2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Los ntawm 'spatial data' peb txhais tau data uas muaj . Complex values.
Koj txhais li cas los ntawm cov ntaub ntawv spatial?
Spatial data is any data with a direct or indirect reference to ib qhov chaw tshwj xeeb lossis thaj chaw thaj chaw. Cov ntaub ntawv spatial feem ntau hu ua geospatial cov ntaub ntawv lossis cov ntaub ntawv geographic.
piv txwv ntawm cov ntaub ntawv spatial yog dab tsi?
Piv txwv ntawm cov ntaub ntawv geospatial suav nrog:
- Vectors thiab cwj pwm: piav qhia txog qhov chaw xws li cov ntsiab lus, kab thiab polygons.
- Point huab: Ib qho kev sau los ntawm kev sib koom ua ke cov ntsiab lus uas tuaj yeem rov hais dua li 3D qauv.
- Raster thiab satellite duab: Cov duab daws teeb meem siab ntawm peb lub ntiaj teb, coj los ntawm saum toj.
Cov ntaub ntawv spatial thiab cov ntaub ntawv tsis yog dab tsi?
Tam sim no muaj ob hom ntaub ntawv yooj yim uas koj yuav tsum paub: cov ntaub ntawv spatial thiab non-spatial. Cov ntaub ntawv spatial, tseem hu ua cov ntaub ntawv geospatial, yog cov ntaub ntawv uas tuaj yeem txuas mus rau ib qho chaw tshwj xeeb hauv ntiaj teb. … Cov ntaub ntawv tsis-spatial yog cov ntaub ntawv uas tsis tuaj yeem taug qab mus rau qhov chaw tshwj xeeb.
Cov ntaub ntawv spatial sau li cas?
Txoj kev tshaj plaws ntawm kev sau cov ntaub ntawv spatial yog siv lub ntiaj teb qhov chaw tso qhov system (GPS) txais. Kev sau cov ntaub ntawv GPS tuaj yeem ua tiav nrog lub koom haum GPS siab, uas sib txuas lus nrog lub hnub qub ntawm satellites los ntsuas qhov chaw ntawm GPS chav nyob ntawm lub ntiaj teb saum npoo.
Pom zoo:
Cov ntaub ntawv qhia ntawv puas txhawb nqa cov ntaub ntawv kawm?
Cov ntaub ntawv qhia yuav tsum txhawb nqa txoj kev kawm lub tswv yim, cov hom phiaj thiab cov hom phiaj ntawm Cheeb Tsamthiab cov hom phiaj ntawm cov ntaub ntawv kawm uas cov ntaub ntawv yuav raug siv. … Cov ntaub ntawv qhia yuav tsum ua tau raws li cov qauv zoo ntawm cov ntsiab lus tseeb thiab kev nthuav qhia.
Dab tsi yog peb cov ntaub qhwv cov ntaub so ntswg hauv cov leeg?
Cov ntaub so ntswg interstitial ntawm cov leeg yog subdivided rau hauv epimysium epimysium Lub epimysium yog cov ntaub so ntswg ntom ntom uas nyob ib puag ncig tag nrho cov leeg nqaij. Lub epimysium feem ntau muaj ntau pob (fascicles) ntawm cov leeg nqaij.
Thaum cov ntaub ntawv tshiab cuam tshuam nrog kev muab cov ntaub ntawv qub no hu ua?
Nrog retroactive cuam tshuam, cov ntaub ntawv tshiab cuam tshuam lub peev xwm rov qab cov ntaub ntawv qub. Nrog kev cuam tshuam tsis zoo, nws yog qhov rov qab: cov ntaub ntawv qub cuam tshuam qhov rov qab los ntawm cov ntaub ntawv tshiab tau kawm.
Puas yog cov ntaub ntawv sib tw cov ntaub ntawv raug cai?
Kev tsim "Cov ntaub ntawv cog lus" yog cov ntaub ntawv sau uas txhais lub luag haujlwm, kev lav phib xaub, thiab "Ua haujlwm" raws li Daim Ntawv Cog Lus Tsim Kho, thiab raug cai lij choj rau ob tog (Tswj thiab tus neeg cog lus).
Cov ntaub ntawv twg muaj cov ntaub ntawv bituminous?
Nws muaj ob chav kawm ntawm cov khoom siv bituminous: (1) asph alt; thiab (2) tar. Cov ntaub ntawv no feem ntau yog siv los ua dej-pov thawj sealants, thiab ua cov ntaub ntawv los tuav cov aggregate ua ke nyob rau hauv bituminous pavements. Dab tsi yog cov khoom siv bituminous?
