What is GIS?
GIS is a collection of computer hardware, software, and geographic data
for capturing, managing, analyzing, and displaying all forms of geographically
referenced information.
How does GIS work?
GIS can integrate and relate any data with a spatial component, regardless
of the source of the data. For example, you can combine the location
of mobile workers, located in real-time by GPS devices, in relation to
customers' homes, located by address and derived from your customer database.
GIS maps this data, giving dispatchers a visual tool to plan the best
routes for mobile staff or send the closest worker to a customer. This
saves tremendous time and money.
What is unique about GIS?
Rather than you working hard to understand your data, GIS puts your
data to work for you. GIS can provide you with powerful information—not
just how things are, but how they will be in the future based on changes
you apply.
What are the applications of GIS?
Map Where Things Are:
Mapping where things are lets you find places that have the features
you're looking for, and to see where to take action.
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Find a feature—People use maps to
see where or what an individual feature is.
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Finding patterns—Looking at the distribution
of features on the map instead of just an individual feature,
you can see patterns emerge.
Map Quantities:
People map quantities, like where the most and least are, to find
places that meet their criteria and take action, or to see the
relationships between places. This gives an additional level of
information beyond simply mapping the locations of features.
Map Densities
While you can see concentrations by simply mapping the locations
of features, in areas with many features it may be difficult to
see which areas have a higher concentration than others. A density
map lets you measure the number of features using a uniform areal
unit, such as acres or square miles, so you can clearly see the
distribution.
Map Change:
Map the change in an area to anticipate future conditions, decide
on a course of action, or to evaluate the results of an action
or policy.
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By mapping where and how things move over a period of time,
you can gain insight into how they behave.
- Map change to anticipate future needs
- Map conditions before and after an action or event to see the
impact.
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