Saturday, August 1, 2009
This bivariate Choropleth map was found at: http://2.bp.blogspot.com/_mNAOq8ApgBA/SViWmdk-5aI/AAAAAAAAAgY/0fEHL3zyvsk/s400/Income+Distribution+By+Race.gif Bivariate choropleth maps show data for two variables. For example, this could be the population by race, or gender in the U.S.
This Unvariate Choropleth map was found at: http://www.mint.com/blog/wp-content/uploads/2009/04/mint-income-r3.png
Unvirate choropleth maps are useful in showing data for a single variable. This could be the percentage of population that are getting the swine flu, or that make more than $50K per year. It would not show multiple variables data.
This Nominal Area Choropleth Map was found on https://courseware.e-education.psu.edu/courses/geog482/policies.shtml. It represents minority groups with the highest percentage of the population.
A similarity matrix depicts a close relationship of similarities between two data points. This one was found at: http://images.google.com/imgres?imgurl=http://www.protonet.cs.huji.ac.il/images/gd_clust_dist2.gif&imgrefurl=http://www.protonet.cs.huji.ac.il/guided_tour.php&usg=__FENk_G7gZIiU16Nn-qrn2GghoJY=&h=636&w=462&sz=24&hl=en&start=22&um=1&tbnid=dcZESXTBDGhIJM:&tbnh=137&tbnw=100&prev=/images%3Fq%3Dsimilarity%2Bmatrix%26ndsp%3D21%26hl%3Den%26rlz%3D1T4ADBF_enUS315US316%26sa%3DN%26start%3D21%26um%3D1.
This correlation matrix was found at: http://www.kltprc.net/policynotes/Gifs/Tab_005A_4.htm. A correlation matrix shows the direction and strength of a relationship between 2 variables. This could be used to depict values on in a geographic area such as race and income, or education level.
This is a statistical map from http://www.denvergov.org/2001_crime_stats/AllOtherCrimes/AllOtherCrimes2/tabid/377596/Default.aspx. Statistical maps apply statistical data values and visualization technique to depict something like crime statistics.
The following topographic map was noticed on: http://geology.isu.edu/geostac/Field_Exercise/wildfire/topography.htm
This type of map shows geographic features of an area, and shows contour lines that indicate terain direction, the rise and fall of the terrain, how gradual or severe the slope is, and other features.
This is the a world population profile that shows the age, gender, distribution, and number of people in the World Population. This kind of graph is quite useful, and as you can see shows impacts of one elements, AIDS, on the world's population. This map came from: http://www.fao.org/docrep/005/y8331e/y8331e05.htm
A stem and leaf plot is a type of visualization that depicts the distribution of a dataset and shows the individual values. The values on the left are called the stem and the data on the right are called the steam. This type of graph is good for organizing large amounts of data. This plot was found on: http://www.learner.org/courses/learningmath/data/session3/part_h/homework.html
Saturday, July 4, 2009
Thursday, July 2, 2009
This Dopplar radar image is from URL: http://www.weatherusa.net/blog/images/doppler-orlando-1943.gif, and depicts weather data to forcasters using satellites that utilize the Dopplar effect of returned echoes from targets (e.g. raindrops).