Shigo da bayanai daga OpenStreetMap zuwa QGIS
Adadin bayanai da akwai OpenStreetMap yana da yawa, kuma ko da yake ba cikakke ba ne, a mafi yawancin lokuta ya fi daidai da yadda aka tattara bayanai ta al'ada ta hanyar zane-zane tare da girman 1: 50,000.
A QGIS yana da kyau a yi amfani da wannan Layer a matsayin taswirar bango kamar siffar Google Earth, wanda abin da aka riga ya riga ya kasance, amma wannan batu ne kawai.
Menene ya faru idan abin da kake so shi ne samun LayerStreetMap Layer a matsayin fom?
1. Zazzage bayanan OSM
Don yin wannan, dole ne ku zaɓi yankin da kuke tsammanin zazzage bayanai. A bayyane yake cewa manyan yankuna, inda akwai bayanai da yawa, girman bayanan zai zama babba kuma yana cin lokaci. Don yin wannan, zaɓi:
Vector> OpenStreetMap> Saukewa
Anan kun zaɓi hanyar da za a sauke fayil din xml tare da .osm tsawo. Zai yuwu a nuna kewayen murabba'i daga layin da ya kasance ko ta hanyar nuni na yanzu na ra'ayi. Da zarar an zaɓi zaɓi yarda da, tsarin saukewa farawa kuma ƙarar bayanai da aka sauke suna nunawa.
2. Createirƙiri Database
Da zarar an sauke fayil na XML, abin da ake buƙata shi ne maida shi zuwa cikin wani babban fayil.
Ana yin wannan tare da: Vector> OpenStreetMap> Shigo da topology daga XML ...
A nan an umarce mu mu shigar da asusun, asusun ajiyar DB na SpatiaLite kuma idan muna so an haɗu da haɗin shiga a nan da nan.
3. Kira Layer zuwa QGIS
Kira bayanai azaman Layer yana buƙatar:
Vector> OpenStreetMap> Expo topology zuwa SpatiaLite ...,
Dole ne a nuna shi idan za mu kira maki kawai, layi ko polygons. Hakanan tare da maɓallin Load daga rumbun adana bayanan zaku iya lissafa waɗanda sune abubuwan sha'awa.
A sakamakon haka, zamu iya ɗaukar ma'auni a taswirarmu, kamar yadda aka gani a cikin hoton da ke gaba.
Tabbas, tun lokacin da OSM ya zama saitunan budewa, zai kasance dogon lokaci don kayan aikin kayan aiki na yin wannan irin abu.
