Bivariate choropleth map

A bivariate chloropleth map is a variation of chloroplath map that strives towards illustrating a particular map though graphics that use different symbols to explained different information. These types of maps tend to bring about information that reveals information which helps to compare many different types of figures. In addition these maps relate spatial distribution through different geographical areas. This map qualifies as a bivariate chloropleth map because all of the above characteristics I have described are used in the illustration.

http://www.scisoftware.com/environmental_software/detailed_description.php?products_id=138

Unclassed choropleth maps

An unclassed chloropleth map has a concept that is difficult to grasp. The data values are not proportionate to the shading that correlates the information and the colorations together. Although these types of maps may not seem impossible to figure out, they are highly criticized by cartographers because they claim the overall effectiveness of the map is too complex. This map holds all of the features of an unclassed chloroplah map. The major difference between this map and a classed chhloroplath map is this map does not have an average statistic towards each color on the map.

http://en.wikipedia.org/wiki/File:ElectionMapPurpleCounty.jpg  

Classed choropleth maps

When discussing a classed cloroplath we must include what the different colors and variations represent in these types of maps. Shading, height, and color intensity are the main characteristics describing one of these types of maps. The frequencies in these map types help to describe the overall view of the map. This map qualifies as a classed chloroplath map because each of the shaded areas counts as class interval levels. This particular map describes how much each student in the public education system in that particular school year.

 http://personal.uncc.edu/lagaro/cwg/color/Choropleth-5Good.gif

Range graded proportional circle map

When determining an example of a range graded proportional circle map, we must take into account that all of the data has been divided into two different groups. The individual in charge of making the map (cartographer) chooses how big and how small the circles must be to represent the data at hand. The different types of circles can show us how big a population is or how small one is.


http://propagandica.files.wordpress.com/2008/11/circlesizeisproportionaltotheamounteachcountysleadingcandidateisahead.jpg

Continuously variable proportional circle map

A continuously variable proportional circle map can show us exactly how multiple variables can be expressed in appropriate matters while still attaining proportionality. This map clearly demonstrates exactly what I have just described. Obviously a bigger circle on the map represents a bigger population of people but at the same time some type of variation is being demonstrated. There is a lot of information to be discovered by reading this small map.

http://geographyfieldwork.com/DataPresentationMappingTechniques.htm

DOQQ Map

A DOQQ map is an abbreviation for Digital Orthophoto Quarter Pads. This digital photo is an example of an aerial photo in which different areas of terrain that has been removed from the photo. This type of map has a unique way of tying together the image characteristics of the photo with the geometric make up of the map. This map qualifies as a Digital Orthophoto Quarter Pads map because the map is broken down into unique different sections and some of the land terrain had been removed to help emphasize the actual structural make up of the land and not the terrain.

http://www.lacoast.gov/maps/2004doqq/

DEM Map

A DEM map is short for a "Digital Elevation Model". This is usually depicted by a map which uses 3-Dimensional figures to represent the images. These types of maps are commonly used when describing craters on the surface of the moon or canyons and mountains when depicting a scene here on Earth. Most of the time this model only references height and depth without describing any of the other features that could be used to describe that particular type of terrain. This Map exemplifies a DEM map because it illustrates the map the same way we just described it. It shows us the elevations without giving us too much descriptive types of detail.

http://www.waialeale.org/graphics/kauaioverview.jpg

DLG map

The DLG map is a digital line graph which is formed by the USGS. These types of maps come in three different types of scales including large scale, intermediate scale, and small scale maps. The DLG map has nine different categories including public land survey system, boundaries, transportation, hydrography, non-vegetative features, survey control and markers, man-made features, and vegetative surface cover. This map is represents many of the different features I have just discussed.

http://weather.unisys.com/usgs/3sec/index.php

DRG Map

DGR is an acronym for Digital Raster Graphic. Pretty much, a Digital Raster Graphic is a scanned image of a USGS map which includes all different types of information. The DRG maps are of extreme high quality with maps which are scanned with a minimum of 250 dots per inch.  

http://www.ghostdepot.com/rg/maps/drg%20map%201899%20red.jpg