J. Harrison Zegel's Map Blog

http://www.geomart.com/products/geodata/ DOQQ, or Digital Orthophoto Quadrangle Quads, is an electronically reassembled image from an aeri...

http://tahoe.usgs.gov/DEM.html DEM model is a raster based image produced through the help of software, most commonly used by the USGS. Th...

 http://en.wikipedia.org/wiki/Ternary_plot A triangle plot, or ternary plot, or de Finetti diagram, is a plot whose data set functions a...

http://en.wikipedia.org/wiki/Wind_rose A windrose is a visual graph used by meteorologists to show the strength, direction and frequency o...

 http://en.wikipedia.org/wiki/Climograph A climograph is a clever graph that shows correlations of basic characteristics of an areas clima...

http://geo.acaps.org/docs/435 A population profile is a visual map that is used in demographics and shows the number of people as a functi...

http://en.wikipedia.org/wiki/Scatter_plot A scatter plot uses cartesean coordinates to display any number of points as they relate to two ...