Ashleigh's Map Catalog

Wednesday, April 21, 2010

Statistical Map



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Statistical maps display distance data according to mathematical definitions of space and distance. This statistical map illustrates the spread of Internet throughout the world according to a census taken in 1997. The map explains that most of the world has Internet connectivity except for a few countries, which are in yellow.

Monday, April 19, 2010

Similarity Matrix




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Similarity matrices display scores that relate to the relationship between two data points. The data points are marked along the X and Y axis. This similarity matrix represents the strong relationship with a red square and a low relationship with a blue square.

Sunday, April 18, 2010

Bivariate Choropleth Map




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Bivariate choropleth maps display two variables on a single map by using different symbols for each variable. This specific bivariate map represents the 1997 population and also the median house values. The darker colors represent both the higher population and higher median house value.

Nominal Choropleth Map



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Nominal choropleth maps are a way to display qualitative data by classifying it into groups. Quanitative values are not used. This specific map illustrates minority groups in the United States by use of color. According to this map, the hispanic race is the most dominant minority group in America.

Continuously Graded Proportional Circle Map



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Continuously graded proportional circle maps are a type of point pattern map that uses circle to represent numeric data. Unlike range graded circle maps, continuously graded circle maps, the circles come in all sizes. The larger the circle, the larger the numerical value, and the small the circle, the smaller the numerical value. In this specific circle map, the Hispanic population is represented in the United States. According to the size of the circles, it appears that California has the largest amount of people of the Hispanic race in that state.

Dot Density Map



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Dot density maps are a type of point pattern map that use dots to represent a certain numerical value. Unlike, continuously graded and range-graded proportional maps, in dot density maps the dots do not vary in size. In this specific dot density map, the hispanic population is represented in the United States. One dot represents 100,000 people of the Hispanic race. It looks as if California, Texas, and Florida have the largest Hispanic population.

Wednesday, April 14, 2010

Cartographic Animation



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Cartographic animations are created so that the viewer can visualize movement and gradual progression of specific data being analyzed. In this cartographic animation, the viewer can see the gradual changes month to month due to the effects of net long-wave radiation. There is a legend below that depicts by color the intensity of the effects--blue being the lowest and red being the highest.