Video: R txuag cov ntaub ntawv nyob qhov twg?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
R dataset cov ntaub ntawv
Ib txoj hauv kev yooj yim tshaj plaws cawm koj cov ntaub ntawv yog los ntawm txuag nws nyob rau hauv RData ntaub ntawv nrog kev ua haujlwm cawm (). R txuag koj cov ntaub ntawv mus rau lub chaw ua haujlwm ntawm koj lub computer disk hauv binary ntaub ntawv.
Hauv qhov no, koj yuav khaws cov ntaub ntawv hauv R li cas?
Teb: Yog hais kom ua nyob rau hauv lub R ntu be cawm dhau ntawm ntaub ntawv zaub mov. Rau qhov no nias Cov ntaub ntawv thiab tom qab ntawd cawm keeb kwm. Ib lub dialog box yuav tshwm sim, xauj rau lub nplaub tshev uas koj xav tau cawm tus ntaub ntawv (uas yuav muaj R commands nyob rau hauv ib zaug) thiab muab cov ntaub ntawv lub npe ntawm koj tus kheej xaiv.
Kuj Paub, Kuv yuav nrhiav tau cov npe tam sim no hauv R li cas? Rau kuaj koj cov ntaub ntawv ua haujlwm tam sim no , koj tuaj yeem khiav cov lus txib getwd() hauv RStudio console.
Hloov Daim Ntawv Qhia Ua Haujlwm
- Siv lub setwd R function.
- Siv cov cuab yeej | Hloov Ua Haujlwm Dir
- Los ntawm nyob rau hauv cov ntaub ntawv pane, siv qhov Ntau | Teem Ua Cov Ntawv Qhia Ua Haujlwm.
Ib yam li ntawd, tib neeg nug, dab tsi yog cov ntaub ntawv.rhistory?
Cov ntaub ntawv ntaub ntawv tsim los ntawm R, ib daim ntawv teev cov lej thiab cov duab kos duab; muaj cov keeb kwm ntawm cov lus txib nkag los ntawm tus neeg siv thaum lub sijhawm qhib R; zoo ib yam li ib.
R workspace yog dab tsi?
Cov chaw ua haujlwm yog koj tam sim no R ib puag ncig ua haujlwm thiab suav nrog txhua yam khoom siv uas tau hais tseg (vectors, matrices, data frames, lists, functions). Thaum kawg ntawm ib R kev sib kho, tus neeg siv tuaj yeem khaws cov duab ntawm qhov tam sim no chaw ua haujlwm uas yog cia li reloaded lub sij hawm tom ntej R pib.
Pom zoo:
Tus qauv twg yog siv los hloov cov ntaub ntawv kho mob thiab kev tswj hwm ntawm ntau lub tsev kho mob cov ntaub ntawv xov xwm HIS)?
Kev Noj Qab Haus Huv Qib Xya lossis HL7 yog hais txog cov txheej txheem thoob ntiaj teb rau kev hloov pauv cov ntaub ntawv kho mob thiab kev tswj hwm ntawm cov ntawv thov software siv los ntawm ntau tus kws kho mob. Cov qauv no tsom rau cov txheej txheem thov, uas yog 'txheej 7' hauv OSI qauv
Dab tsi yog qhov txawv ntawm cov ntaub ntawv davhlau ya nyob twg cov cuab yeej DTE thiab cov khoom siv sib txuas lus DCE)?
DTE (Data terminating equipment) thiab DCE (Data circuit terminating equipment) yog hom kev sib txuas lus serial. DTE yog ib qho khoom siv uas tuaj yeem ua tau raws li binary digital cov ntaub ntawv los yog qhov chaw. Thaum DCE suav nrog cov khoom siv uas xa lossis tau txais cov ntaub ntawv hauv daim ntawv digital lossis analog teeb liab hauv lub network
HTTP txoj kev twg yog qhov browser siv thaum koj xa cov ntaub ntawv mus rau qhov chaw nyob hauv Web?
Los ntawm kev tsim, POST txoj kev thov thov kom lub web server lees txais cov ntaub ntawv nyob hauv lub cev ntawm cov lus thov, feem ntau yuav khaws cia. Nws feem ntau siv thaum uploading cov ntaub ntawv lossis thaum xa daim ntawv ua tiav hauv lub vev xaib. Hauv qhov sib piv, HTTP GET thov txoj kev khaws cov ntaub ntawv los ntawm lub server
Kuv qhov chaw txuag cov ntaub ntawv Mac nyob qhov twg?
Txuag cov ntaub ntawv khaws cia rau hauv lub neej ntawd chav CloudStoragelocation, uas txawv nyob ntawm lub platform: Yeej: C: ProgramFiles(x86) Steamuserdata688420emote. Mac:~/Library/ApplicationSupport/Steam/userdata//688420/remote
Vim li cas kem taw qhia cov ntaub ntawv khaws cia ua cov ntaub ntawv nkag ntawm disks sai dua li kab qhia cov ntaub ntawv khaws cia?
Kem oriented databases (aka columnar databases) yog qhov tsim nyog rau kev ntsuas kev ua haujlwm ntau dua vim tias cov ntaub ntawv hom ntawv (kem hom) qiv nws tus kheej kom nrawm dua cov lus nug ua - scans, aggregation thiab lwm yam. Ntawm qhov tod tes, kab oriented databases khaws ib kab (thiab tag nrho nws. kab) contiguously