Tuesday, October 14, 2008

Map# 51: Remote Sensing Mapping



This is a map used to represent the top level domain (TLD) name system of the internet. The TLDs are visualized and linked as KML. The map and additional info on this project can be found at http://www.zook.info/tld_map.html

Sunday, October 12, 2008

Map# 50: Star Plots


Star Plots show multiple varying data. When combined with other star plots, the viewer can compare a variety of observations. This analysis shows star plots for 16 different 1979 automobile models comparing 9 different variables of Price, Mileage (MPG), 1978 Repair Record (1 = Worst, 5 = Best), 1977 Repair Record (1 = Worst, 5 = Best), Headroom, Rear Seat Room, Trunk Space, Weight, and Length.

Map# 49: Correlation Matrix


A Correlation Matrix shows the strength and direction of relationship between two variables, or simply put, how closely correlated two items under consideration are. In the financial world, this could be used to depict how closely related two different stocks are or, as this correlation matrix does, showing correlations between the S & P 500, 10 different sectors, gold, oil, and the 10 year Treasury note. The numbers in green show higher correlation than numbers in red.

Map# 48: Similarity Matrix


A Similarity Matrix is utilized to highlight the likeness or similarity of two separate data points. This similarity matrix was used in a study to determine the similarity bewteen two videos.

Map# 47: Stem and Leaf Plot


A Stem and Leaf Plot organizes data in order to show its shape and distribution. In this instance, the number 12 is depicted as 1 under the stem, and 2 under the leaf. Likewise, 13 is depicted as 1 under the stem and 3 under the leaf. This stem and leaf plot shows a distribution of 2 values between 10 and 19, 2 values between 20 and 29, 4 values between 30 and 39, and 3 values between 40 and 49. The largest distribution is between 30 and 39. This plot can be found at the following web site: http://www.glencoe.com/sec/math/studytools/cgi-bin/msgQuiz.php4?isbn=0-02-833050-1&chapter=2&lesson=6

Map# 46: Box Plot


A Box Plot shows ranges of data within statistical summaries. This box plot was used in an experiment on the speed of light.

Map# 45: Histogram


A Histogram depicts information a a bar type format. Unlike a normal bar chart, the bars of a histogram different in width rather than height. In this histogram, notice the changing width of the bars as the travel time (bottom axis) increases.

Map# 44: Parallel Coordinate Graph


A Parallel Coordinate Graph is used to graph large multi variate sets of data. This complicated parallel coordinate graph captures multiple baseball statistics.

Map# 43: Triangular Plot


A Triangular Plot is a way to graphically depict information related to three variables. This triangular plot shows the relationship between sand, clay, and silt in a specific soil sample composition.

Map# 42: Windrose


A Windrose does esentially for wind speed and direction what the Climograph does for temperature and precipitation. A Windrose shows the distribution of wind speed and direction at a given location. This Windrose shows distribution of wind speed and direction at Fresno, CA airport.

Map# 41: Climograph


A Climograph graphically highlights the temperature and precipitation of a given location. This climograph shows temperature and precipitation for Memphis, TN

Map# 40: Population Profile


A Population Profile highlights various elements pertinent to a given population. This population profile highlights the age ranges in the country of Gambia

Map# 39: Scatterplot



A Scatterplot shows the relationaship between two variables by depicting two data points on a graph. This scatterplot depicts the relationship between a husband's and a wife's age.

Map# 38: Index Value Plot


Index Value Plot of a specific wine's price over time indexed to $100 in 1995.

Map# 37: Lorenz Curve


The Lorenz Curve was originally devised by Max Lorenz as a way to depict income distribution.

Map# 36: Nominal Area Choropleth Map


A Nominal Area Choropleth map showing religious adherents throughout the United States.

Map# 35:Standardized Choropleth Map


A Standardized Choropleth map depicting percent of Canadian population who are age 14 and under.

Map# 34: Univariate Choropleth Map


A Univariate Choropleth map focuses on one theme. Here the focus is on Farm Income throughout the United States.

Map# 33: Bivariate Choropleth Map


A Bivariate Choropleth Map. This map uses horizontal and vertical lines to differentiate between business and residential land use.

Map# 32: Unclassed Choropleth Map


This is an Unclassed Choropleth map of Montana. Notice the different attempts to create various differences in shading. These maps are not utilized as much as the classed Choropleth map.

Map# 31: Classed Choropleth Map


A Classed Choropleth map depicting percent of Hispanic or Latino population in the state of Florida.

Map# 30: Range Graded Proportional Circle Map



A Range Graded Proportional Circle Map of population in Canada. Notice the smaller circles within the larger circles providing more detail than the previous circle Map of the US population.

Map# 29: Continuously Variable Proportional Circle Map


A Continuously Variable Proportional Circle Map of United States population estimates. Notice how readily the viewer can get a sense of population sizes by quickly glancing at the legend and comparing circle sizes.

Thursday, October 9, 2008

Map# 28: Digital Ortho Quarter Quads (DOQQ) Map.


Digital Orthophotos are images which depict a uniform scale. Because of this, it is possible to measure directly on it like other maps. These maps can be used as base maps for additional overlays for a variety of information. The example above is a 3-D view of Salem, NY. This map was produced with complicated mapping techniques detailed at Terrainmap.com edited by John Childs.

Wednesday, October 8, 2008

Map# 27: Digital Elevation Model (DEM)


DEMs are the most used basis for digitally produced relief maps. These maps are a digital representation of ground surface topography or various terrain. They are formed from either land surveying or, more often, remote sensing techniques. They are also called digital terrain models. Notice the level of detail that is obtained on the DEM map above.

Map# 26: Digital Line Graph (DLG)


Above is a DLG 1: 2,000,000 scale map of Missouri depicting Boundaries, hydrography, and roads. DLG maps are derived from USGS DLG databases. They are high resolution maps containing outlines of a variety of features such as: country and coast lines, state outlines, county outlines, roads, railroads, streams, lakes and islands, major city outlines, and military reservations to name a few.

Saturday, September 27, 2008

Map# 25: DRG


A DRG or Digital Raster Graphic is a scanned image of a topographical map reproduced as a digital image.

Map# 24: Isopleth Map


Isopleth maps generalize and simplifiy data with a continuous distribution. It shows the data as a third dimension on a map.  These maps are often utilized for mapping surface elevations, amounts of precipitation, atmospheric pressure, and numerous other measurements that can be viewed statistically as a third dimension.

Map# 23: Isohyet Map


Isohyet maps show lines joining points of equal precipitation. The yellow areas on this map received the least amount of rainfall, and the dark blue areas indicate the most precipitation.

Map# 22: Isotach Map


Isotachs maps depict lines of equal wind speed. This map shows wind speeds across Canada. The numbers on the map indicate wind speed in Miles Per Hour (MPH)

Map# 21: Isobar Map


Isobar maps show lines of equal atmospheric pressure drawn over a meteorological map. This map highlights areas of low and high pressure with the letters L and H.

Map# 20: LIDAR


Light Detection and Ranging (LIDAR) is a remote sensing system used to collect topographic data. This system is being used  to document topographic changes along shorelines. After establishing a baseline, scientists can then follow up in the future to detect shoreline changes. This map captures elevation data from Hilton Head, South Carolina to enable the study of shorelines changes there.

Map# 19: Doppler Radar Map


Doppler radar is often used to project weather patterns. This Doppler map of New England shows the amount of precipitation throughout the area at a given point of time. The scale along the right side connects the colors with the level of precipitation.

Map# 18: Black and White aerial photo map


Black and white aerial photo maps are actual photos of a particular area. This one shows houses, buildings, roads, subdivisions, trees and other details in an area of Kansas.

Map# 17: Infrared Aerial Photo Map


This is an infrared aerial photo map of the United States. The photo was taken in the infrared band of light and shown on the National Weather Service web page.  Lower level clouds are generally warmer. They are shown as grey areas. Higher clouds are usually colder and are shown as colored areas. Warmer objects are always darker.

Map# 16: Cartographic Animation


Cartographic animation is the incorporation of graphic art that occurs in time.  Animation provides is a dynamic visual statement that evolves through various interval changes in the display. Using this type of mapping would allow viewers to observe changes in data over a period of time in a striking way. You could depict how an important battle proceeded, how railroads spread across the country, and how trade developed along them. These are just two examples. The map above shows how rainfall has changed in this portion of Africa over a period of years. (wait for animation to load).

Map# 15: Statistical Map


A statistical map reflecting the number of personal care homes in the State of Pennsylvania (by region). It shows both the total licensed capacity (numbers in black), and the actual numbers of personal care homes (numbers in red). 

Map# 14: Cartogram


A cartogram is a map that resizes territories according to the variable which is being studied. The above map is a cartogram of the 2004 Presidential election results. Notice how the size of the states has been redrawn to reflect the actual size of their populations and not just their geographic size.

Map# 13: Flow Map


Flow maps are useful for showing the movement of people, goods, services, things, etc. from one location to another.  This map shows the flow of Kilauea volcanic lava flow as it expanded between 17 July 2008 and August 21st 2008 (noted in dark red)

Map# 12: Isoline Map


Isoline maps show continuing lines joining points of like value.  A common example is contour lines on a topographic map. Other examples include isobars showing barometric pressure, isotachs showing wind speed, and isotherms showing temperature. The colorful map above shows areas of common dewpoint temperatures throughout the United States.

Map# 11: Proportional Circle Map


Proportional circle maps utilize simple discs of varying proportions to depict different values of a certain subject or area of study. The map above studies median rent values in different areas. Notice how the size of the circles varies with higher or lower rent values.

Map# 10: Choropleth Map


Choropleth maps show quantitative data through the use of various colors and intensity of those colors. One can use this type of map to show density, percent, average value of a certain subject. The map above shows the net cash farm income throughout the United States. The darker the red, the higher the net cash income. Notice the high farm income in Southern California.

Map# 9: Dot Distribution Maps


Dot distribution maps highlight where particular data characteristics occur. These maps utilize dots or various other markers to represent the number of occurrences of a certain data characteristic in a location or area. Each dot or symbol used on the map may represent a single entity (one dot = one person) or a group (one dot = 1000 people). The map above shows acres of farmland with 1 dot equalling 100,000 acres.

Map# 8: Propaganda Maps


Propaganda maps were in wide use in the 1900s and used to convey political messages and views of many contentious issues. The propaganda map above depicts a red pump/octopus as a metaphor for Western Europeans who took it upon themselves to communicate in any way with Eastern Europeans (the enemy). The map is rife with imagery of traitors and spies, and products being secretly given, sold, or provided to the enemy.

Map# 7: Hypsometric Map


Hypsometric maps depict elevation through the use of contour, color, and shading.The above hypsometric map of a portion of France readily depicts the differences in elevation of this area

Map# 6: PLSS (Public Land Survey System) Map


The Public Land Survey System (PLSS) is a land partioning system used in the United States. Land in the public domain (and some privately held land) throughout the U.S. is subdivided by guidelines of this rectangular system of surveys. Land is divided into 6-mile-square townships, and townships are further subdivided into 36 one-mile- square sections. Subdivision continues into quarter sections, quarter-quarter sections, or irregular government lots. Permanent markers or a monument denote the section corner. The PLSS maps sections above depict the subdivisions.

Map# 5: Cadastral Maps


Cadastral maps depict boundaries and ownership of land parcels. They can include survey district names, unique identifying numbers for parcels, certificate of title numbers, positions of existing structures, section and/or lot numbers and their respective areas, adjoining and adjacent street names. They provide the location, and dimensions of various parcels of land. Their primary use is to document land ownership, value property,and determine taxes. They are frequently used in legal cases involving disputes over land ownership. The simple cadastral map above shows locations and sizes of various plots of land.

Map# 4: Thematic Map


Thematic maps highlight specific subjects. There are different types of thematic maps which can include choropleth or shaded maps, dot maps, proportional symbol maps, and isarithmic maps. These maps can also focus on a specific subject. The theme of the above map is Tall Buildings and it highlights the tallest buildings in the world.

Map# 3: Topographic Map


Topographic maps utilize contour lines to depict the shape and various elevations of land. They depict both natural and man made elements. Some of the features you can expect to find on a topographic map are: mountains, valleys, plains, lakes, rivers, and vegetation, roads, boundaries, transmission lines, and major buildings. The most common scale for these maps is 1:24,000. This is a map of the Big Meadows area of the Skyline Drive in Virginia.  Notice how close many of the countour lines are, helping you to see the steepness of the terrain.

Monday, September 15, 2008


Map#2: Planemetric Map


Planemetric maps effectively show the footprints of buildings, sidewalks, parking lots, key thoroughfares. This type of map would be useful for depicting key buildings and locations on a University Campus, or a downtown area. This is a map of a portion of the Pensacola Junior College Campus showing key buildings, parking areas, and roads.