Monday, December 8, 2008

STAR PLOT

This is a star plot of crime rates in the US taken from: http://www.math.yorku.ca/SCS/Gallery/images/starcrim2.gif

The star plot is a way of displaying multivariate data. Each observation is represented as a "start" and the length of the rays are made in proportion to the size of that variable.

CORRELATION MATRIX



This is a correlation matrix taken from: http://www.kltprc.net/policynotes/Gifs/Tab_005A_4.gif

This is a type of map that shows correlation over several variables. The diagonal elements within are always equal to 1.0

SIMILARITY MATRIX



This similarity matrix shows the temporal similarity of a group of 512 photos and is taken from: http://www.fxpal.com/systems/MediaAnalysis/sim10000.gif

This type of map is a matrix of numbers that represents similarity between data points.

STEM AND LEAF PLOT


This is a stem and leaf plot of infant mortality rates in Western Africa taken from: http://mainland.cctt.org/mathsummer/JosephBond/StemAndPlots/images/table2.gif
This is a way of graphically displaying a group of numbers. The last number is on the right and is usually the leaf, the other numbers are on the left and form the "stem."

BOX PLOT

This is a box plot of Total Metric Scores from June of 1995 taken from: http://www.epa.gov/volunteer/stream/images/fig64.jpg

Box plots are convenient ways of graphing data through five number summaries. These numbers include the smallest observation, quartile 1, median, quartile 3, and highest observation.

HISTOGRAM

This is a histogram showing the number of weeks waiting time for oral contraceptive taken from: http://escience.anu.edu.au/lecture/cg/CGIntroduction/Data/histogram.gif

A histogram is a graphical display of tabulated frequencies, shown using bars. It differs from a bar chart in that it is the area that shows measurement rather than the height of the bar.

PARALLEL COORDINATE GRAPH

This is a parallel coordinate graph from: http://www.math.yorku.ca/SCS/Gallery/images/parallel-coords.gif

A paralllel coordinate graph shows continuous lines in "n-dimensional space." Each parallel coordinate graph shows infinite amounts of data.

TRIANGULAR PLOT

This is a triangular plot of the current election from: http://ex-parrot.com/~chris/images/20050407/triangle.png

A triangular plot is a plot of three variables that always sum to one constant. Because this constant sum is present, only two numbers must be known to complete the plot.

WINDROSE


This is a windrose photograph from Seattle, Washinton taken from: http://www.climate.washington.edu/windrose/Seattle-WindRose.jpg
This type of "map" shows meteorologists how wind speed and direction are typically distributed at a given location.

CLIMOGRAPH

This is a climograph of Memphis, TN from: http://www.uwsp.edu/geo/faculty/ritter/images/atmosphere/climate/climographs/memphis.jpg

A climograph shows monthly precipitation and temperature for a given area.

POPULATION PROFILE

This is a population profile for Mobile County according to 1998 census data taken from: http://camellia.shc.edu/literacy/tablesversion/assignments/Image2.jpg

A population profile is a chart showing the number of people as a function of their ages.

SCATTER PLOT


This is a scatter plot showing correlation between husbands and wifes age taken from: http://cnx.org/content/m10950/latest/age_scatterplot.gif
A scatter plot uses the cartisian coordinate plane to graph two variables within a set of data. It is used mostly for comparison.

INDEX VALUE PLOT

This is an index value plot of streamflow in the United States taken from: http://water.usgs.gov/waterwatch/regplots/real/real_us_2.gif

Values for an index value plot are plotted on a line graph.

LORENZ CURVE

This is a lorenz curve from: http://content.answers.com/main/content/wp/en/b/bd/Lorenz-curve1.png

"The Lorenz curve is a graphical representation of the cumulative distribution function of a probability distribution" (http://en.wikipedia.org/wiki/Lorenz_curve)

BILATERAL GRAPH

This is a bilateral graph taken from: http://www.pastpeak.com/clips/Debt2.gif

"A bilateral graph shows increases on one side of a zero line and decreases on the other. It is used when there are both positive and negative values involved in the data." http://www.pastpeak.com/archives/economy/index.htm

NOMINAL AREA CHOROPLETH

This is a nominal area choropleth map of Canada's vegetation taken from: http://atlas.nrcan.gc.ca/site/english/learningresources/carto_corner/veget.jpg

This type of map shows nominal data that is not ordered in any way however the areas are still clearly defined.

UNSTANDARIZED CHOROPLETH MAP

This is an unstandarized choropleth map of land use in 2002 taken from: http://www.nass.usda.gov/research/atlas02/Crops/Hay%20and%20Forage%20Crops%20Harvested/Forage%20-%20Land%20Used%20for%20All%20Hay%20and%20All%20Haylage,%20Grass%20Silage,%20and%20Greenchop,%20Harvested%20Acres%202002-choropleth%20map.gif

Unstandardized choropleths are not averaged and show raw data in the map.

STANDARDIZED CHOROPLETH MAP

This is a standardized choropleth map of the percentage of population aged 14 and under in Canada in 2006 taken from : http://www.statcan.gc.ca/pub/92f0138m/2008003/figures/figure3.1-en.jpg

Standardized choropleth maps show a standardized comparison of distribution among different areas.

UNIVARIATE CHOROPLETH MAP



This is a univariate choropleth map of water in the United States taken from: http://content.answers.com/main/content/wp/en/thumb/2/28/180px-Choropleth.gif

Univariate choropleth maps display a single set of data.

Sunday, December 7, 2008

BIVARIATE CHOROPLETH MAP

This is a bivariate choropleth map of Russia's Federal District that shows population density in 2002 and population change from 1989-2002 taken from: http://www.geog.le.ac.uk/russianheartland/DemographicMaps/images/PopulationMaps/RaionMaps/7RaionPopDenPerCh8902.jpg

This is a type of choropleth map that compares two variables.

UNCLASSED CHOROPLETH MAP

This is an unclassed choropleth map of the number of acres harvested for vegetables in the United States in 2002. Taken from: http://www.nass.usda.gov/research/atlas02/Crops/Vegetables%20and%20Melons%20Harvested/Vegetables,%20Acres%20Harvested%20for%20Sale-choropleth%20map.gif

This is the least accepted way of mapping because it is said the cartographer "loses the ability to direct the message of communication." Shadings that are proportional to the values in the data are assigned for this type of map.


CLASSED CHOROPLETH MAP

This classed choropleth map shows the hispanic percentage of population in each county of Florida and is taken from: http://images.google.com/imgres?imgurl=https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjW3KcKVUh5FId0SscXYtBQ4ATT9YvYcdOAWNxtxNoCUNmJxuYvmwdDSduCMvL4YB5wY1OpgKAqLdKxMh_GTU6C_xTgiI5Ee-MjKs1vw6FBe28-d6LMnpiRAveXK53kd1ovQjvn8iVUe90/s320/classed+choropleth+map.gif&imgrefurl=http://mavance2000.blogspot.com/2008/07/classed-choropleth-map.html&usg=__0rFgtG2hjlZ2rqilp86uSPKaxAU=&h=240&w=320&sz=72&hl=en&start=8&tbnid=ycpxSq8LBk0QxM:&tbnh=89&tbnw=118&prev=/images%3Fq%3Dclassed%2Bchoropleth%2Bmap%26hl%3Den

These type of maps show an easy way to visualize data over a geographic area. Here the shading intensity determines the quantity of the variable being measured.

RANGE GRADED PROPORTIONAL CIRCLE MAP


This is a range graded proportional circle map of the population in Canada in 2006 taken from: www.statcan.ca/english/Estat/guide/map-mul2.gif
This type of map uses circles to represent exact values rather than a range of values.

CONTINUOUSLY VARIABLE PROPORTIONAL CIRCLE MAP

This is a continously variable proportional circle map of major industries in West Germany in 1972 taken from: http://www.lib.utexas.edu/maps/europe/west_germany_ind_1972.jpg

These type of maps uses circles in diferent sizes to correlate to the quantity of the specific variable that is measured in the map.

DOQQ

This is a DOQQ of Lake Travis taken from: http://www.utexas.edu/depts/grg/hudson/grg360g/EGIS/final_project/spring04_projects/web_justin_reynolds/Lake%20Travis_files/blue_Travis_doqq.jpg

A Digital orthophoto quarter qudrangle (DOQQ) is
a representation of a quarter of the area of a conventional USGS 7.5-minute topographic map produced using aerial photographs at a scale of 1:12,000 (http://www.safnet.org/workinggroups/a2/A2_summer2008.pdf)

DEM

This is a Digital Elevation Model (DEM) of the Lake Tahoe Basin taken from: http://tahoe.usgs.gov/images/4ds/dem_zoom.jpg

DEMS are digital representations of ground surface topography or terrain. Used very frequently in GIS, these maps can be made of a grid of squares or triangular irregular networks.

DLG

This is a Digital Line Graphs (DLG) of the boundaries, hydrography, and transportation layers of Dancyville, TN taken from: http://edc.usgs.gov/images/dlg.gif

DLG's are "digital vector representations of cartographic information. Data files of topographic and planimetric map features are derived from either aerial photographs or from cartographic source materials using manual and automated digitizing methods." http://edc.usgs.gov/guides/dlg.html

Saturday, December 6, 2008

DRG

This is a digital raster graphic (DRG) representation of Illinois taken from: http://www.isgs.uiuc.edu/nsdihome/browse/igq/product_001/sampleimages/drg_detail.jpg

DRG is a scanned image of US Geological Survey topographic map. Geo-referencing information is added to these maps to associate them with their true position on the ground.

ISOPLETH

This map of a Japanese volcanic eruption contains isopleths and was taken from: http://www.volcano.si.edu/volcanoes/region08/ivm_arc/miyake/2507_04s.jpg

Isopleth lines connect points of equal measurment.

ISOPACHS



This is a map of isopachs of the ashfall from the eruption of Cerro Negro taken from: http://www.geo.mtu.edu/volcanoes/central_america/nicaragua/cerro_negro/gvn/images/2012neg4.jpg

Isopachs are countour lines that connect points of equal thickness.

ISOHYETS



This is a picture of isohyets in India taken from: http://www.unu.edu/unupress/unupbooks/80391e/80391E00.GIF

Isohyets on maps are curves that connect points where the function has the same particular value.

ISOTACHS



This is a picture showing wind directions using isotachs from: http://www.crh.noaa.gov/lmk/soo/research/papfigs/11794pap_fig3.gif

Isotachs are lines of equal wind speed drawn on maps.

ISOBARS

This is a picture of closed isobars around a low pressure cell taken from: http://www.newmediastudio.org/DataDiscovery/Hurr_ED_Center/Hurr_Structure_Energetics/Closed_Isobars/Closed_Isobars_fig02.jpg

Isobars are contour lines of equal pressures used in meteorology.

LIDAR

This is a LIDAR image of the site of the World Trade Center taken from: http://images.google.com/imgres?imgurl=http://www.noaanews.noaa.gov/stories/images/manhattan-lidar092701.jpg&imgrefurl=http://www.noaanews.noaa.gov/stories/s798.htm&usg=__qPas5ew9n62BjZBmwMxSJBkahow=&h=2056&w=3764&sz=1706&hl=en&start=6&tbnid=piJMuN9X0xzn0M:&tbnh=82&tbnw=150&prev=/images%3Fq%3DLIDAR%26hl%3Den

Light Detection and Ranging (LIDAR) technology measures the properties of scattered light to find information about a distant target.

DOPPLER RADAR


This is a doppler radar of Hurricane Andrew taken from: http://www.met.fsu.edu/orgs/explores/
Doppler radar uses the doppler effect of returned echoes from targets to measure their radial velocity.

BLACK AND WHITE AERIAL PHOTO

This is a black and white aerial photo of Wrigley Field taken from: http://www.horschgallery.com/admin/uploads/Products/Product326/bw29-black-white-wrigley-field-aerial-picture-photo-print-framed.jpg

Black and white aerial photos are similar to infrared photos in that they can show change in the earths surface. However, they typically are able to show more detail.

INFRARED AERIAL PHOTO


Infrared aerial photos are not too powerful but can be used to document changes in the environment.

CARTOGRAPHIC ANIMATION

This is a cartographic animation of Cancer Deaths in Nebraska by county taken from: http://maps.unomaha.edu/AnimArt/ActiveLegend/JavaScript/Cancer1.gif

A cartographic animation is the animation of data classification and a series of related variables from a single time period.

STATISTICAL MAP

This is a statistical map of aggrevated assaults in Denver, Colorado taken from: http://www.denvergov.org/Portals/335/images/SOPA_agg02.jpg

Statistical maps show the distribution of a variable over a given area.

Wednesday, December 3, 2008

CARTOGRAM

This is a cartogram of the worlds amphibian diversity taken from: http://www.amphibiaweb.org/amphibian/cartograms/cart_global_diversity.jpg A cartogram takes a variable and substitutes it for land area. As you can see it distorts the area to convey the pertinent information.

FLOW MAP



This is a flow map courtesty of: http://images.google.com/imgres?imgurl=http://mundi.net/maps/maps_014/august2000_small.gif&imgrefurl=http://mundi.net/maps/maps_014/&usg=__M47WvQ_xrwevOAxw1coAVBpT-sE=&h=363&w=400&sz=16&hl=en&start=3&um=1&tbnid=Z1kQB12E-xPQyM:&tbnh=113&tbnw=124&prev=/images%3Fq%3Dflow%2Bmaps%26um%3D1%26hl%3Den

It depicts traffic flow (in terms of voice minutes) between countries. The thicker the line, the more traffic there is.

Tuesday, December 2, 2008

ISOLINE MAP

This is an isoline map of the annual runoff depth in China taken from: http://www.unu.edu/unupress/unupbooks/80157e/80157E0T.GIF. Isolines are just lines joining continuous points of the same value. These can include altitude, temperature, and pressure.

PROPORTIONAL CIRCLE MAP

This is a proportional circle map of what the real world might look like as depicted by the cartographer. Taken from: http://mapmaker.rutgers.edu/355/dotProporCircle.jpg The area in each circle represents a value from the data set.

CHOROPLETH MAP

This is a choropleth map of the percent of hispanics in the state of Florida, courtesy of: http://www.ilstu.edu/~jrcarter/Geo204/Choro/Tom/hispanic_race_fl-H1_FINAL.gif

Choropleth maps are thematic maps and only show 1 set of data. For this reason a one color scheme was chosen and in a light to dark manner.

DOT DISTRIBUTION MAP

This is a dot distribution map of the world courtesy of http://www.bbc.co.uk/scotland/education/bitesize/standard/img/geography/population/g155.gif

This is a way of showing distributions over a given area using dots. However, as you can see by this map it can be misleading as this map would lead the reader to believe that only certain areas are populated!

PROPAGANDA MAP

This is a German propaganda map from http://www.newberry.org/K12maps/module_15/images/germanpropaganda.jpg

Propaganda maps are designed to have the maximum impact on the reader/viewer in an effort to persuade of them of a particular belief.

HYPSOMETRIC MAP

This is a hypsometric map of Tajikistan from http://www.rrcap.unep.org/centralasia/reapreport/Map/MOUNTAIN/map_2.jpg

Hypsometric maps use shading or tinting to show elevation and coutour of a particular area.

PLSS MAP

This is a PLSS map of Alabama from http://www.rootsweb.ancestry.com/~alfrankl/plss_basemap_alabama.jpg

The Public Land Survey System (PLSS) is a way of deviding land in the Unites States.

CADASTRAL MAP

This is a Delaware County Cadastral map courtesy of www.dalisproject.org/pages/findMapsheet.aspx

Cadastral maps show boundaries and ownerships of certain pieces of land.

Thematic Map

This is a thematic map of the Island of Hawaii courtesy of www.creativemappingsolutions.com/maps/themati...

A thematic map "displays spatial pattern of a theme or series of attributes." (http://en.wikipedia.org/wiki/Thematic_map