Yuav ntev npaum li cas cov ntaub ntawv cov ntaub ntawv muaj sia nyob?

Rau ib pliag kuv xav tias cov qauv ntawv axf yog qhov kev hloov rau ESRI puab cov ntaub ntawv; tab sis theej behaves xws li ib tug geodatabase rau ArcPad, uas implies tias ESRI yuav insist ntawm kev ua peb raug kev txom nyem nrog lub hom ntawv shp.

Qhov teeb meem

Shp hom weaknesses yog nws muaj hnub nyoog, khaws koj cov ntaub ntawv nyob rau hauv tabular daim ntawv raws li yog yuav luag 20 xyoo tsis tau muaj tsim kom muaj kev sib raug zoo thiab dispersal ntawm me me ntaub ntawv uas cia qhov sib txawv yam ntxwv thiab cov kev cai ntawm vector ntaub ntawv.

ESRI tau tshaj tawm nws cov phom yog ib hom rau Arcpad siv uas los ntawm 7.1 version tau lis cov ntxhuav uas koj tuaj yeem muaj xws li cov cwj pwm, them, projection thiab lwm yam ntxwv uas cov me nyuam yaus ua tsis tau.

Txawm hais tias qee tus tau qw rau saum ntuj hais tias "peb puas xav tau lwm hom ntaub ntawv spatial?", ESRI hais tias nws tsis yog hom tshiab tab sis zoo li lub geodatabase nws yog cov qauv ntawm cov cai rau cov ntaub ntawv spatial ua rau Microsoft SQL Server Compact Edition (SQLCE) ... nyob rau hauv kev txiav txim siab tsis meej, tib lub geodatabase uas ntau tus tau thuam tias muaj qhov API txhav dhau.

... tej zaum nws yuav tsis yog hom ntawv tshiab tab sis nws ntxiv qhov nyuaj rau cov khoom lag luam geospatial, txhua tus tam sim no yuav tsum tsim dua lwm cov txheej txheem los cuam tshuam nrog cov hom ntawv no.

Thiab qhov twg yog qhov txiav txim yuav ua li cas?

• Sau cov ntaub ntawv zoo li cov ntaub ntawv hauv cov ntaub ntawv, cov cwj pwm ntawm cov ntaub ntawv zoo lawm hauv dbf... nyob rau hauv BLOB (Binary loj yam khoom) nyob rau hauv cov tiaj tus kheej hauv cov style dbf ... thiab ntaus nws nrog lub dbf.
• Ces nyob rau hauv lwm lub rooj yog cov metadata xws li projection, symbology, cov ntaub ntawv thiab cov ntawv sau.
• Cov khoom ntawm shapefiles, nrog lawv cov khaubncaws sab nraud povtseg thiab lwm yam kev ua tiav, suav tau tias yog cov ntaub ntawv nkaus xwb.
• Koj tuaj yeem ua ke nrog cov geodatabase, lees txais thawj, subtypes thiab kev sib raug zoo ... Kuv xav tias tseem muaj cov cai topological thiab cov kab ke geoprocessing.

Resultados

Hauv kev xyaum, ib tus neeg nrog GPS tuaj yeem mus rau tom teb, ua cadastral kev saib xyuas ntawm daim duab qhia (tsis yog cov qauv yooj yim) zoo li yog lawv tau ua haujlwm nrog lawv lub desktop platform, txiav txim siab tias muaj topological kev ncaj ncees los ntawm splices thiab xa cov ntaub ntawv ntawm gsm rau cov ntaub ntawv hauv nruab nrab ... uas koj tsis tuaj yeem ua qhov no? ... oh, thov txim, nrog ArcPad!

Coob ntseeg tias yog ESRI hais txog kev tiv thaiv nws cov dino-shapefile, ib hnub cov hom xml (kml, gml) yuav noj nws ciaj sia ... tsis muaj teeb meem yog tias koj yuav txiv nrog Microsoft.