Za analizo podatkov je včasih potrebno ustvariti podatkovno datoteko CSV in v njej izvesti nekaj operacij v skladu z našimi zahtevami. Torej, v tem članku se bomo naučili, kako zapisati podatke v datoteko CSV z uporabo programskega jezika R.
vračanje nizov v javi
Za pisanje v datoteko csv se uporablja funkcija write.csv().
Sintaksa: write.csv(podatki, pot)
Parameter:
- podatki: podatki, ki jih je treba dodati v csv
- pot: ime poti do datoteke
Pristop:
- Ustvari DataFrame
- Funkciji posredujte zahtevane vrednosti
- Zapiši v datoteko
Najprej ustvarimo podatkovni okvir.
primer:
R
Country <->c>(>'China'>,>'India'>,>'United States'>,>'Indonesia'>,>'Pakistan'>)> > Population_1_july_2018 <->c>(>'1,427,647,786'>,>'1,352,642,280'>,> >'327,096,265'>,>'267,670,543'>,>'212,228,286'>)> > Population_1_july_2019 <->c>(>'1,433,783,686'>,>'1,366,417,754'>,> >'329,064,917'>,>'270,625,568'>,>'216,565,318'>)> > change_in_percents <->c>(>'+0.43%'>,>'+1.02%'>,>'+0.60%'>,>'+1.10%'>,>'+2.04%'>)> > > data <->data.frame>(Country, Population_1_july_2018, Population_1_july_2019, change_in_percents)> print>(data)> |
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Izhod:
Naši podatki v konzoli
Zdaj pa zapišimo te podatke v datoteko csv in jih shranimo na želeno mesto.
primer:
R
Country <->c>(>'China'>,>'India'>,>'United States'>,>'Indonesia'>,>'Pakistan'>)> > Population_1_july_2018 <->c>(>'1,427,647,786'>,>'1,352,642,280'>,> >'327,096,265'>,>'267,670,543'>,>'212,228,286'>)> > Population_1_july_2019 <->c>(>'1,433,783,686'>,>'1,366,417,754'>,> >'329,064,917'>,>'270,625,568'>,>'216,565,318'>)> > change_in_percents <->c>(>'+0.43%'>,>'+1.02%'>,>'+0.60%'>,>'+1.10%'>,>'+2.04%'>)> > > data <->data.frame>(Country, Population_1_july_2018, Population_1_july_2019, change_in_percents)> print>(data)> > write.csv>(data,>'C:Users...YOUR PATH...population.csv'>)> print>(>'CSV file written Successfully :)'>)> |
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Izhod:
Datoteka CSV s podatki