data science - github pages · > ggmap(map) + geom_point(aes(x = lon, y = lat, size = uvi), data =...
TRANSCRIPT
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R (1)
Data Science
2016/10/3 ()
. CC --
3.0 http://shouzo.github.io/
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Agenda() Prepare() Basic()
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() Prepare
() Prepare
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() Prepare
https://youtu.be/fcd6zSk0yd8 0:00 - 0:37
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() Prepare
"RStudio"
RStudio
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() Basic
() Basic
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() Basic
1.
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= (Knowledge Discovery in DatabasesKDD)
A. B. C.
""""
https://zh.wikipedia.org/wiki/%E6%95%B0%E6%8D%AE%E6%8C%96%E6%8E%98
() Basic
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(Knowledge Discovery)
(Hypothesis Testing)
(Classification)
(Predication)
(Estimation)
(Clustering)
(Association)
http://myweb.fcu.edu.tw/~mhsung/Ecommerce/Data_Mining/DM_methods.htm
() Basic
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STEP1 STEP2 STEP3
() Basic
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() Basic
2.
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() Basic
(1) (Vectors)
(2) (Factors)
(3) (Arrays)(Matrices)
(4) (DataFrame)
(5) (Lists)
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() Basic
>1+1[1]2>>1+2+3[1]6>>3*7*2[1]42>>4/2[1]2>>4/3[1]1.333333>
>4*6+5[1]29>>(4*6)+5[1]29>>4*(6+5)[1]44>
> > > >
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() Basic
>#("
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() Basic (Vectors)
(1) (Vectors)1. ""
2. (Vectors)"(colume)""(row)"
3. "(Objects)"
""(logical)(integer)(numeric)(complex)(character)
>#"(vectors)">x>#"x">x[1]12345678910>
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() Basic (Vectors)
(1) (Vectors)(1)
>x>x*3#3[1]3691215>>x+2#2[1]34567>>x4#4[1]32101>>x/10#10[1]0.10.20.30.40.5>>x^2#[1]1491625>
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() Basic (Vectors)
(1) (Vectors)(2)
>#":">1:10[1]12345678910>5:4[1]5432101234>>#>xyx+y#[1]4202468101214>xy#[1]6666666666>x*y#[1]5898507162740>x/y#[1]0.20.51.02.05.0Inf7.04.03.02.5>x^y#[1]1.000000e+006.250000e023.703704e026.250000e022.000000e011.000000e+00[7]7.000000e+006.400000e+017.290000e+021.000000e+04
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() Basic (Vectors)
(1) (Vectors)
1. 2. >x>#"[]">x[1][1]1>>x[1:2][1]12>>x[c(1,4)]#"1""4"[1]14>
>x>#"mode()">mode(x)[1]"numeric">>#"length()">length(x)[1]10>
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() Basic (Factors)
(2) (Factors)
ABABO
1. ""2. "level"3. """"
1 R "" levels ordered = TRUE Factor "")
2(Factors)""(Vectors)
>x>factor(x)[1]124312341Levels:1234>>>#Level>factor(x,labels=c("", "","",""))[1]Levels:
>factor(x,ordered=TRUE)#[1]124312341Levels:1
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() Basic (Array)(Matrices)
(3) (Array)(Matrices)
>#2x3x2>theArraytheArray,,1
[,1][,2][,3][1,]135[2,]246
,,2
[,1][,2][,3][1,]7911[2,]81012
>#3x4>theMatrixtheMatrix[,1][,2][,3][,4][1,]14710[2,]25811[3,]36912>
1. ""
2. "(row)""(colume)"
""(vectors)
1. ""
2. "(row)""(colume)"
""(vectors)
(Array) (Matrices)
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() Basic (DataFrame)
(4) (DataFrame)
>aaidscores.1scores.211809022819133829244839355849466859577869688879799889810108999>
"(row)""(colume)"
1. """"
2. """"
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() Basic (Lists)
(5) (Lists)
>xx$irisSepal.LengthSepal.WidthPetal.LengthPetal.WidthSpecies15.13.51.40.2setosa24.93.01.40.2setosa34.73.21.30.2setosa44.63.11.50.2setosa55.03.61.40.2setosa65.43.91.70.4setosa74.63.41.40.3setosa85.03.41.50.2setosa94.42.91.40.2setosa104.93.11.50.1setosa115.43.71.50.2setosa124.83.41.60.2setosa134.83.01.40.1setosa
1. 2.
numericcharacterDataFramelist...
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() Basic ...
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() Basic
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() Basic
R ggmap
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() Basic
R ggmap
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() Basic
(1)
R ggmap
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() Basic
(2) - http://data.gov.tw/node/6076
R ggmap
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() Basic
R ggmap
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() Basic
STEP1(1)ggmapmapproj#()
>install.packages("ggmap")#"ggmap">install.packages("mapproj")#"mapproj"
#>library(ggmap)#"ggmap">library(mapproj)#"mapproj"
#>mapggmap(map)
R ggmap
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() Basic
STEP1 ()
R ggmap
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() Basic
STEP2(1)
>getwd()#"getwd()"
R ggmap
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() Basic
STEP2(2)
>setwd()#"setwd()"
#"r_test">setwd(".../r_test")
R ggmap
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() Basic
STEP2(3)
http://data.gov.tw/node/6076
R ggmap
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() Basic
STEP2(4)
>#>uv>head(uv)#SiteNameUVIPublishAgencyCountyWGS84LonWGS84LatPublishTime10120,29,16.9222,40,23.092016090611:0021120,18,20.4822,45,27.022016090611:0036120,19,2.1023,18,20.282016090611:0047120,14,50.4623,27,55.112016090611:0056120,52,50.0623,28,14.192016090611:0062120,48,05.0223,30,30.822016090611:00>
R ggmap
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() Basic
STEP2A.
>lon.deguv$lonlat.deguv$lat
>ggmap(map)+geom_point(aes(x=lon,y=lat,size=UVI),data=uv)B.
R ggmap
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() Basic
STEP3
R ggmap
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() Reference
() Reference
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http://datascienceandr.org/
1. R - Wush WuChih Cheng LiangJohnson Hsieh
2. R - &http://goo.gl/18mwug
3. R - https://goo.gl/NPdzzP
1. DataCamphttps://www.datacamp.com/
2. R for Data Sciencehttp://r4ds.had.co.nz/
() Reference
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R
Jared P. Lander
() Reference
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Taiwan R User Grouphttps://www.facebook.com/Tw.R.User/
https://www.facebook.com/twdsconf/
/ Data Visualizationhttps://www.facebook.com/data.visualize/
() Reference
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Q & A