此事前準備 2017 生物多樣性資訊學夏季研習營 R intro

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(1)

(2)

Introduction to R

language

(3)

The Reason to

Design

(4)

FishingData <- fread(file =

"./data/FishingDataPartial.txt",

sep = "\t", header = T, stringsAsFactors = F,

encoding = "UTF-8")

SUM <- sum(FishingData$organismQuantity)

P <- NULL

for(i in 1:nrow(FishingData)) { A <- FishingData[i,]

B <- A$organismQuantity P <- c(P, (B/SUM)*100) }

(5)

R is a programming

language

It is open-source

(6)

OPEN

SOURCE

Package 1 Function 1, Function 2, … Package 2 Function 1, Function 2, … Package

(7)

(8)

絕對路徑

D:/tmp/DataAnalysis/DataAnalysis/demo/data.txt

D:/tmp/DataAnalysis/DataAnalysis/demo/data/data.txt

相對路徑

./data.txt

(9)

- - -

-Vector

…

"Pikachu"

(10)

Vector

1, 2, 3, 4, 5

TRUE, FALSE, FALSE, TRUE

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(12)

Vector

① _- ② _- ③ _- ④ _- ⑤ ⑥ _- ⑦ _- ⑧ _- ⑨ _- ⑩

(13)

Species Level Type1st Type2e_d

Pikachu 38 Electric none

Bulbasaur 2 Grass Poison

Charmander 25 Fire none

Pidgey 3 Normal Flying

Rattata 20 Dark Normal

(14)

rbind()

cbind()

old data

new data

old data

(15)

Step 1.

熟悉基本語法與操作方式

Step 2.

弄清楚感興趣的問題以及需要什麼樣的資料

Step 3.

看看

R

是否有內建的套件可供直接使用

(e.g.

計算算術平均數

)

Step 4.

找到並善用合適的外部套件

(16)

Funtion

is.na()

DT

data.table

numeric, chracter

result1

matrix

logic

Function

此 事前準備 2017 生物多樣性資訊學夏季研習營 R intro

Introduction to R

language

The Reason to

Design

R is a programming

language

It is open-source

OPEN

SOURCE

絕對路徑

D:/tmp/DataAnalysis/DataAnalysis/demo/data.txt

D:/tmp/DataAnalysis/DataAnalysis/demo/data/data.txt

相對路徑

./data.txt

-Vector

…

"Pikachu"

Vector

1, 2, 3, 4, 5

TRUE, FALSE, FALSE, TRUE

Vector

rbind()

cbind()

old data

new data

old data

Step 1.

熟悉基本語法與操作方式

Step 2.

弄清楚感興趣的問題以及需要什麼樣的資料

Step 3.

看看

R

是否有內建的套件可供直接使用

(e.g.

計算算術平均數

)

Step 4.

找到並善用合適的外部套件

is.na()

DT

data.table

numeric, chracter

result1

matrix

logic

table()

result2

named vector

Integer

此事前準備 2017 生物多樣性資訊學夏季研習營 R intro