At its simplest this means overlaying two maps on top of each other and having a look. This one makes me dreamy! Relating maps is such an incredibly powerful feature of most GISs. Zooming and panning is functionality we’re all familiar with Relating maps For example…houses built in the 1800s, towns where the average income is low, places where the vegetation quality is poor, etc. In QGIS though, you can search for something in your own maps. Google maps has given most of us the functionality to search for an address. This is something most of us are familiar with. Taken to an extreme, no more storage facilities for maps and maps produced on demand with the latest version of the map! Searching maps Of course you could imagine that a GIS would have to store maps…but what an incredible difference this functionality has made to the mapping industry. Whichever input method you choose, the things you’ve traced will need further editing and then processing using QGIS map editing modules so that the maps are then usable to QGIS. Another path is to bring a scanned paper map into QGIS and then, similarly to the digitizing tablet method, trace map features with a mouse. One path is placing a map on a digitizing tablet and tracing all the points, lines and areas with a (mouse like) puck. This is the conversion of paper maps into maps that can be used in the GIS. Quntum GIS can do everything in this definition so lets pull the definition apart a bit… Capturing mapsīy this, I mean digitizing. What a Geographical Information System?Ī GIS is a computer application that allows you to capture, store, search, manipulate, relate and manage maps and information about them. In order to understand what Quantum GIS is, lets have a quick look at what a Geographical Information System is.
Its been around since around 2002 and these days is similarly functional to commercial Geographical Information Systems. What is Quantum GIS (QGIS) – its a brand of Geographical Information System that is Open Source and so free.
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