Landa amamephu emigwaqo kusuka ku-Google Earth
Ngokwazi kwethu, alukho uhlelo (okwamanje) olungalanda imigwaqo yeGoogle Earth ngefomethi ye-vector. Yize ukwazi kusuka ku-Open Street Maps, kubi kakhulu ukuthi akuveli kuwo wonke amadolobha.
Kepha uma othile ebenesithakazelo emigwaqweni yeGoogle Earth, khona-ke indlela yokuphuma iwukuzilanda njengesithombe, bese uzifaka njengesilwane kubo. Nawa amanye amathiphu wokwehlisa izinga lobudlova:
I-1 Beka umfanekiso wesithombe esimnyama
Lokhu sikwenzela ukuthi isithombe sesathelayithi singavimbi futhi sithuthukise ukubonakala kwemigwaqo. Isithombe esimnyama se-bmp senziwa eMspaint futhi sabizwa kusuka kuGoogle Earth, siselula ngaphezu kwendawo oyithandayo.
I-2 Landa isithombe nge-Stitchmaps
Manje, usebenzisa I-Stitchmaps, sakhetha i-mosaic evumela ukuthi sibone imibhalo yobukhulu obungaphansi kwevector yomgwaqo.
Bheka ukuthi, nakuba i-Google Earth ingazange ibone yonke imigwaqo ekuphakameni kwesithombe, i-Stitchmaps yikho konke, sikhetha ukuphakama okuphansi, kulesi simo amamitha angu-384.
Lapho umbala we-mosaic uchaziwe, si-oda ukulanda, bese silinda ukuthi i-mosaic ihambisane. ekugcineni siyisindisa ngefomethi ye-tiff, nangefayela lokulinganisa le-OziExplorer (.map). Isithombe sibukeka kanjena: isithombe ngakwesokudla ukukhuliswa:
Njengomzali, uma sifuna ukuyiguqula ibe ngu - .ecw, ku I-Global Mapper siyiletha, sinikeze ukuqagela kuyo bese siyitshela ukuthi ikulungise kusuka kufayela le-.map. Ngemuva kwalokho ingathunyelwa ku- .ecw yokuphathwa kangcono kusuka kolunye uhlelo.
I-3 Yenza i-Digitize ngehlelo lokuhlela
Ukudweba umugqa ngomugqa kungase kube ukucasula kwesigamu, uma ufuna ukuhamba ngokushesha, ungasebenzisa uhlelo lokuhlela ngokuzenzekelayo, njenge-Microstation Descartes.
Kuyaqondakala ukuthi isithombe se-.ecw si-georeferenced, (nakuba kungenzeka kusuka ku-Descartes), okuzayo ukuguqula isithombe sibe i-vector, ngenqubo efanayo esiyikhombisayo kokuthunyelwe kwangaphambilini.
Isifihla-buso senzelwa amathoni aphuzi, bese esinye senzelwa amathoni ampunga bese siyasitshela ukuthi sibaguqulele kusivikethi esinokuhlanzwa kwendawo. Ingxenye lapho umbhalo ukhona ngeke idale i-vector, kuzofanele senze inyunyana ihambe ngezinyawo, noma ngabe ufuna ukusizakala ngabakwaDescartes, kungenzeka ukuthi aguqule wonke lawo mathoni wombhalo abe mpunga yomgwaqo, yingakho sayenza yancipha. Uma lo mbhalo uzofakwa i-vectorised, sebenzisa umyalo wombhalo oqondiswe ngqo.
I-4 Uma kungenayo i-Microstation Descartes
Kufanele futhi isebenze okufanayo nge-AutoDesk I-Raster Design, I-ArcScan, GIS ezininginingi, ngisho neCorel Trace.
I-athikili isuka ku-2009 futhi igxile esidingweni sokuyenza ngomsebenzi we-Microsation's Trace. Kunezinye izindatshana ezichaze ukuthi kwenziwa kanjani kusuka ku-OSM kusetshenziswa i-QGIS.
futhi kungani ungasebenzisi i-qgis futhi ugwema lezo zinyathelo eziningi futhi usebenza
Bacaphuna lapha basekhaya: http://geomarketingspain.blogspot.com/
Sawubona Javier, i-Inkscape iyindlela ehlukile kakhulu yokusebenza ku-Corel Draw
Okuthunyelwe okuhle,
Ngengeza i-Inkscape (mahhala) ukuze ihlukanise
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