Ngenisa idatha kusuka ku-OpenStreetMap kuya ku-QGIS
Inani lemininingwane ekhona I-OpenStreetMap likhulu kakhulu, futhi nakuba lingalokothi lifinyeleleke, ezimweni eziningi liyiqiniso kunemininingwane ejwayelekile ngokulayishwa ngamashidi e-cartographic ngezinga le-1: 50,000.
Ku-QGIS kuhle ukulayisha lo ungqimba njengemephu yangemuva njengemifanekiso ye-Google Earth, okuyiwona ama-plugin asekhona kakade, kodwa lokhu kuyimephu yangemuva kuphela.
Kwenzekani uma lokho okufunayo kufanele kube nekholomu le-OpenStreetMap njenge-vector?
1. Landa i-database ye-OSM
Ukuze wenze lokhu, kufanele ukhethe indawo lapho ulindele ukulanda khona idatha. Kusobala ukuthi izindawo ezinkulu kakhulu, lapho kunolwazi oluningi khona, ubukhulu be-database buzoba bukhulu futhi budle isikhathi. Ukuze wenze lokhu, khetha:
Vector> OpenStreetMap> Landa
Lapha ukhetha indlela lapho kuzolandwa khona ifayili le-xml elinesandiso se-.osm. Kungenzeka ukhombise ububanzi be-quadrant kusuka kusendlalelo esivele sikhona noma ngesibonisi samanje sokubuka. Lapho inketho isikhethiwe ukwamukela, inqubo yokulanda iqala futhi ivolumu yedatha elayishiwe iboniswa.
2. Dala i-Database
Uma ifayela le-XML selilayishiwe, okudingekayo ukuyiguqula ibe yidatha.
Lokhu kwenziwa nge: Vector> OpenStreetMap> Ngenisa topology kusuka kuXML ...
Lapha usicela ukuthi singene emthonjeni, ifayela elikhishiwe leDB SpatiaLite futhi uma sifuna ukuxhumeka kwangaphandle ukuthi kudalwe ngokushesha.
3. Shayela ungqimba ku-QGIS
Ukushayela idatha njengesendlalelo kudinga:
Vector> OpenStreetMap> Thumela i-topology ku-SpatiaLite ...,
Kumele kuboniswe uma sizobiza kuphela amaphuzu, imigqa noma amapholigoni. Futhi ngenkinobho Layisha kusuka ku-database ungayibhala okuyizinto ozithandayo.
Ngenxa yalokho, singakwazi ukulayisha ungqimba kumephu yethu, njengoba kuboniswe esithombeni esilandelayo.
Yiqiniso, ngoba i-OSM iyinhlangano yomthombo ovulekile, kuyoba yisikhathi eside amathuluzi angasese ukwenza lohlobo lwento.