This is brought about by using various georeferencing techniques. When data from different sources need to be combined and then used in a GIS application, it becomes essential to have a common referencing system. This procedure is thus imperative to data modeling in the field of geographic information systems (GIS) and other cartographic methods. Examples would include establishing the correct position of an aerial photograph within a map or finding the geographical coordinates of a place name or street address. The term is used both when establishing the relation between raster or vector images and coordinates, and when determining the spatial location of other geographical features. That is, establishing its location in terms of map projections or coordinate systems. Here is a short demonstration where I use a task to georeference a raster in less than a minute.To georeference something means to define its existence in physical space. In you are satisfied with the current alignment, in the Save group, choose how you want to save your georeference information.Īuto georeferencing does speed up your georeferencing workflows, however why not go one step further and incorporate the steps as a Task? Once the task has been created it then could be shared among fellow colleagues and could even further automate the entire process.In the Review group, click the Control Point Table button to evaluate the residual error for each control point and delete any unwanted control points.The system will attempt to match your raster to the reference layer. In the Adjust group, click Auto Georeference button.
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