Q-GIS आधारभूत देखि उन्नत सम्म

तपाइँको कम्प्यूटर मा सफ्टवेयर डाउनलोड र स्थापना गर्न सिक्नुहोस्

फाइल: यसले डिस्कमा भण्डारण गरिएका फ्ल्याट फाइलहरू लोड गर्न सक्छ। सामान्यतया प्रयोग हुने फ्ल्याट फाइल प्रकारहरू निम्नानुसार छन्:

° ESRI shapefile (.shp)

° GeoJSON (.geojson)

° Geography Markup Language (.gml)

° AutoCAD DXF (.dxf)

° Comma separated values (.csv)

° GPS eXchange Format (.gpx) A Refreshing Look at QGIS [ 10 ]

° Keyhole Markup Language (.kml)

SQLite/SpatiaLite (.sqlite/.db)

Vector data is arguably the most common kind of data in the daily use of GIS. The vector model represents the location and shape of geographic features using points, lines and polygons (and for 3D data also surfaces and volumes), while their other properties are included as attributes (often presented as a table in QGIS).

Up to now, none of the changes we have made to the map have been influenced by the objects that are being shown. In other words, all the land use areas look alike, and all the roads look alike. When looking at the map, the viewers don’t know anything about the roads they are seeing; only that there is a road of a certain shape in a certain area.

But the whole strength of GIS is that all the objects that are visible on the map also have attributes. Maps in a GIS aren’t just pictures. They represent not only objects in locations, but also information about those objects.

Labels can be added to a map to show any information about an object. Any vector layer can have labels associated with it. These labels rely on the attribute data of a layer for their content.