Known to be true in area but not meeting conformality…this picture depicts an example of an Albers Equal Area Projection. Distance will be distorted except around standard parallels.
Sunday, November 20, 2011
State Plane Coordinate System
Above is a full view of the State Plane Coordinate System that is used in the United States as it was in the year 2004. It is known that projection is chosen that best matches the shape of the state and are used by measure in units of feet. It used mainly for geographic data by state and local governments.
Universal Transverse Mercator System
The above picture represents an example of the Universal Transverse Mercator (UTM) System. A UTM is a rectangular coordinate system which has two different versions: A) Military B) Civilian. Each zone is six degrees and has a central meridian. The map above is a UTM Map of the NATO UTM System; dividing the earth into 60 longitude zones.
Triangular Plot
A Triangular Plot’s purpose is to depict information of three different variables in one’s whose shape is in the form of a triangle. Here we have a Triangular plot who examines the relative modal abundances of the phenocrysts OR, PL and QZ.
Friday, November 18, 2011
Political Map
A Political Map is a map that provides information on borders or boundaries between a state, nation, cities and counties. In a Political Map, no physical features of an area are present or given. The image is a representation of a Political Map of the United States. Note that the boundaries of the States have been outlined to represent their respected shapes. Capital cities have also been labeled.
Accumulative Line Graph and Lorenz Curve
An accumulative line graph or Lorenz Curve serves as a form of graphical representation and used in Economics. It has the ability to show the point of inequality that exists in the distributions between two variables. Up top is a basic setup of a Lorenz Curve.
Correlation Matrix
Dictionary.com defines correlation as a “mutual relation of two or more things.” A Correlation Matrix shows the “correlation” for all data examined. In the model of a correlation matrix posted above, the X and Y axis have been labeled accordingly.
LIDAR
LIDAR, also known as Light Detection and Ranging, takes the use of sensing technology by “illuminating” a target with light. This picture is utmost interesting as it is a LIDAR image of the World Trade Center area in New York, just four days after the 9/11 attacks.
Star Plot
One way to examine multivariate data is through the use of a Star Plot. According to NIST/SEMATECH e-Handbook of Statistical Methods, Star plots “examine relative values for a single data point.” The image above examines the nutritional elements of a Cheese Sandwich.
Wednesday, November 16, 2011
Parallel Coordinate Graphs
Parallel Coordinate Graphs, as “busy” as their graphs may seem, are useful in the analyzing and understandings of multivariate data. Furthermore, each line in a parallel coordinate graph will connect a series of values. This parallel coordinate graph presents its viewers with alcohol data, with the red representing heavy drinkers.
Dot Distribution Maps
As the name of the map would imply, Dot Distribution maps count on the use of dots to represent a “value” of an area. Also known as dot density maps, these maps “rely on visual scatter to show spatial pattern.” Serving as a fantastic example of dot distribution at its best, this picture examines the population distribution of Australia. In this map, one dot is equal to 1000 people; we can see where population is at its highest and lowest quite easily.
Isobars
Isobar Maps are responsible for relating information on the mapping of air pressure of a specific location. According to the California State University of Long Beach, "Isobars are the isolines used to connect all places having the same corrected air pressure readings." The above image is an isobar map of New Zealand and eastern Australia.
Isoline Maps
Isoline maps, known for connecting points at equal value, are maps that provide certain “characteristics” of a given area. Isoline maps are a two dimensional representation of a three dimensional model. Moreover, there are various types of isoline maps; this map in particular concentrates on annual precipitation in Mexico.
Tuesday, November 15, 2011
Propaganda Maps
Propaganda maps, in which I find to be some of the most interesting out there, serve a great deal in the understandings of what is occurring or has occurred during a specific time period in the world. Propaganda is defined by Dictionary.com as “information, ideas, or rumors deliberately spread widely to help or harm a person, group, movement, institution and nation.” These maps at times can have much influence on people. This is why it is key to have a keen view when examining these types of maps. This propaganda map in particular is a map of the world of what President Ronald Reagan would have thought to be like. What I believe is very important to point out is the us VS. them feeling. Note that sizes have been exaggerated and the use of the word OUR is very much apparent throughout.
Digital Raster Graphic (DRG)
A type of digital image, a DRG, also known as a Digital Raster Graphic is a scanned image from the United States Geological Survey topographic map. Here we have a DRG depicting the Cambridge area of the City of Boston.
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