Friday, April 23, 2010

Topographic map

Topographic maps show the topography of the land. They are used to illustrate the physical features of the mapped area. This is an example of a topographic map of Brazil, it shows rivers, mountains, highlands, lowlands, deserts, etc..

Thematic maps

Thematic maps are typically used to show a theme associated with a particular geographic area. This map is of Hawaii and breaks down the land to show ownership and function.
Thematic map of the Island of Hawaii

Cadastral maps

Cadastral maps are used for exhibiting boundaries and ownership. This is from Delaware, Ohio and all the sections are color coordinated to show boundaries.

PLSS maps

These maps are created from the public land survey system and divides an area into ownership. This map is for Ohio.

Hypsometric maps


Through the use of shading and tinting, hypsometric maps show elevation. This example is of the moon.

Propaganda maps


Propaganda maps are used to promote a state or any similar entity. This example is showing English and Russian "superiority".

Dot distribution maps


On this mao historically active volcanoes are represented with dots. The distribution of dots shows that volcanoes are normally found on the meeting edges of tectonic plates.

Proportional circle maps


http://instruct.uwo.ca/geog/242/fig22.gif
Areas of the shown circles are proportional to the amount of data contained inside the circle, for example population.

Isoline maps

A type of thematic map that uses line symbolys to show a continuous distribution such as elvation. In this map dew point is shown, the red area is the most saturated area.
http://images.google.com/

Flow maps

Flow maps show the movement or migration of objects or people from location to another. Flow maps (aka flow charts) are often used in the workplace to show an organized way of reaching an objective or to show a simplified way of how an output is reached.

Cartograms


Cartograms are representations of maps of focused by weight or highlights according to the sort of data you’re interested in studying.

Statistical maps


Statistical maps are based upon numerical values. The example map depicts statistical changes in burglaries in the Denver, Colorado, area. The yellow areas indicate a decrease in crime from 2001 to 2002; the orange areas show an increase; and the white areas stayed the same. If you look closely the percentage change is also on the map. Overall there has been in increase of crime.

Cartographic animations


Cartographic animations are used to show visual changes on a map, such as the movement of a hurricane.

Infrared aerial photo

http://www.kgs.ku.edu/Current/2002/aber/jpegs/fig16.jpg

Infrared aerial photos are often used to show changes in the environment, such as foliage changes.

Black and white aerial photo


http://isaacalongi.com/wp-content/uploads/2008/11/black_and_white_aerial_photograph_of_kc.jpg
THis is a black and white aerial photo of the American Interstate system.

Doppler radar

http://www.weatherusa.net/blog/images/doppler-orlando-1943.gif
Doppler Radar is used to map weather. This map shows precipitation over south Florida.

LIDAR


LIDAR, light detecting and ranging, is a remote sensing technique. It works by bouncing light off an object and then measures the time between transmissions to create a 3D model.

Isobars


Isobars are used to show pressure. They are lines connecting areas of equal pressure.

Isotachs


Isotachs are found on weather maps their purpose is to show different wind speeds.When the wind lines are closest together the wind speed is strongest. This example is from Mexica and the southwest US.

isohyet


An isohyet is a line joining points of equal precipitation on a map this type of map is called an isohyetal map.

Isopach

http://www.kgs.ku.edu/DPA/Schaben/Geology/gifs/s-geol11.gif

Isopleths

Isopleth maps are contour maps, they typically display variables such as temperature, precipitation, pressure, etc. In this example pH values across the United States are shown. The legend shows that various colors represent different pH scores.

DRG


DRGs, Digital Raster Graphics, are scanned from topographic maps. DRGs are often used as overlays for other types of GIS maps.

DLG


Digital Line Graphs, DLG for short, clearly show roads, rivers, lakes, etc. This DLG is from Athens, Georgia.

DOQQ

DOQQ, or Digital orthophoto quarter quadrangle, are often used to regulate industries. In this particular example is used for flood preparation and insurance agencies.
http://www.crwr.utexas.edu/gis/gishydro00/Class/trmproj/Donnelly/termproject.htm

Continuously variable proportional circle map


Continuously variable proportional circle maps are a type of proportional cirlcle maps which use circles to create point data. The circles will always be in proportion to the variable being measured.

http://www.lib.utexas.edu/maps/europe/west_germany_ind_1972.jpg

Range graded proportional circle map


Range graded proportional circle maps use proportional circles to show the relationship of a variable between two areas. This map uses larger circles for larger population.

http://mapmaker.rutgers.edu/355/dotProporCircle.jpg

Classed choropleth maps

This Classed choropleth maps is from census bureau map which displays classes of varying percentages that also represents the percentage of the population which is hispanic or latino in each county (the areal unit) within the state of Florida.
[classed+choropleth+map.gif]

Unclassed choropleth maps


Rather then using a legend to show changes Unclassed choropleth maps show changes via shading. Each shade of color typically then represents a value, as is the case with this map fromhttp://www.princeton.edu/~rvdb/JAVA/election2004/purple_america_2004_small.gif

Bivariate choropleth maps


Bivariate choropleth maps display two variables through the use of color or some similar indicator. This map seems to indicate that the area with the higher population density had the greater population change.http://www.geog.le.ac.uk/russianheartland/DemographicMaps/images/PopulationMaps/RaionMaps/7RaionPopDenPerCh8902.jpg

Univariate choropleth maps


Univariate choropleth maps categorize data on a singular variable. This map shows population.

http://www.ats.ucla.edu/stat/sas/code/gmap.gif

Standardized choropleth maps


Standardized choropleth maps use standarized unit(s) to compare a variable. This uses population per square kilometer.http://www.bbc.co.uk/scotland/education/bitesize/standard/img/geography/population/g156.gif

Unstandardized choropleth maps


Unstandardized choropleth maps have no identified classes.http://www.epa.gov/oppt/rsei/images/thematic.jpg This map shows states.

ominal choropleth maps do not use quantitative data. Rather then using quantitative data the maps preject things such as ethnicity, height, political party, eye color, etc.. This example shows the boundaries of the countries in Southeast Asia.

http://mabryonline.org/blogs/howard/archives/map_southeast_asia.jpg


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Bilateral graph


Bilateral graphs are a visualization type that compare more then one set of data side by side. This graph compares the amount of trainees to experts to JOCVs.

Accumulative line graph or Lorenz curve


The Lorenz curve is used to show the probability distribution of wealth. In this particular example the Lorenz curve is the red line, the blue line is the line of perfect inequality and the green line is the line of perfect equality.

Index value plot

The above Index Value Plot is one of streamflow values, it compares historical values for the day of the year since June 22, 1999.

Scatterplot

A scatterplot is a visualization type that compares two or more different variables by plotting dots with an x and y value. This scatterplot is from shows the relationship between husbands and wives and their ages.

Population profile





















A population profile is a graph that shows the population of people as a function of their ages. This population profile from http://www.ifad.org/operations/regional/pf/figure1.gif shows the projected population of Botswana and the projected amount of people and their ages who will have AIDS.

Climograph

Climographs depict the monthly temperature and precipitation of an area. The bars represent the precipitation and the lines represent the temperature. In this graph from http://www.uwsp.edu/geo/faculty/ritter/glossary/A_D/climograph.html the preciption reaches it's highest point during the coldest months (December, January, and February).
memphis.jpg (15215 bytes)

Windrose

Windrose maps are used to give a view of just how wind speed and direction are mapped at a certain location. This image is a windrose plot for the LaGuardia Airport of New York, New York. It shows that wind blowing south is the strongest. The image is from http://en.wikipedia.org/wiki/File:Wind_rose_plot.jpg

Triangular Plot

Triangular plots are graphs of three variables. The plotted points always equal some constant value, for example three points that always come out to a hundred percent. In this example, found at http://www.dplot.com/triangle_plot.htm, the three variables are soil types (silt, clay, and sand). The graph shows what percentage of each element is found in the soil. This type of information can be useful in an archaeological or architectural context.

Parallel Coordinate gragh

This is an example of a parallel coordinate graph. This example was found at http://servus.itn.liu.se/projects/geowizard/images/sheetpcb.png. It shows trends in data that can be applied to large quantities of information. Th Parallel coordinate graph is the lower half of the picture and shows the relationship between employees, tax rates, mean income, population mean, and capitol assets.

Monday, March 1, 2010

DEM (Digital Elevation Model)


This DEM map is of the Dry Tortugas National Park in the Florida Keys. It shows the elevation of the keys, with the red color being the highest. This type of map, created by using LIDAR technology, is also useful in finding underwater, or submerged, topography.
This image was captured from Google Earth

Wednesday, January 27, 2010

Histogram

Histograms are used to show variation in data. This histogram is showing how long it takes to recieve a contraceptive order. You can clearly see that most orders take about 4 weeks, however some orders come in as little as one while others take up to six.
http://escience.anu.edu.au/lecture/cg/CGIntroduction/Data/histogram.gif

Box plot

This is a box plot, box plots are used to quickly show the median and the quartiles of a set of data. In the example the median is between 60 and 80 and is approximately 75. Box plots can also be used to quickly calculate the inter-quartile range and to find any outliers (or discrepancies in the numbers).
http://edubuzz.org/blogs/nbhs3x1/files/2007/01/boxplot-2.JPG

Stem and Leaf Plot

This is a stem and leaf plot. It's purpose is to organize a set of numbers, as you can see from the example the numbers are in order from least to greatest. That is what stem and leaf plots do, order numbers from least value to greatest.
http://www.icoachmath.com/Sitemap/images/Stem-and-Leaf%20Plot1.jpg

Thursday, January 14, 2010

Similarity Matrix


Similarity Matrices are used to show the likeness between two or more things. For example in this case genes are being compared. The red signifies the most similarities and the blue the least.

http://www.fxpal.com/systems/MediaAnalysis/sim10000.gif

correlation matrix


A correlation matrix is used to find a correlation or relationship among a set of data. This particular matrix is for the protein correlation of phage T7.

http://yin.che.wisc.edu/images/ProteinMatrix.jpg