Thursday, April 22, 2010

dem map

This map shows elevations in 3D

http://edc.usgs.gov/images/dem.jpg

range graded proportional circle map

http://www.d.umn.edu/geog/cartfolder/HTML%20Pages/Prop-Symbol2.htm

This map is when the size of the circle goes with the size of the population, so the bigger the circle, the higher pop.

DOQQ


A digital orthophoto quadrangle (DOQ) is a computer-generated image of an aerial photograph in which image displacement caused by terrain relief and camera tilts has been removed. It combines the image characteristics of a photograph with the geometric qualities of a map.

http://www.isgs.uiuc.edu/nsdihome/webdocs/doqs/images/charleston_q30.jpghttp://www.isgs.uiuc.edu/nsdihome/webdocs/doqs/images/charleston_q30.jpg

Isobar

this map is a line on a weather map connecting points of equal atmospheric pressure. Canbe useful in determining high and low pressure which form storms and storm tracking


Friday, April 9, 2010

Isohyets

These maps use lines to show rainfall. You can see by the colors and numbers the amount of fall each year. This is very good in keeping record of the rain fall per season.

DRG MAP

http://www.forestpal.com/images/drg.gif
These maps are scanned topographical maps, and include the same detail as the topographic map.

Cartographic Animation


This map is a frozen picture of an animation that shows a movement in the information it is trying to depict. Another good esample is the weather forecast, when you see the storms moving in.

Statistical maps

These maps are numerical data. It groups it into sections based on that. This map is on the local authority in the UK.
http://www.scotland.gov.uk/Resource/Img/37432/0008378.gif






Monday, April 5, 2010

Isopleths




http://www.arb.ca.gov/newsrel/isopleth.jpg

This map generalizes and simplifies data. This one for example shows how much diesel being released is leading to cancer effects in california.

Isopach


This is an areal map, that is used a lot for looking for things such as oil and underground structural analysis.

Isotachs

http://www.zamg.ac.at/docu/Manual/SatManu/Exercises/JeCl/images/jf2qspa00.gif

This map shows the upper atmosphere and thee jet streams. It is a wind map.

Wednesday, March 31, 2010

classed choropleth map


This map uses smaller intervals to portray the data. There is a scale and is usually broken into color differnces to match the area on the scale.

Bivariate Choropleth Map


A bivariate map displays two variables on a single map by combining two different sets of graphic colors. This shows two different information at the same time. This isa gif animation that shows the two.

Univariate Choropleth Map


dISPLAYS ONLY SINGLE VARIABLE. THIS IS SHOWING THE POVERTY IN THE US.

standardized choropleth maps


Unstandarizied Choropleth


This map shows hazaderous waste. Unstandarizied Choropleth maps are maps where the data has not been averaged. The data is presented in numerical values.

Tuesday, March 30, 2010

DLG


http://ga.water.usgs.gov/olympics/columbus.dlg.gif
THese are digital line graphs that show boundaries, roads, and other various information found on topographical maps.

DLG


http://ga.water.usgs.gov/olympics/columbus.dlg.gif

LIDAR

http://coralreefs.wr.usgs.gov/images/lidar_map.jpg
LIDAR stands for Light Detection and Ranging. This type of remote sensing employs the use of laser light to help gather images. It stands for Light Detection and Ranging. This type of remote sensing employs the use of laser light to help gather images.

Nominal Area Choropleth Maps


This type of data is quantitative and random and broken into different colors . The different colors represent variations in data. Most will havea key onthe side to see where the colors fall.