Sunday, July 27, 2008

Cartogram-Energy Consumption

Another variable is used to graph area. The size of each area represents the size of the variable that is being maped; it is distorted to match the value of the variable. I found this one to be quite interesting .. Energy consumption!! What a hot topic today with our current gas prices. The map on the left is a normal world map which the cartogram on the right represents energy consumption. The USA looks kind of puffy and swollen!!

Isolines/Bathymetric Map

Isoline maps depict geographic areas with lines of equal value. A bathymetric map depicts elevation of surfaces below water. Lines of equal value represent the elevation. Downloaded from:

Sunday, July 20, 2008

Star Plots

A star plot compares multiple variables for each observation. The center point or radii is the actual observation point. This matrix compares different vehicles based on price, milease, head room, trunk space, etc. Data and download available at:

Correlation matrix

A correlation matrix is done to see where there is a correlation among the data. In this matrix, investor funds are correlated to regions, styles of investment, secort, bonds, and the foreign exhange.
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Similarity matrix

A similarity matrix is used to show how similar (or not) the variables are to one another. This matrix shows the similarity of molecules.
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Stem and Leaf Plot

A stem and leaf plot uses the higher number as the stem and the secondary numbers as the leaf. These plots show the frequency of values. This plot show infant mortality rates in Western Africa.

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Box Plot

A box plot which is also known as box and Whisker Plot, is a summary of a set of data, in this case, scores from site samples of a creek.


A histogram tablulates frequency. This histogram portrays the forecasted and observed UV idex.

Parallelcoordinate graph

A parallel coordinate graph represents each variable being graphed on a vertical axis; it explores the relationship among the variables.

Triangular Plot

Trianglular plots are often used to portray soils however this one shows the percentage of votes from each region for the parties in the United Kingdom. The lines of each triangle represent the percentage of each party vote for that area.
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A windrose shows the wind direction and wind speed in a particular location; in this map - Seattle, Washington.
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A climograph shows the relationship between temperature and precipitaton.
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Population Profile

Population profiles or population pyramids are commonly used to show the trends in population statistics over time. The first pyramid shows that Kenya has rapid growth .. they have a very young population with high fertility rates and high death rates among their older population.
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A scatterplot portrays 2 variables; the dot is the observation and the line represents the trend.
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Index Value Plot

An index value plot is another type of visualization map. An index value (not an absolute value) is plotted on a line graph.
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Lorenze Curve

A Lorenze Curve measures inequality and is commonly used to show the disparity in earnings to total income.

Bilateral Graph

A bi-lateral graph is a visualization map. Two related variables are identified as well as their overlaps. This map represents bilateral humanitarian assistance from various countries.

Unstandardized Choropleth Map

Unstandardized choropleth maps are unordered maps; there is no specific ranking assigned to the class - one category is not higher or lower than the other.
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Univariate & Standardized choropleth maps

A univariate map shows only one specific set of data; in this case population. This map is also standardized in it represents population by sq. mile.
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Bivariate choropleth maps

Bivariate maps display the realtionship of two variables. In this map, you are see the increase from the divorce rate in 1980 to the divorce rate in 1990. This particular map is also a form of cartographic animation in that the web page flashes between the rate in the individual states to a map that also shows the divorce rate by individual counties within each state.
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Bivariate Choropleth Map

An unclassified chropleth map; there are no classes defined; there are as many classes as there are area's. Downloaded from:

Classed Choropleth map

Census bureau map which displays classes of varying percentages which represent the percentage of the population which is hispanic or latino in each county (the areal unit) within Florida.

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Range Grade Proportional Circle Map

Range graded proportional circle map displays the population of the countries in Europe. Size of circle corresponds to various ranges of population values.
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Digital Elevation Model of Sturgis, SD. Relief is displayed 3 dimensionally.
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DLG .. digital line graph of Dancy TN; vector data representing hydrology, transportation and boundary information.


LIDAR is also a type of remote sensing which uses a laser instead of a radar or microwave sensor. This is an NASA image taken from space; LIDAR is being used by NASA in space operations and complete detailed and downloaded image can be seen at:

Doppler Radar

Doppler Radar created by FSU. Doppler Radar is a form of remote sensing, using radar .. this image depicts a hurricane along the Florida Coastline.
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Black and White Aerial Photography

Typical type imagery often produced for government agencies for use in their GIS. This particular image was found on the Massachusett's GIS Web Page. Downloaded from:

Infrared Aerial Photo

False color infrared aerial photo of Teton National Wildlife Refuge. False color imagery is often used as it helps to delineate surface features. In this image, they have identified the sand dunes, hydrology features and the Alaska Highway.

Cartographic Animations

This is a cartographic animations which displays traffic accidents around the world. Image was obtained through a yahoo search and downloaded from Mr. Black had a prevous cartographic animation that traveled the web and was seen by many. It portrayed air traffic across the US and it was just as interesting. It can be seen at

Sunday, July 6, 2008

Cadastral Map

This is an example of a cadastral map or property ownership map. This particular map was downloaded from Santa Rosa County's Property Appraiser web site. Property ownership data accompanies the map when you are actually using the web server.


The is an original Government Land Office (GLO) PLSS Map of Township 6N Range 25W downloaded from This particular area is located near the town of Jay, Florida and shows irregular section number assignment due to Spanish Land Grants which are also depicted on the map. You can also see where a river traverses through this township.