Video: Kev tswj cov ntaub ntawv geospatial yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Geospatial database tswj systems, hloov pauv, suav nrog kev ua haujlwm ntawm DBMS tab sis kuj tseem muaj cov ntaub ntawv thaj chaw tshwj xeeb txog txhua tus cov ntaub ntawv taw tes xws li tus kheej, qhov chaw, cov duab, thiab kev taw qhia.
Kuj nug, cov ntaub ntawv geospatial siv rau dab tsi?
Geospatial cov ntaub ntawv analytics cia siab rau thaj chaw tswj hwm thiab cov cim tshwj xeeb xws li chaw nyob thiab zip code. Lawv yog siv rau tsim geographic qauv thiab cov ntaub ntawv visualizations rau kev ua qauv zoo dua thiab kev kwv yees ntawm cov qauv.
Qhov thib ob, kev tswj cov ntaub ntawv spatial yog dab tsi? Abstract. Spatial database tswj deals nrog kev cia, indexing, thiab querying cov ntaub ntawv nrog qhov chaw nta, xws li qhov chaw thiab geometric raws. Ntau daim ntawv thov xav tau kev ua haujlwm zoo kev tswj hwm ntawm cov ntaub ntawv spatial , suav nrog Geographic Information Systems, Computer Aided Design, thiab Cov Kev Pabcuam Hauv Qhov Chaw.
Tsis tas li ntawd, qhov piv txwv ntawm cov ntaub ntawv geospatial yog dab tsi?
Geospatial cov ntaub ntawv yog cov ntaub ntawv hais txog tej yam khoom, xwm txheej, lossis phenomena uas muaj qhov chaw nyob rau saum npoo av. Rau piv txwv , txoj kev, thaj chaw, dej hiav txwv, thiab pej xeem amenities yog pab tau raws li cov ntaub ntawv siv rau ntau lub hom phiaj.
Cov ntaub ntawv geospatial khaws cia li cas?
Geospatial cov ntaub ntawv tuaj yeem yog khaws cia hauv cov lus yooj yooj yim xws li comma-separate variable (CSV) cov ntaub ntawv raws li kab latitude thiab longitude txuam rau txhua kab nrog cov cwj pwm tshwj xeeb ntawm cov latitudes thiab longitudes. Txawm li cas los xij, qhov no feem ntau txwv rau cov ntsiab lus, tsis yog thaj chaw.
Pom zoo:
Cov ntaub ntawv dab tsi ua rau cov ntawv sau npe hauv cov tshuaj formula muab?
Cov ntawv lossis cov ntawv uas sawv cev rau lub ntsiab lus hu ua nws lub cim atomic. Cov lej tshwm sim raws li cov ntawv sau npe hauv cov qauv tshuaj qhia txog tus lej ntawm atoms ntawm lub caij tam sim ua ntej subscript. Yog tias tsis muaj subscript tshwm sim, ib qho atom ntawm lub ntsiab yog tam sim no
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
Cov yam ntxwv ntawm cov ntaub ntawv twg yog qhov ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis heev?
Variation: Ib qho kev ntsuas ntawm tus nqi uas cov ntaub ntawv muaj nuj nqis sib txawv. ? Kev faib tawm: Cov xwm txheej lossis cov duab ntawm kev sib kis ntawm cov ntaub ntawv hla ntau qhov tseem ceeb (xws li tswb-puab). ? Outliers: Cov qauv piv txwv uas nyob deb heev ntawm feem ntau ntawm lwm cov qauv nqi
Thaum muab piv cov qauv sau rau ib tus neeg raug liam cov ntaub ntawv lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub tshaj kaum ob lub hlis?
Thaum piv cov qauv sau rau tus neeg raug liam? cov ntaub ntawv, lub hnub nyoog sib txawv ntawm cov ntaub ntawv yuav tsum tsis pub ntau tshaj rau rau kaum ob lub hlis. Tus lej txaus ntawm tus qauv yog qhov tseem ceeb rau kev txiav txim siab qhov tshwm sim ntawm kev sib piv
Dab tsi yog cov cuab yeej lossis cov ntaub ntawv uas tus Kws Tshawb Fawb xav tau los txheeb xyuas cov ntaub ntawv nug?
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry