私は次のようなテキスト(csv)ファイルを読む必要があります。最初の4列は私の興味の対象ですが、その後はたくさんのがらくたがあります。最初の4列をRに読み込みたいだけです。
最初の4列が必要なので、出力(Excelで開いたcsv)は次のようになります。
SOの制限により、ファイル全体を貼り付けることも添付することもできませんでした。トレーニングの小さな例を次に示します。
type,latitude,longitude,name,link1,
W,43.075319,-89.386145,Mirch Masala,"<just link, jjksskkls hskks > ","<just link, jjksskkls hskks > "
W,43.07488,-89.390698,Himal Chuli Restaurant,"<just link, jjksskkls hskks > ","<just link, hskks , hsksks > "
W,43.074887,-89.391011,Chautara Restaurant,"<just link, hskks , hsksks > ","<just link, jjksskkls hskks > "
W,43.092866,-89.351587,Dobhan Restaurant,"<just link, jjksskkls hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.074746,-89.393137,State Street Cash Mart,"<just link, jjksskkls hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.072801,-89.395718,Dotty Dumplings Dowry,"<just link, jjksskkls , hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.074744,-89.393046,Dobra Tea,"<just link, jjksskkls hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.076372,-89.380231,Hi-Madison,"<just link, jjksskkls hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.019624,-89.421822,Candlewood Suites Fitchburg,"<just link, jjksskkls , ssjjs hskks > ","<just link, jjksskkls , ssjjs hskks > "
W,43.08154,-89.524094,Holiday Inn Hotel & Suites Madison West,"<just link, jjksskkls 100 hskks > ","<just link, jjksskkls , ssjjs hskks > "
Rにインポートするときに最初の4列を読み取るだけのアイデアはありますか?