Down txoj kev maps ntawm Google lub ntiaj teb
Txog peb txoj kev paub, tsis muaj ib qho program (tseem) uas tuaj yeem rub tau Google Earth txoj hauv kev vector hom. Txawm hais tias koj tuaj yeem tau los ntawm Qhib Street Maps, dhau los tsis zoo tsis muaj los ntawm txhua lub nroog.
Tab sis yog tias ib tug neeg txaus siab nyob hauv txoj kev ntawm Google Earth, ces txoj kev tawm mus rub lawv li duab, thiab tom qab ntawd vectorize zoo li cov tsiaj nyaum ntawm lawv. Nov yog qee qhov kev qhia ua kom txo qis qib ntawm kev lav ris:
1. Muab ib daim duab dub dub
Peb ua qhov no, yog li ntawd cov duab satellite tsis cuam tshuam thiab txhim kho qhov pom kev ntawm cov kev. Daim duab dub bmp yog tsim hauv Mspaint thiab nws yog hu los ntawm Google Earth, ncab nws hla thaj chaw ntawm kev txaus siab.
2. Download tau daim duab nrog Stitchmaps
Tam sim no, siv Stitchmaps, peb xaiv ib lub mosaic uas tso cai rau peb pom cov ntawv ntawm ib lub thickness tsawg tshaj li ntawm vector ntawm txoj kev.
Pom li cas, txawm hais tias Google ntiaj teb tsis pom txhua txoj kev ntawm qhov siab ntawm daim duab, Stitchmaps yog tag nrho, peb xaiv qis dua, qhov no 384 meters.
Thaum cov mosaic tau txhais tau, peb xaj mus rub tawm, thiab tos rau daim ntaub mosaic tau ua raws. Thaum kawg peb khaws nws nrog tiff hom ntawv, thiab nrog cov ntaub ntawv ntsuas kom OziExplorer (.map). Daim duab zoo li qhov no: daim duab ntawm sab xis yog qhov nthuav dav:
Raws li tus parenthesis, yog tias peb xav hloov nws .ecw, nyob rau hauv Ntiaj teb no Mapper peb nqa nws, muab nws qhov projection thiab qhia nws kom kho nws los ntawm .map. Tom qab ntawd nws tuaj yeem raug xa mus rau .ecw kom zoo dua kev tuav los ntawm lwm qhov haujlwm.
3. Digitize nws nrog ib qhov kev pab cuam plotting
Kos kab ntawm kab yuav yog ib qho kev nyuab siab, yog tias koj xav txav ceev, koj tuaj yeem siv lub phiajxwm kev siv plawg, xws li Microstation Descartes.
Nws to taub tias tus duab .ecw yog georeferenced, (txawm tias nws yuav ua tau ntawm Descartes), dab tsi los ua yog los hloov cov duab mus rau lub vector, nrog cov txheej txheem ib yam uas peb pom hauv ib qho dhau los.
Ib daim npog qhov ncauj yog tsim rau lub suab lus daj, thiab lwm qhov rau lub suab grey thiab tom qab ntawd peb qhia nws kom hloov lawv mus rau lub vector nrog kev tu ntawm topological. Ntu uas cov ntawv nyeem nyob qhov twg, vector yuav tsis tsim, peb yuav tsum tau ua kev koom ua ke nrog ko taw, txawm hais tias yog tias koj xav tau ua kom zoo dua ntawm Descartes, nws yog qhov tau hais tias nws yuav hloov tag nrho cov suab nrov ntawm cov ntawv nyeem rau lub grey ntawm txoj kev, yog vim li cas nws peb ua nws me dua. Yog tias cov ntawv yuav tsum tau vectorized, siv cov lus txib rau cov ntawv sau tseg.
4. Nyob rau hauv cov ntaub ntawv ntawm tsis muaj Microstation Descartes
Nws yuav tsum ua haujlwm zoo sib xws nrog AutoDesk Raster Tsim, ArcScan, manifold GIS, thiab txawm tias Corel Trace.
Tsab ntawv yog los ntawm 2009 thiab tsom mus rau qhov yuav tsum tau ua nrog Microsation's Trace function. Muaj lwm cov ntawv uas tau piav qhia yuav ua li cas los ntawm OSM siv QGIS.
thiab vim li cas ho tsis koj siv qgis thiab koj tsis txhob muaj ntau cov kauj ruam thiab ua haujlwm
Lawv cim koj ntawm no compatriot: http://geomarketingspain.blogspot.com/
Kuv tuaj los Javier, Inkscape yog lwm txoj haujlwm zoo heev rau Corel Draw
Ntxim hlub ncej,
Kuv ntxiv Inkscape (pub dawb) rau vectorize
Kev txais tos rau koj