Univariate Choropleth Maps

http://oliverobrien.co.uk/category/geodemographics/



This is a univariate map because it only shows one set of data. This shows where houses are located.

unclassed choropleth map

http://www.esds.ac.uk/international/support/user_guides/gisoverview.asp



This map depicts the fertility rates for countries in Europe. Unclassed choropleth maps are choropleth maps on a much larger scale; the scales are not small enough to depict an accurate numbers, but rather present it where much of the country or area falls in the same interval.

Classed Choropleth Maps

http://my.ilstu.edu/~jrcarter/Geo204/Choro/



This map show the ratio of males to females in the united states and Puerto Rico. This is a classed choropleth map because it  uses smaller intervals to portray the data.

PLSS map

http://www.fairview-industries.com/standardmodule/mn-exmpl.htm

 

PLSS Maps are created from the Public Land Survey System, which divides the land of the United States into ownership. This map shows the presentational use of cadastral information.                    

 

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Nominal Area Choropleth Maps

http://andrewgelman.com/2007/10/some_cool_graph/



This is a Nominal Area Choropleth map because it depict nominal data where the data is quantitive and random. This is a map of the political party selections per each state based upon the poor voters.

DOQQ

http://www.crwr.utexas.edu/gis/gishydro00/Class/trmproj/Donnelly/termproject.htm




This is a DOQQ because it was delevoleped from raster images from aerial photos. This particular picture above is a red colored DOQQ of a 500 year flood plain.

Index Value plot

http://waterwatch.usgs.gov/?m=real&r=nc&w=real%2Cplot



This map shows the average streamflow index in north carolina between october and november. The value of comparison is 4. This qualifies as a Index value plot because the index is plotted instead of using an actual number. This type of plot gives a comparison, or normal, in order to base the values off of