Star Plots

http://www.math.yorku.ca/SCS/Gallery/images/starcrim2.gif

A star plot is a multi-data representation of information. It uses various points to display the information within the plot. It uses spokes (lines) to connect the points within it. The data length of a spoke is proportional to the magnitude of the variable for the data point relative to the maximum magnitude of the variable across all data points. The above map is an example of a star plot, showing the crime rates within certain cities. It does not show the data used to mark each point but it shows how each point is different than other cities and how variables affect the image. The points given in each give the appearance of the star giving the name a star plot.

Correlation Matrix

http://www.scielo.br/img/revistas/jbchs/v18n3/06t2.gif

A correlation matrix uses two or more variables to describe something. One variable is a correlation of the other. The above matrix describes an unknown area. It shows how certain items, such as different types of pollution and temperature affect each other. It is used to describe mathematical information about a place. A correlation matrix can also be used to describe distances. One city location compared to another affects the distance between each other. A lot of atlases have correlation matrices of mileages showing different cities.

Histogram

http://www.graphicsserver.com/SampleApps/DotNet/General/Chart%20Types/Custom%20Charts/Histogram/Histogram.png

A Histogram is similar to a bar graph. The difference is the Histogram is calculated by the area of the bar not necessarily the height.

Parallel Coordinate Graph

http://servus.itn.liu.se/projects/geowizard/images/sheetpcb.png

A Parallel Coordinate Graph is used to show information that has multiple problems. Each set of information is set up in equal spaced axis. A data dimension connects each point along each axis to bring everything together.

Triangular Plot

http://ex-parrot.com/~chris/tmp/talk-2004-06-15/end-of-2003.png

A Triangular Plot is used to chart or document proportions or percentages that are caused by three variables. There are three sides of the triangle, using each side for one of the variables. The points on the chart are then placed accordingly based on each variable.

Windrose

http://www.climate.washington.edu/windrose/Olympia-WindRose.jpg

A Windrose is a tool to show meteorologists how wind speeds and directions are generally distributed over a certain area. The length of the spokes show the frequency of the wind speeds. The center of the Windrose is the starting point of the chart. It starts at zero and gets larger towards the outer portion of the circle.

Climograph

http://wps.prenhall.com/wps/media/objects/214/219557/climograph2_national_drought%20_mitigation_center.gif

A climograph is used to show the monthly precipitation and temperature conditions for a desired place. The climograph uses both a bar graph to show one variable and a line graph shows the other. For example, the above graph has a red bar graph and blue line graph used to show the other variable. Along the bottom shows each month that the data was retrieved.

Population Profile

http://www.fao.org/docrep/005/y8331e/y8331e02.jpg

A Population Profile is a chart generated to show population related to age and certain characteristics. These characteristics can consist of blood types, chemical genes, or like the chart above which uses sex type.

Scatter Plot

http://www.netmba.com/images/statistics/plot/scatter/scatterplot.gif

Scatter Plots are created to show the relationship between two variables. A point is plotted at value that is determined using the second variable. It is based on ninety degree angles and using an x and y axis.

Index Value Plot

http://www.galatime.com/images/2006/nifty_atr14_percentage.png

The Index Value Plot is typically a explanation of progress over time. It does not give exact values but it shows increases and decreases over that period of time. The information is the current flow of productivity. For example, prices of rising and lowering in the stock market over an amount of time could be listed on an Index Value Plot.

Lorenz Curve

http://chesters.org/marvin/GINI/Gini.jpg

A Lorenz Curve is a representation of probability or percentage data. The creator, Max Lorenz, used the Lorenz Curve to explain income distribution. In the above map, there is a different blue curve for each change in coefficient.

Bilateral Graph

http://www.rowperfect.com.au/graph3.gif

A Bilateral Graph generally has a baseline of zero. The information within the graph shows a variables increase and decrease in response to a second variable. The above Bilateral Graph shows how hard or how much force was used by a person using a row in the water. The second variable is the time through the stroke or each row.

Nominal Area Choropleth Map

https://courseware.e-education.psu.edu/courses/geog482/graphics/citationexample.jpg

A Nominal Area Choropleth Map displays non comparative data or statistics. Usually the information represents descriptions or names within a certain area. For example, there are no numbers assigned to the map above but it gives a description of the minority population within the United States.

Unstandardized Choropleth Map

http://www.epa.gov/oppt/rsei/images/thematic.jpg

The Unstandardized Choropleth has a legend but if noticed there is no actual value attached to each color. The purpose of an Unstandardized Choropleth is to give a basic idea of the information without giving actual values for each location. The map above gives a low end population count and a high end population count. Everything between the two colors are estimates without having actual data numbers.

Standardized Choropleth Map

http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/USA_states_population_density_map.PNG/800px-USA_states_population_density_map.PNG

A Standardized Choropleth has only one set of data as well. The information or data within a standardized choropleth is based on percentages. It is broken down in groups and an overview. For example, the above map shows a general percentage of people or population for each state in the United States.

Univariate Choropleth Map

http://www.princeton.edu/~rvdb/JAVA/election2004/purple_america_2004_small.gif

An Univariate Choropleth also uses color to show the data that is needed to be represented. The difference is an Univariate Choropleth only shows one set of data. The above Univariate Choropleth shows the 2004 election votes.

Bivariate Choropleth Map

http://www.geog.le.ac.uk/russianheartland/DemographicMaps/images/PopulationMaps/RaionMaps/7RaionPopDenPerCh8902.jpg

A Bivariate Choropleth Map shows two different variables using color schemes. It generally us shows spatial difference of two variables along with the geographic differences between the two variables. For instance, the above map compares the population density and the change of density over central Russia. A Bivariate Choropleth Map is usually used to compare data of two variables.

Unclassed Choropleth Map

http://www.nass.usda.gov/research/atlas02/Crops/Vegetables%20and%20Melons%20Harvested/Vegetables,%20Acres%20Harvested%20for%20Sale-choropleth%20map.gif

An Unclassed Choropleth Map uses color shading to describe the data. The difference is that the data within a Unclassed Choropleth Map has no classification. It is difficult to depict the shading which makes this type of map less useful and less accepted.

Classed Choropleth Map

http://www.ilstu.edu/~jrcarter/Geo204/Choro/map-AmFact-4round-green-80pct.jpg

Choropleth maps are used to compare information throughout the map. For instance, this map compares the number of males per every hundred females within that state. It uses shades of colors for different numbers of males. The darker the green the more males compared to every hundred females. Each area or class is assigned a different symbol or color in a classed choropleth map. Each classed choropleth map has some classed information or statistical data represented in it, such as number of observations, or different quantities and qualities areal variables.

Range Graded Proportional Circle Map

http://www.nature.com/nature/journal/v451/n7181/images/nature06536-f2.2.jpg

The Range Graded Proportional Circle Map also uses circles to describe information. Circles are used because it is easier for the reader to understand. Generally, the Range Graded Proportional Circle Map has information that does not change often. It should also be noted, that one of the big factors for this type of map is that the information is broken into groups and each circle size describes a different group.

Continuously Variable Proportional Circle Map

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

A continuously variable proportional circle map gives data that can change. It shows an amount based on the size of the circle. For instance, the map above shows types of industries in different areas. There are several sets of data within each circle. The larger the circle the more to that industry. But it should be noted, the data is always changing.

DOQQ

http://www.geomart.com/images/digital/doqq/doqq.jpg

A DOQQ, is actually called a Digital Ortho Quarter Quad. A DOQQ is a computer generated image. It uses an aerial photo and then uses computer technology to take out the distortion caused by camera angles and other flaws. The qualities of a DOQQ have photo aspects along with geometric aspects found in a map.

DEM

http://home.san.rr.com/bwagner/honolulu.dem.jpg

A DEM is known as a Digital Elevation Model. It shows the elevation of an area using a digital representation. The above image is the elevation difference along Honolulu, Hawaii.

DLG

http://edc.usgs.gov/images/dlg.gif

A DLG is known as a Digital Line Graph. The purpose of a DLG is to show different information such as boundaries, roadways, and utility lines. DLG's are digital representations of cartographic information. The DLG above shows the boundary, hydrography, and transportation layers of Dancyville, Tennessee.

DRG

http://www.forestpal.com/images/drg.gif

A DRG, also called a Digital Raster Graphic, is a scanned image. The image is a general topographic map of the U.S. Geological Survey. Geo-referencing is added to the map to help give true position on the ground.

Isopleth

http://www.idahogeology.org/Services/Hydrogeology/PortneufGroundWaterGuardian/my_drinking_water/hotwater_topics/water_capdraft/watercap_fig3.jpg

This is an isopleth image of a detailed water balance of the upper part of the lower Portneuf River valley. The purpose of an isopleth image is to show features of meteorological charts, connecting points which have an equal value of some variable at a given time and spatial area. This shows the possibilities of future water output over time. It compares what is seen at a particular time to a possibility in the future for that feature. The isopleth uses contour lines to demonstrate the possible water levels over different times.

Isopach

http://seeps.geol.ucsb.edu/images/pictures/geology_images/isopach.jpg

Isopachs are used to show the thickness of something. Generally, they show rock thickness or thickness of sediment. Isopach maps are usefully in showing amounts of ashes fallen from a particular volcano. The information can be shown with color scales or contour lines.

Isohyets

http://www.hko.gov.hk/publica/tc/tc2004/images/figure/figure332.gif

Isohyets are used in meteorology to show the rain fall. It gives data on average rain fall for a particular area during a certain time period. This information is demonstrated generally by two ways. One type of Isohyet might be displayed by color shades. The use of contour lines can also be applied.

Isotachs

http://www.zamg.ac.at/eumetrain/EUMeTrain2006/Finland_Lithuania/Content/Images/MPara/kpara01.gif

Isotachs are again used by meteorologist to show wind speeds. The use of contour lines again show data. In the map above the yellow line is used to demonstrate wind speeds for that area. A lot of Isotach maps have both Isobars and Isotach information within them.

Isobars

http://www.halesowenweather.co.uk/isobars.gif

Isobars are maps using contour lines to show atmospheric pressure. It generally is measured in millibars. This type of map is used in meteorology.

LIDAR Map

http://www.nasa.gov/centers/goddard/images/content/67414main_lidar_changes.jpg

This is a sample of Mt. St. Helen, taken by NASA. The LIDAR (Light Detecting and Ranging) measures properties of scattered light to find range and/or other information of a distant target by using an optical remote sensor. The information retrieved can track changes over time in a particular area.

Doppler Radar

http://www.ci.ocoee.fl.us/General/Images/DopplerRadar.jpg

This image is a Doppler radar screen from the well known weather channel. Doppler radar images uses an antenna to send a microwave out and the wave returns to the antenna gathering information. In weather, the antenna sends out pulses and based on the precipitation determines the strength of the returned wave. Doppler affect is used in many different items such as radar guns, used by law enforcement. The same affect is used to create images of areas to show rain and storms. Doppler radar does not just mean weather radar. Doppler is the effect of the antenna.

Black and White Aerial Photo

http://online.redwoods.edu/instruct/colloquium/0607/dbazard/BTShusteraerialview2.jpg

A Black and White Aerial Photo is simply a picture taken from above using shades of black, grey, and white. There are no colors within the picture. A lot of roadway images are taken using black and white aerial photos.

Infrared Aerial Photo

http://ecosystems.mbl.edu/pie/data/MAP/irparker.jpg

This is an infrared aerial photo of water bodies of the Plum Island Sound Estuary in northeastern Massachusetts . The purpose of an infrared aerial photo is show change over time. It uses portions of spectrum lights to watch changes within the area. It can show how diseases and toxins affect certain areas over time. If the lights are filtered properly then this type of photo can explain important information. It is used by a lot of research groups.

Cartographic Animations

http://www.usna.edu/Users/oceano/pguth/website/ISABEL.GIF

Cartographic Animation is used to show change over periods of time. A series of pictures could be used to demonstrate differences in land aspects over a certain time period. Or, like the image above, it could be computer generated to show the change. The news uses Cartographic Animation to show the change in rain bands over different time periods.