A star plot displays multivariate data. Each individual star represents a single observation. Here is an example of a star plot with different car models http://www.itl.nist.gov/div898/handbook/eda/section3/gif/starplot.gif
Monday, August 4, 2008
correlation matrix
A correlation matrix basically computes the correlation coefficients of the columns of a matrix. Here is an example that includes Pearson Correlation Coefficients , Significance, Number of Observations.http://www.kltprc.net/policynotes/Gifs/Tab_005A_4.gif
similarity matrix
The similarity matrix shows a matrix of scores that explains the likeness between two data points. Here is an example of a similarity matrix. http://tomcat.esat.kuleuven.be/txtgate/images/distmat.png
Stem and Leaf Plot
Stem and leaf plots (or also known as stemplots) are similar to histograms. However they stemplots retain the original data to at least two significant digits, and put the data in order. Here is an example of ages of a family reunion. http://www.eduplace.com/math/mhm/5/06a/ts_5_6a_wi-1.gif
Box Plot
A box plot or a box and whisker plot boxplot graphically shows groups of numerical data through their five number summaries. Here is an example with stopping distances.http://math.youngzones.org/boxplot.gif
Histogram
A histogram is a display of tabulated frequencies displayed in a graphical context. It displays what shows what proportion of cases fall into each of several categories.http://www.aivosto.com/project/help/pm-histogram.gif
Parallel coordinate graph
A parallel coordinate graph connects a series of values, that are associated differently with a variable that measures multiple aspects of something. Here is an example for a baseball team.
Triangular plot
A triangular plot is a plot of three variables. Here is an example of an election triangular pot.
Wind rose
A wind rose is used by meterologists and it helps give a view of how windspeed and direction are distributed at a location. Here is an example of an English windrose. http://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Brosen_windrose.svg/600px-Brosen_windrose.svg.png
Climograph
A climograph is mainly used by scientists to show a particular location's average temperature and precipitation during the year. Here is an example of one for Memphis, TN
www.uwsp.edu/.../climate/climographs/memphis.jpg
Population Profile
A population profile is a chart that shows the number of people as function of their ages. Here is an example of a of a population profile for the UK census.
www.coventry.gov.uk/.../image/?image_id=1660022
scatterplot
A scatter plot uses Cartesian coordinates and its shows values for two variables for a data set. Here is an example used by the military.
www.army.mil/ArmyBTKC/i/focus/cpi_tools_13_S.gif
Index Value Plot
An index value plot is where a calcluated value is used and not an abosolute number . Here is an example with wine sales www.winespectator.com/.../022107chart.gif
Lorenz Curve
A Lorenz curve is a graphical representation , and it is a function of the cumulative proportion of ordered individuals mapped onto the corresponding cumulative proportion of their size.
Bilateral graph
Here is an example of a bilateral graph of lego assembly task, and as you see here there are two variables included. http://www.msl.ri.cmu.edu/projects/teleop/images/yaxis_bilateral.jpg
Unstandardized choropleth map
Here is an example of a unstandarized choropleth map which is basically unordered.
standardized choropleth
Here is an example of a standardized choropleth map http://www.statcan.ca/english/research/92F0138MIE/2008003/figures/figure3.1-en.jpg
Univariate choropleth map
A univariate map is a type that deals with only one subject that looks at occurences of a single event. Here is an example of a univariate map notice that it only has one color scheme which is blue. www.geovista.psu.edu/.../univariatemap.gif
Bivariate choropleth maps
A bivariate map shows two variables on one map by placing two different sets of graphic symbols or colors. The map in this example shows the population and the median
gis.esri.com/.../proceed/papers/pap171/p1716.jpg
Saturday, August 2, 2008
Unclassed choropleth maps
Unclassed choropleth maps where areas are shaded on a continous scale and not divided into classes. Noticed there is nothing on this map differentiating the different areas.
Classed choropleth maps
A classed choropleth map is where dated is group in a map to create classes. The categories include equal frequency, equal interval, and natural breaks. Here is the example of the United States that is classed with the percentage of individuals.
www.cdc.gov/.../2007/oct/images/07_0091_02.gif
Range graded proportional circle map
Range graded proportional circle map . The cartographer chooses circle sizes for adjacent classes so that the map reader can easily distinguish between circle sizes. Here is the example of the urban population with various circle range sizes.
mapmaker.rutgers.edu/355/dotProporCircle.jpg
Continously variable proportional circle map
A continously variable proportional circle maps is a map where the circle area reflects some attribute variable. Here is an example of a circle map of Canada grouped by mother tongue and the various circle sizes with different range sizes.
www.statcan.ca/english/Estat/guide/map-mul2.gif
Thursday, July 31, 2008
Digital Orthophoto Quarter Quadrangle
DEM
DLG
Digital line graphs are digital vector data that reprosent cartographic information. Here is an example of a digital line graph of the South Western part of the U.S.
www.versamap.com/UsgsDlg_CaNvAzUt.png
DRG
A digital raster graphic is basically an scanned image of a USGS topographic map. In this example of a DRG map of Alaska. Notice the topography defined in the visualization of the mountains photographed in Alaska
erg.usgs.gov/.../fs10602.graphics/alaska.jpg
Isopleth
Isopleths are items of meterological charts that connects points that share an equal value of some variable. In this example, the map of the temperatures in the United States. You can see the various lines circling the areas with the same temperatures.
Isohyet
An isohyet is a line on a map or even a chart that connects areas with equal rainfall. In this example we have a map of Hong Kong with isohyets being represented as blue lines
www.hko.gov.hk/.../images/figure/figure332.gif
Friday, July 18, 2008
Isotachs
Isotachs are lines on a given surface connecting points with equal wind speed. Included is an example of isotachs of the United States depicted in shades of purple with the higher speeds
wxmaps.org/pix/avnmr5.00hr.png
Isobars
An isobar is a contour line of equal or constant pressure in meteorology. Here is an example of an isobar in the country of Germany . Notice the different pressure signified by the different color lines.
z.about.com/d/german/1/0/1/J/aWetteurfronts.jpg
LIDAR
Lidar stands for Light Detection and Ranging. LIDAR is an optical remote sensing technology. Lidar measures properties of scattered light to find range of a target. Above is an Austrailian LIDAR. www.aad.gov.au/.../twia_lidar_beam_lge.jpg
Doppler radar
The doppler radar is a form of radar of using the doppler effect, by which the returned echoes from targets to measure radar velocity. The example above is of a Doppler in Melbourne
mirror.bom.gov.au/.../melb_doppler_radar.jpg
Black and white aerial photo
Here is an example of a black and white aerial photo of a city in California. The photos are shot from a plane.
online.redwoods.edu/.../BTShusteraerialview2.jpg
Wednesday, July 16, 2008
Infrared photos
Infrared photos can be used to show changes in the environment, forestry, wetlands, and the oceans. Included in this example is a infrared photo of a forest
Cartographic Animation
Cartographic animation is a visualization technique that displays dynamic geographical phenomena through its ability to show interrelations amongst geospatial data's components, location, attribute and time. Here is an example of a cartographic animated data of Nebraska and cancer related deaths
maps.unomaha.edu/.../JavaScript/Cancer1.gif
Monday, July 14, 2008
Statistical Maps
Statistical Maps are used to demonstrate the distribution of a variable over a geographic area. The example included is a map of the distribution of corn by acres in the United States
Cartograms
A cartogram is a map it is abstracted to where base of which is not true to scale. In this included example is the map of threatened and endangered species percentages by country. Notice the various sizes of the continents are distorted. http://www.amphibiaweb.org/amphibian/cartograms/cart_threatenedpercentage.jpg
Isoline maps
An isoline map is a map that has continuous lines joining points of the same value. Some examples of isoline would be equal altitude temperature ,barometric pressure, wind speed and wind direction. This example is of China and notice here the different lines (dashed or straight) connecting different parts of the country
Proportional Circle Map
A proportional circle map scales circle area to the value that is ususally a total for a geographic area on a map. This map can be an an alternative to the choropleth map. This image is a proportional circle map of Germany and the major industries
www.lib.utexas.edu/.../west_germany_ind_1972.jpg
Monday, June 2, 2008
Choropleth Map
Choropleth maps use color to portray quantitative information. It can be used for percentage and density for a geographic region. This example looks at the percentage amount of Hispanic population per a county in Florida.
Dot Distribution Maps
Dot distribution maps are used to show a quantitative number of a geographic area. Each dot refers to a number. In this example of earth each dot represents 100,000 people.
Propaganda Maps
Propaganda Maps are those used to sell or used to persuade an audience's opinions about a targeted subject. The map in this example is used show states who hire illegally.
PLSS Map
Here is an example of a PLSS Map (Public Land Survey System). These maps are used in America and they are typically for surveying and identifying land parcels. This information is used for titles and deeds of undeveloped land. In this example is a PLSS map of the state of Alabama.
Tuesday, May 20, 2008
Cadastral Maps
Cadastral Maps focus on boundaries which map include street names, lot numbers etc. The example included is a map of residential area and the streets, small bodies of water, and highways. www.rpdata.com/news/images_rp/feature/mapping.jpg
Thematic Maps
Thematic Maps contain a basic theme or spatial pattern. For instance, the map in this example is provided by the U.S. Census bureau and its displays the population shifts over various years. The different color groupings corresponding to the different categories.
www.sou.edu/Geography/JONES/GEOG280/stpop96.GIF
Topographic Map
Here is an example of a topographic map of India. The uniqueness of topographic maps is that shows the contours of the land as well as bodies of water. In this example we see several bodies of water such as the Arabian Sea and Bay of Bengal.
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