Geo-Information Systems You Can Count On............. |
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What We Offer |
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Geographic Information Systems is a technology that is used to view and analyze data from a geographic perspective. The technology is a piece of an organization's overall information system framework. GIS links location to information (such as people to addresses, buildings to parcels, or streets within a network) and layers of information to give you a better understanding of how it all interrelates. You choose what layers to combine based on your purpose. We use a variety of methods to enter data into our GI Systems.Existing data printed on paper or mylar maps can be digitized or scanned using our top-of-the-range scanners to produce the digital data we need. After entering data into the GIS, we edit and to remove errors. We makesure everything is correct before it is used for advanced analysis. For example, in a road network, lines will connect with nodes at an intersection. Errors such as undershoots and overshoots are removed. For scanned maps, blemishes on the source map are removed from the resulting raster. For example, a fleck of dirt might connect two lines that should not be connected. The end result is computer aided design with a difference. GIS is only one Astra CAD's areas of expertrise. Contact us for more details... we would be happy to explain to you and your organisation the full scope of the services that we offer. |
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Geographical Information Systems |
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The Database View: A GIS is a unique kind of database of the world—a geographic database (geodatabase). It is an "Information System for Geography." Fundamentally, a GIS is based on a structured database that describes the world in geographic terms. Learn more. The Map View: A GIS is a set of intelligent maps and other views that show features and feature relationships on the earth's surface. Maps of the underlying geographic information can be constructed and used as "windows into the database" to support queries, analysis, and editing of the information. This is called geovisualization. Learn more.
The Model View: A GIS is a set of information transformation tools that derive new geographic datasets from existing datasets. These geoprocessing functions take information from existing datasets, apply analytic functions, and write results into new derived datasets. Learn more. Below are two samples from previous GIS work undertaken by us in the recent past .
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