Ngena kwihlabathi le-R kuhlalutyo lwedatha
Ihlabathi lohlalutyo lwamanani likhulu kwaye lintsonkothile, kodwa ulwimi lwe-R luye lwakwenza lula oku kuntsonkotha. Eyaziwa ngamandla ayo kunye nokulula, i-R iye yaba lolona lwimi ludumileyo lwenkqubo kwicandelo lohlalutyo lwamanani. Ikhosi "Qalisa ngolwimi lwe-R ukuhlalutya idatha yakho" kwi-OpenClassrooms lisango eliya kolu hambo lunomdla.
Ukususela ekuqaleni, uya kwaziswa kwindawo ye-R Studio, isixhobo esibalulekileyo kunoma yimuphi umsebenzisi we-R. Uya kufumana iziseko zolwimi, ukusuka kwiintlobo zezinto ukuya kwiindlela zokungenisa kunye nokuthumela ngaphandle idatha. Imodyuli nganye yenzelwe ukukubonelela ngezakhono ezisebenzayo, ezikuvumela ukuba ulawule, ubuze kwaye ubone idatha yakho ngokulula.
Kodwa akuphelelanga apho. Ngaphandle kwenkqubo elula, uya kukhokelwa kwii-nuances zohlalutyo lwamanani. Indlela yokutolika ngokuchanekileyo iziphumo zakho? Ungakuqinisekisa njani ukuthembeka kohlalutyo lwakho? Le mibuzo, kunye neminye emininzi, iya kuphendulwa kulo lonke ikhosi.
Ngamafutshane, ukuba ujonge ukugqwesa ubugcisa bokuhlalutya idatha, ukwenza ingqiqo yamanani abonakala engqongqo, le khosi yeyakho. Ayikokufunda ulwimi olutsha kuphela, kodwa malunga nokuntywila kwihlabathi apho idatha ithetha kwaye ibalise amabali.
Khangela iyantlukwano yezinto ze-R ukuze ufumane uhlalutyo olululo
Amandla aphambili olwimi lwesi-R kubutyebi balo ngokwezinto. Ezi zinto, ezinokuthi zibonakale zobugcisa ekuboneni kuqala, ngokwenene ziyiziseko zokwakha ezisisiseko kulo naluphi na uhlalutyo lweenkcukacha-manani olwenziwa kunye no-R. Ulawulo lwabo ngoko luyimfuneko kunoma yimuphi umhlalutyi wedatha onqwenelayo.
Ikhosi ye-OpenClassrooms ikuntywilisela ngqo kule ndalo iphela. Uya kuqala ngokuziqhelanisa neentlobo ezahlukeneyo zezinto kwi-R, ukusuka kwii-vectors ezilula ukuya kwi-dataframes entsonkothileyo. Uhlobo ngalunye lwento luneempawu zalo kunye nokusetyenziswa, kwaye uya kufunda indlela yokukhetha into efanelekileyo kwimeko nganye.
Kodwa akuphelelanga apho. Ukubaluleka kokukhetha izinto kwezi zinto kukwagxininiswa. Nokuba ufuna ukukhetha kwivektha, imatriki, uluhlu, okanye uluhlu lwedatha, ubuchule obuthile bukhoyo. Ikhosi ihamba nawe kwezi zindlela, ikwenza ukwazi ukukhupha, ukuhluza, kwaye ulawule idatha yakho ngokuchanekileyo.
Ekugqibeleni, ukuqonda izinto ze-R kungaphezulu kwesakhono sobugcisa. Esi sisitshixo sokuguqula idatha ekrwada ibe yimibono enentsingiselo.
Ukuguqula iDatha ibe ziiNdawo eziBalisiweyo
Uhlalutyo lwedatha lungaphezulu nje kokukhohlisa kunye nokugocagoca amanani. Enye yezona zinto zibaluleke kakhulu kukukwazi ukujonga le datha, ukuyijika ibe ziitshathi kunye nokubonwayo okubalisa ibali. R, kunye nethala leencwadi elikhulu leephakheji ezinikezelwe ekuboniseni, liyagqwesa kule ndawo.
Ikhosi ye-OpenClassrooms ikuthatha kuhambo ngeendlela zokubonwayo ezibonelelwa ngu-R. Ukusuka kwiigrafu ezisisiseko ukuya kwimiboniso esebenzayo, uya kufumanisa indlela yokuzisa idatha yakho ebomini. Uya kufunda ukusebenzisa iipakethe ezinje ngeggplot2, esinye sezona zixhobo zidumileyo nezinamandla zokwenza iigrafu kwi-R.
Kodwa ukubonwa akuyeki ukwenza imizobo entle. Ikwamalunga nokutolika oku kubonwayo, ukuqonda ukuba kutyhilwa ntoni malunga nedatha yakho. Ikhosi ikukhokela kule nkqubo yokutolika, ikunceda ubone iintsingiselo, izinto ezingaqhelekanga, kunye nokuqonda okufihlakeleyo kwiitshathi zakho.
