Ib cov ntaub ntawv nrog HGT cov ntaub ntawv txuas ntxiv yog Daim Ntawv Qhia Cov Xov Tooj Hauv Cov Xov Tooj Pab Tub Rog (SRTM).
HGT cov ntaub ntawv muaj cov qauv kev ua qauv, uas yog 3D daim duab ntawm ib ntu - feem ntau yog ib lub ntiaj teb, tau thaum lub sij hawm ntawm Lub Chaw Haujlwm Shuttle Radar Topography (SRTM) los ntawm NASA thiab National Geospatial Intelligence Agency (NGA).
Siv ntawm no, "HGT" tsuas yog lo lus luv luv rau "qhov siab." Cov ntaub ntawv .GGT feem ntau muaj npe nrog qhov sib thooj thiab latitude tias daim duab nrog rau, hauv ib qib. Piv txwv, cov ntaub ntawv N33W177.hgt yuav qhia tau tias nws muaj cov ntaub ntawv latitudes 33 mus rau 34 Sab Qaum Teb thiab longitudes 177 txog 178 West.
Lus Cim: Cov ntaub ntawv SRTM cov ntaub ntawv tsis muaj dab tsi ua nrog SRT ntaub ntawv.
Yuav ua li cas qhib ib HGT Cov Ntaub Ntawv
HGT ntaub ntawv yuav qhib nrog VTBuilder, ArcGIS Pro, thiab Kev Nyab Xeeb Qhov Kev Kawm FME Desktop. DG Terrain Viewer ua haujlwm, ib yam nkaus thiab, ob qho tib si ntawm Windows thiab Linux. Koj tuaj yeem tau import HGT ua ntaub ntawv rau hauv rab nrog cov blender-osm addon.
Lus Cim: Yog tias koj siv VTBuilder qhib koj cov ntaub ntawv HGT, nws tsis ua tiav nyob rau hauv Open Menu zaub mov. Xwb, koj yuav tsum xa cov ntaub ntawv mus rau hauv qhov kev pab cuam los ntawm Layer> Import Data> Elevation menu.
Saib ntawm Lub Xov Tooj Pabcoj Lub Xov Tooj Hauv Xov Tooj, uas yog NASA Davis Propulsion Laboratory, rau tag nrho cov ntsiab lus ntawm SRTM cov ntaub ntawv, uas tuaj nyob hauv HGT hom ntawv. Cov ntaub ntawv nws tus kheej tau downloaded los ntawm SRTM nplooj ntawv los ntawm Teb Chaws Asmeskas Teb Geological Survey.
Muaj kuj yog ib qho zoo heev, ntawm no, ntawm SRTM thiab cov ntaub ntawv ua. Lub website USGS kuj muaj qee cov ntaub ntawv ntxiv, ntawm no , hauv PDF .
Ntsis: Yog tias koj muaj HGT cov ntaub ntawv uas koj paub tsis yog ua ntaub ntawv SRTM, los yog nws tsis ua hauj lwm nrog cov software uas koj tau nyeem txog saum toj no, nws yuav yog tias koj cov ntaub ntawv HGT ua tau nyob rau hauv ib qho txawv nkaus hom . Yog tias muaj, siv cov ntawv nyeem los hloov cov ntaub ntawv. Qee zaum , nws muaj cov ntawv pov thawj nyob rau hauv cov ntaub ntawv uas tuaj yeem pab koj nkag siab txog qhov kev pab cuam siv los txhim kho cov ntaub ntawv, uas yuav tsum qhia koj ntxiv rau hom ntawv.
Yog tias koj pom tias ib qho kev pab cuam ntawm koj lub computer sim qhib HGT cov ntaub ntawv, tab sis nws yog daim ntawv thov kev tsis ncaj ncees los sis yog tias koj xav tau lwm qhov kev pab cuam qhib cov ntaub ntawv no, mus saib peb Li Cas Hloov Qhov Kev Pab Cuam Tshuam rau Cov Lus Qhia Ntxiv pab hloov cov chaw no.
Yuav ua li cas Hloov HGT Cov Ntaub Ntawv
VTBuilder tuaj yeem xa cov ntaub ntawv HGT mus rau ib tus qauv Binary Strain (.BT). Ua li no, thawj cov ntaub ntawv HGT cov ntaub ntawv ( Layer> Import Data> Elevation ) thiab mam li txuag nws uas siv cov Layer> Txuag Txheej Li ... kev xaiv.
VTBuilder kuj txhawb nqa cov ntaub ntawv HGT rau PNG , TIFF , thiab ntau tus lwm yam, thiab tsis yog li ntawd, cov duab thiab cov ntaub ntawv tawm tswv yim.
Hauv ArcGIS Pro, nrog rau HGT cov ntaub ntawv twb qhib rau hauv qhov kev pab cuam, koj yuav tsum tau mus rau Export> Raster kom txawv hom kom txuag tau HGT ntawv nyob rau hauv ib hom ntawv tshiab.
Lwm cov kev pab saum toj no tuaj yeem hloov HGT cov ntaub ntawv, ib yam nkaus thiab. Qhov no yog ua los ntawm kev xaiv Export lossis ib daim Ntawv Cuam Tshuam.