Introduktion & read.csv

Introduktion till dataimport i R

Filip Schouwenaars

Instructor, DataCamp

Importera data i R

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Importera data i R

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5 typer

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Flata filer

states.csv

state,capital,pop_mill,area_sqm
South Dakota,Pierre,0.853,77116
New York,Albany,19.746,54555
Oregon,Salem,3.970,98381
Vermont,Montpelier,0.627,9616
Hawaii,Honolulu,1.420,10931

wanted_df


         state    capital pop_mill area_sqm
1 South Dakota     Pierre    0.853    77116
2     New York     Albany   19.746    54555
3       Oregon      Salem    3.970    98381
4      Vermont Montpelier    0.627     9616
5       Hawaii   Honolulu    1.420    10931

utils - read.csv

Laddas automatiskt när R startar
```
read.csv("states.csv")
```
Vad om filen finns i mappen datasets i hemkatalogen (~)?

path <- file.path("~", "datasets", "states.csv")

path

"~/datasets/states.csv"

read.csv(path)

Nu kör vi en övning!

Introduktion till dataimport i R