Sunday, July 17, 2011

Unstandardized Choropleth Map

http://pubs.usgs.gov/fs/2005/3051/

The map shown above ia an unstandardized choropleth map. The main fact about these choropleth maps is that they do not aerially average the data in which the map represents. One interesting thing about these maps is that they really do their own thing when it comes to comaprison to other types of choropleth maps. The choropleth map illustrates the total water withdrawals across the United States in direct relation to livestock, mining, agriculture, etc.

Nominal Area Choropleth Map

http://www.veiled-chameleon.com/weblog/archives/2004_07.html
The nominal area choropleth map that is shown above illustrates the swing states in the persidental election of 2004. Each state is represented with a different color, which is significant for the political majority of each state shown. This type of choropleth map is typically used by people to represent nominal data in a map form. It is common for these maps to be used to display different qualitative data on a specific map. This is the main pattern of interest for the maps, they are used to display data on a map.

Isotach Map

http://www.erh.noaa.gov/btv/events/28Oct2008/ua2.php
This isotach which is shown above is illustrating an upper trough that is located on the east coast of the United States. The contour lines which are closest together are representing the stronger winds associated with the upper trough. The isotach maps show lines across the surface with connecting points that have equal wind speeds overall. The main point of interest with these maps is to show where various upper troughs are located and where high winds can be expected.

Isopleths

http://www.krisweb.com/kristenmile/krisdb/html/krisweb/maps/geomap_ten.htm
This is an isopleth map which shows the rainfall isopleths for the ten mile river watershed. The isopleths are depicted with the yellow lines which can be seen on the map. Different annual rainfall levels are shown in different shades of green on the map. The isopleths on the map are shown in ten mile sub basins. The main focus of the map is to show the annual rainfall amounts in the ten mile river watershed.

Cadastral Map

http://www.icsm.gov.au/mapping/maps_cadastral.html

Above is an example of what is known as a cadastral map. This map is illustrating a gravel reserve. These map are typically used as land administrative tools and they are usually not an up to date map to rely on. This type of map is generally used to show the different boundaries of land and what person own individual pieces of land on the map. This is the main point of interest when referring to cadastral maps, in that they are used to locate land and the boundaries and ownership.

Thematic Map

http://www.bostonstudies.com/thematic-maps.html

This thematic map pictured is illustrating the range of median household income for the city of Boston and the surronding areas for year 2008. The different variables of income are shaded in different colors on the map. These maps are used to illustrate a specific theme in a certain area on a map. Some common interests of thematic maps are, social, physical and economic aspects which are covered on a map.

Propaganda Map

http://angrywhitedude.com/tag/texas/

This propaganda map illustrates many republicans which are moving from California, which is a predominately democratic majority state. The map is easily identified as propaganda because it immediately mentions red states and blue states right above the map on the web page. The main pattern of interest with these types of maps is that the creator is attempting to sway someones opinion on a certain topic, or simply bash one group or another.