Tengani maofesi kuchokera ku Excel kupita ku QGIS ndikupanga ma Polygons
Chimodzi mwazinthu zodziwika bwino pakugwiritsa ntchito Geographic Information Systems ndikumanga magawo azidziwitso kuchokera kumunda. Kaya izi zikuyimira ma coordinates, ma parcel voices, kapena grid okwera, zambiri zimapezeka m'mafayilo olekanitsidwa ndi koma kapena ma spreadsheet a Excel.
1. Chigawochi chimayang'anira fayilo ku Excel.
Pankhaniyi, ndikuyesera kuti ndilowetse anthu okhala Republic of Cuba, omwe ndawasungira diva-GIS, yomwe mwanjira ndi imodzi mwamasamba abwino kwambiri kutsitsa zidziwitso zakudziko lililonse. Monga mukuwonera, mizati B ndi C zili ndi chidziwitso chokhudza latitude ndi longitude motere zochitika za m'madera.
2. Lowetsani fayilo mu QGIS
Kuti mulowetse makonzedwe a fayilo ya Excel, yachitidwa:
Vector> Zida za XY> Fayilo ya OpenExcele ngati tebulo lazotsatira kapena Point wosanjikiza
Ngati fayiloyo imasungidwa ndikukulitsa kwa .xlsx, osatsegulayo sadzawonetsa, chifukwa imangosefa mafayilo okhala ndi .xls. Silo vuto, titha kugwiritsa ntchito njira zakale za DOS ndikulemba pakusintha dzina, fyuluta: *. * (asterisk dot asterisk) ndipo timalowa; izi zidzalola kuti mafayilo onse omwe ali pamalo amenewo awonekere. Tikadangolemba * .xls ndipo zikadangosefa mafayilo okhawo omwe ali ndi .xls extension.
Kenaka gulu likuwonekera momwe tiyenera kuwonetsera kuti ndi chiani chomwe chili chofanana ndi X coordinate, pakutero timasankha maulendo a longitude, latitude ya latitude ya Y yolumikiza.
Ndipo pamenepo tili nawo. Funsoli likuwonetsa kuti wosanjayo wasungidwa ndi zomwe zili mufayilo yakukhazikika kwa anthu aku Cuba, yomwe ili ndi dzina, latitude, longitude, classification, ndi boma loyang'anira.
3. Pangani ma polygoni kuchokera pamakonzedwe
Ngati tikufuna, sitifuna kungotumiza zowonongeka koma timapangitsanso polygon mu dongosolo la makonzedwe amenewa, tigwiritse ntchito pulojekiti Points2One. Pulagi iyi imakupatsani mwayi wodziwa momwe zosanjikiza zidzatchulidwire, ngati zomwe tiziitanitsa zidzamangidwa ngati mizere kapena polygon.
4. Momwe mungatumizire makonzedwe kuchokera ku Excel kupita ku mapulogalamu ena a CAD / GIS.
Monga mukukumbukira, tidachita izi ndi mapulogalamu ena ambiri. Zosavuta ngati QGIS, ndizochepa. Koma nayi momwe mungachitire ndi AutoCAD, Microstation, zobwezedwa GIS, AutoCAD Civil 3D, Google Lapansi.
