Tengani kafukufuku OpenStreetMap kuti QGIS
Kuchuluka kwa deta mkati OpenStreetMap ndizowonjezera, ndipo ngakhale kuti sizinasinthidwe, nthawi zambiri zimakhala zolondola kwambiri kuposa deta yomwe imakhala ikugwiritsidwa ntchito pogwiritsa ntchito mapepala a 1: 50,000.
Mu QGIS ndizosangalatsa kutsegula zosanjikiza ngati mapu monga maphunzilo a Google Earth, omwe mapulagulu alipo kale, koma iyi ndi mapu okha.
Bwanji ngati mukufuna kukhala otsegula OpenStreetMap ngati vector?
1. Tsitsani nkhokwe ya OSM
Kuti muchite izi, muyenera kusankha malo omwe mukuyembekezera kutsitsa deta. Ndizachidziwikire kuti madera akulu kwambiri, pomwe pali zambiri, kukula kwa nkhokwe kudzakhala kwakukulu komanso kumawononga nthawi. Kuti muchite izi, sankhani:
Vector> OpenStreetMap> Tsitsani
Apa mumasankha njira yomwe fayilo ya xml yokhala ndi .osm yowonjezera idzatsitsidwa. Ndikotheka kuwonetsa mtundu wa quadrant kuchokera pazomwe zilipo kale kapena momwe akuwonera pano. Mukasankha njirayo kuvomereza, ndondomeko yowunikira imayambira ndipo deta yowonongeka ikuwonetsedwa.
2. Pangani Database
Pamene fayilo ya XML imasulidwa, iyenera kutembenuza izi kukhala deta.
Izi zachitika ndi: Vector> OpenStreetMap> Tengani topology kuchokera ku XML ...
Pano tikufunsidwa kuti tilowe mu gwero, DB SpatiaLite pulogalamu yotulutsira ndipo ngati tikufuna kulumikizana kwachinsinsi kutengedwe nthawi yomweyo.
3. Itanani wosanjikiza ku QGIS
Kuitana deta monga wosanjikiza kumafuna:
Vector> OpenStreetMap> Tumizani topology ku SpatiaLite…,
Ziyenera kuwonetsedwa ngati titchula ma point, mizere kapena ma polygoni okha. Komanso ndi batani Katundu kuchokera ku nkhokweyo mutha kulemba zomwe ndizosangalatsa.
Zotsatira zake, tikhoza kusungira chingwe pamapu athu, monga momwe tawonetsera pa chithunzichi.
Inde, chifukwa OSM ndi njira yotseguka, idzatengera zambiri zogwiritsira ntchito payekha kuti muchite izi.
