Video: Dab tsi yog qhov ntom ntom hauv R?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A zaj duab xis ntom qhia qhov kev faib tawm ntawm tus lej hloov pauv. Hauv ggplot2, geom_density() muaj nuj nqi saib xyuas cov ntsiav ceev kev kwv yees thiab zaj qhov tshwm sim. Ib txoj haujlwm ntau hauv dataviz yog los sib piv cov kev faib tawm ntawm ntau pawg. Qhov yooj yim tshaj plaws zaj duab xis ntom koj tuaj yeem ua nrog ggplot2.
Ntawm no, dab tsi yog daim phiaj xwm ceev?
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.
Ib sab saum toj, dab tsi yog qhov ntsuas qhov ntom ntom? Raws li thaj tsam ntawm ib lub bar sawv cev rau qhov zaus ntawm nws lub sijhawm, qhov siab ntawm qhov bar sawv cev rau qhov ceev . Yog tias koj sau qhov txaus ntshai nws yog zaus ib chav tsev lossis, yog tias koj faib los ntawm tag nrho cov zaus, txheeb ze zaus ib chav.
Xav txog qhov no, dab tsi yog daim ntaub pua plag siv rau hauv cov phiaj xwm ntom ntom?
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.
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:
Ib qho piv txwv ntawm qhov ntom ntom yog dab tsi?
Qhov ceev-dependant yam muaj xws li kev sib tw, predation, parasitism thiab kab mob
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
Dab tsi yog vim li cas ntawm qhov ntom ntom ntom?
Ntawm cov kua-cua sib cuam tshuam, qhov nro ntawm qhov chaw tshwm sim los ntawm kev nyiam ntawm cov kua molecules ntau dua rau ib leeg (vim kev sib koom ua ke) dua li cov molecules hauv huab cua (vim adhesion)
Dab tsi yog qhov txawv ntawm qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom nrog cov piv txwv?
Nws ua haujlwm nyob rau hauv ob qho tib si loj thiab me me thiab tsis yog raws li cov pej xeem ceev. Ceev dependent yam yog cov uas tswj cov kev loj hlob ntawm ib tug pej xeem nyob rau ntawm nws lub ceev thaum ceev ywj siab yam yog cov uas tswj pejxeem kev loj hlob yam tsis muaj nyob rau nws cov ceev
Lub raj mis ntom ntom siv li cas los nrhiav qhov ntom ntawm cov kua?
Qhov loj thiab qhov loj ntawm cov molecules nyob rau hauv cov kua thiab ze npaum li cas lawv tau ntim ua ke txiav txim siab qhov ntom ntawm cov kua. Ib yam li cov khoom, qhov ntom ntawm cov kua sib npaug ntawm cov kua faib los ntawm nws qhov ntim; D = m/v. Qhov ceev ntawm cov dej yog 1 gram ib cubic centimeter