Video: Dab tsi yog cov ntaub pua plag siv rau hauv cov phiaj xwm ntom ntom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A ntaub pua plag yog a zaj ntawm cov ntaub ntawv rau ib qho kev sib txawv ntawm ib qho, tso tawm raws li cov cim raws li ib qho axis. Nws yog siv kom pom kev faib cov ntaub ntawv. Raws li xws li nws yog analogous rau ib tug histogram nrog xoom-dav bins, los yog ib tug ib-dimensional scatter. zaj.
Hais txog qhov no, dab tsi yog cov ntaub pua plag siv rau hauv cov phiaj xwm ntom ntom Courhero?
Cov rug () muaj nuj nqi tsim ib tug ib-dimensional zaj duab xis ntom , los hais txog kev faib tawm ntawm kev soj ntsuam.
Tsis tas li ntawd, ua li cas koj overlay ib qhov ntom ntom hauv R? 1 Teb
- Txhawm rau overlay cov phiaj xwm ntom ntom, koj tuaj yeem ua cov hauv qab no:
- Hauv lub hauv paus R cov duab, koj tuaj yeem siv cov kab () ua haujlwm. Tab sis nco ntsoov tias cov kev txwv ntawm thawj zaj dab neeg yog tsim nyog rau phiaj xwm thib ob.
- Piv txwv li: plot(density(mtcars$drat)) kab(density(mtcars$wt))
- Cov zis:
- Hauv ggplot2, koj tuaj yeem ua cov hauv qab no:
- Cov zis:
Nyob rau hauv no, dab tsi yog ib tug density zajlus?
A Qhov ntom ntom pom qhov kev faib tawm ntawm cov ntaub ntawv nyob rau ib ntus txuas ntxiv lossis lub sijhawm. Daim ntawv qhia no yog qhov hloov pauv ntawm Histogram uas siv cov ntsiav smoothing rau zaj muaj nuj nqis, tso cai rau smoother distributions los ntawm smoothing tawm lub suab nrov. Txawm li cas los xij, nrog Cov phiaj xwm ceev , qhov no tsis yog qhov teeb meem.
Dab tsi yog y axis hauv qhov ntom ntom?
Cov y - axis hauv a zaj duab xis ntom yog qhov tshwm sim ceev ua haujlwm rau lub kernel ceev kev kwv yees. Qhov txawv yog qhov tshwm sim ceev yog qhov tshwm sim ntawm ib chav nyob rau cov x - axis . Txhawm rau hloov mus rau qhov tshwm sim tiag tiag, peb yuav tsum nrhiav thaj chaw hauv qab qhov nkhaus rau lub sijhawm tshwj xeeb ntawm cov x - axis.
Pom zoo:
Dab tsi yog qhov ntom ntom ntom ntom ntom ntom ntom?
Ib daim phiaj density yog ib qho piv txwv ntawm kev faib cov lej sib txawv. Nws yuav siv ib ntsiav ceev kwv yees los qhia qhov tshwm sim ceev muaj nuj nqi ntawm lub nce mus nce los (saib ntxiv). Nws yog ib tug smoothed version ntawm lub histogram thiab yog siv nyob rau hauv tib lub tswvyim
Txoj kev faib cov ntaub ntawv twg muab cov ntaub ntawv sib npaug ntawm cov ntaub ntawv lossis cov kev tshuaj xyuas hauv txhua chav kawm cov ntaub ntawv?
Quantile. txhua chav kawm muaj cov yam ntxwv sib npaug. Ib qho kev faib tawm ntau yog zoo haum rau cov ntaub ntawv faib tawm. Quantile muab tib tus lej ntawm cov ntaub ntawv muaj nuj nqis rau txhua chav kawm
Dab tsi yog qhov txawv ntawm qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom nrog cov piv txwv?
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