There are many different ways the news uses maps to show data to the public. First off the easiest to see is the weather maps that are used by the news to show the public the projected weather patterns. Many different maps are used for this, some are satelite images and others just projected maps with the data sets on top of them.
The projected weather forecasts are a simple way to give basic weather data to the public.
Another way they use maps are to show various political information so people can get a good hanlde on who supports each canidate in each area. They are mostly maps of the division of democrats and republicans views on issues but the can give a good idea of what is going on in the country.
A simple representation of the political divide map.
One last way the news projects thier information on maps is to show people the location of current events. These are just reference maps that give people vital information to where a crime has happened or a natural disaster. They are mostly jusy locational maps rather than projecting lots of information to the audience.
This map gives the location and area of affect of an earthquake in Washington state.
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