Ngena emhlabeni we-R ukuze uthole ukuhlaziywa kwedatha
Umhlaba wokuhlaziya izibalo mkhulu futhi uyinkimbinkimbi, kodwa ulimi lwesi-R selwenze lobu bunzima bube lula. Yaziwa ngamandla ayo nobulula bayo, i-R isibe olunye lwezilimi zokuhlela ezidume kakhulu emkhakheni wokuhlaziya izibalo. Isifundo esithi “Qalisa ngolimi lwe-R ukuze uhlaziye idatha yakho” ku-OpenClassrooms isango lokungena kule adventure ethokozisayo.
Zisuka nje, uzokwaziswa ngendawo ye-R Studio, ithuluzi elibalulekile lanoma yimuphi umsebenzisi we-R. Uzothola izisekelo zolimi, kusukela ezinhlotsheni zento kuye ezindleleni zokungenisa nokuthekelisa idatha. Imojula ngayinye yakhelwe ukukunikeza amakhono asebenzayo, okukuvumela ukuthi ulawule, ubuze futhi ubone ngeso lengqondo idatha yakho kalula.
Kodwa akugcini lapho. Ngaphandle kwezinhlelo ezilula, uzoqondiswa ngama-nuances wokuhlaziya izibalo. Uyihumusha kanjani kahle imiphumela yakho? Ungakuqinisekisa kanjani ukwethembeka kokuhlaziya kwakho? Le mibuzo, neminye eminingi, izophendulwa kuso sonke isifundo.
Ngamafuphi, uma ubheka ukuba yingcweti yokuhlaziya idatha, ukwenza umqondo wezinombolo ezibonakala zingenasisekelo, lesi sifundo singelakho. Akukhona nje ukufunda ulimi olusha, kodwa mayelana nokucwiliswa emhlabeni lapho idatha ikhuluma futhi ixoxe izindaba.
Zulazula ezinhlobonhlobo zezinto ezingu-R ukuze uthole ukuhlaziya okuphelele
Amandla amakhulu olimi lwesi-R kusekunotheni kwalo ngokwezinto. Lezi zinto, ezingase zibonakale zobuchwepheshe uma uthi nhlá, empeleni ziyizinsika zokwakha eziyisisekelo zanoma yikuphi ukuhlaziya kwezibalo okwenziwa nge-R. Ngakho-ke ukuphatha kwazo kubalulekile kunoma yimuphi umhlaziyi wedatha osafufusa.
Isifundo se-OpenClassrooms sikucwilisa ngqo kulo mkhathi. Uzoqala ngokuzijwayeza ngezinhlobo ezahlukene zezinto ku-R, kusukela kumavekhtha alula kuye kozimele bedatha abayinkimbinkimbi. Uhlobo ngalunye lwento lunezici zalo kanye nokusetshenziswa kwalo, futhi uzofunda ukuthi ungayikhetha kanjani into efanele esimweni ngasinye.
Kodwa akugcini lapho. Ukubaluleka kokukhetha izakhi kulezi zinto kuyagqanyiswa. Ukuthi ufuna ukukhetha ku-vector, i-matrix, uhlu, noma uhlaka lwedatha, amasu athile onawo onawo. Isifundo sikuhambisa kulawa masu, akuvumela ukuthi ukhiphe, uhlunge, futhi ulawule idatha yakho ngokunemba.
Ekugcineni, ukwenza kahle izinto zika-R kungaphezu kwekhono lobuchwepheshe. Lona ukhiye wokuguqula idatha eluhlaza ibe yimininingwane ephusile.
Ukuguqula Idatha Ibe Ukulandisa Okubonwayo
Ukuhlaziywa kwedatha kungaphezu nje kokukhohlisa nokuphenya izinombolo. Esinye sezici ezibaluleke kakhulu yikhono lokuyibona ngeso lengqondo le datha, uyiguqule ibe amashadi nokubonwayo okuxoxa indaba. R, nelabhulali yayo enkulu yamaphakheji anikezelwe ekubukeni, ihamba phambili kule ndawo.
Isifundo se-OpenClassrooms sikuthatha ohambweni ngokusebenzisa amathuba okubona ngeso ahlinzekwa ngu-R. Kusukela kumagrafu ayisisekelo kuya ekubukeni okusebenzisanayo, uzothola ukuthi ungayenza kanjani idatha yakho iphile. Uzofunda ukusebenzisa amaphakheji afana ne-ggplot2, elinye lamathuluzi aziwa kakhulu futhi anamandla okudala amagrafu ku-R.
Kodwa ukubona ngeso lengqondo akugcini ekudaleni ihluzo ezinhle. Kumayelana nokutolika lezi ziboniso, ukuqonda ukuthi zembulani ngedatha yakho. Isifundo sikuqondisa kule nqubo yokuhumusha, sikusize ubone okuthrendayo, okudidayo, nemininingwane efihliwe kumashadi akho.
