͍Α͏ʹ࠷৽൛Λ 3. μϯϩʔυͨ͠ϑΝΠϧΛ։͍ͯΠϯετʔϧ
R Business Analysis
R Business Analysis αϯϓϧίʔυ 2 ^ 5 a <- 100
b <- 2 a * b list <- c(2,4,6,8,10) list
R Business Analysis ͷΠϯετʔϧ 1. ͍ΘΏΔ RͷIDE (౷߹։ൃڥ)Ͱ͢ɻ εΫϦϓτϑΝΠϧɺ࣮ߦconsoleɺάϥϑεϖʔεɺ ಡΈࠐΜͩσʔλͷҰཡͳͲ͕ݟ͘͢ஔ͞Ε·͢
2. R studioͷΠϯετʔϥΛμϯϩʔυ https://www.rstudio.com/products/rstudio/download/ 3. μϯϩʔυͨ͠ΠϯετʔϥΛ։͍ͯΠϯετʔϧ
R Business Analysis
R Business Analysis • ೖྗิॿ͕ڧ͍ • άϥϑͷΞτϓοτ͕͍͢͠ • ΤσΟλͷจࣈ৭ͱഎܠΛฤू͠ ͯɺݟ͍͢ઃఆʹͰ͖Δ
• ෳͷεΫϦϓτϑΝΠϧΛλϒͰ ։͍͓͚ͯΔ • ύοέʔδϦετͷӾཡσΟϨΫ τϦϑΝΠϧͷ֬ೝͳͲ͕Ͱ͖Δ ͷϝϦοτ
R Business Analysis άϥϑΛॻ͍ͯΈΑ͏ʂ x <- 1:10 y <- 1:10
plot(x, y) # x࣠Λ10͔Β1ͷฒͼํʹ͢Δ plot(x, y, xlim=c(10,1))
R Business Analysis ࡞ۀσΟϨΫτʹ͍ͭͯ • σʔλϓϩάϥϜͷ ಡΈࠐΈ,σʔλͷॻ͖ ग़͠Λ͢Δॴ͕࡞ۀ σΟϨΫτϦ •
ϑΝΠϧࢦఆ͕͍͢͠ Α͏ʹมߋ͓ͯ͘͠
R Business Analysis CSVσʔλΛಡΈࠐΜͰΈΑ͏ʂ # ࡞ۀσΟϨΫτϦʹ͋ΔCSVΛಡΈऔΔ read.csv("kakei_201609.csv") # ࡞ۀσΟϨΫτϦʹ͋ΔCSVΛಡΈࠐΉ data
<- read.csv("kakei_201609.csv") # ಡΈࠐΜͩσʔλςʔϒϧͷ಄Λදࣔ head(data)
R Business Analysis جຊతͳؔΛͬͯΈΑ͏ʂ # σʔλϑϨʔϜͷฏۉɺதԝͳͲΛ·ͱΊͯग़͢ summary(data) # ྻΛࢦఆͯ͠ɺαϚϦʔΛදࣔ͢Δ summary(data$ফඅࢧग़)
# ಡΈࠐΜͩσʔλςʔϒϧͷྻ໊Λදࣔ names(data)
R Business Analysis ͞Βʹ…Α͘͏ศརͳؔҰཡ ؔ max(x) min(x) mean(x) median(x) sum(x)
ҙຯ ࠷େ ࠷খ ฏۉ தԝ ૯
R Business Analysis άϥϑΛॻ͍ͯΈΑ͏ʂ # άϥϑͰຊޠΛදࣔ͢Δઃఆ par(family = "HiraKakuProN-W3") #
ฏۉάϥϑΛඳը͢Δ barplot(data$ڭཆޘָ, names.arg = data$༻్ྨ, las = 3)
R Business Analysis E N D