Tuesday, April 19, 2011

Correlation matrix

A correlation matrix uses statistics to show the linear strength between two different sets of data. These are represented on both the axis. link

Similarity Matrix

Similarity matrix is a comparison between two different sets of data points and is shown in a matrix.When the colors are more different that means that the two points have a greater difference. link

Stem and Leaf Plot

Stem and Leaf Plots are used to help numerically organize data. The Stem is typically the place holder while the leaf represents the second number as well as the frequency of the stem. Stem and Leaf plots are useful for seeing a graphical representation of a series of data. link

Box Plot

linkBox Plots are used to group data into five quadreds. They use a measure to show the 25% to the 75% percentile. Box Plots are excellent at finding averages and medians of data sets. This is a generic example of a boxplot.  

Histogram

A histogram is a visual representation of the distribution of data. The more times that a variable comes up the higher that the bar for that variable will be. As this Histogram shows, this is extremely useful in business and in this example used to predict sales.link

Parallel Coorinate graph

Parallel coordinate graphs are used to show numerous amounts sets of data. This graph shows the genes to cell ratios. Each line is a different variable. Every line has a connection all the way through the graph. link

Triangular Plot

linkA triangular plot plots information using three variables that all come out to a constant.

Windrose

A windrose shows the different wind speeds and wind directions of a specific place. They were the predecessor of compass roses. This is an example of what modern windrose looks like. link

Climograph

A climograph shows the precipitation and temperature for a specific place for a specific time frame. It allows a person to quickly judge the type of climate a place has. link

Population Profile

A population profile is a chart that expresses a populations numbers in regard to age.  link

Scatterplot Map

A scatterplot map displays information with two variables. Each set of information is displayed as a dot on the graph. This graph is a scatter plot graph with the two variables of a wife's age an her husband's age. link

Friday, April 15, 2011

Index value plot

An index value plot map is a type of visualization map. It is when a line graph has an index value plotted on it This shows the precipitation in North Carolina for January, February, and March. link

Friday, April 8, 2011

Bilateral graph

A bilateral graph shows both positive and negative data. It shows information that has gone up in one thing and down in another. link

Nominal area choropleth map

Nominal area choropleth map displays information based on divisions that are already set, such as county lines. This map is divided by county lines and displays the access to safe drinking water. link

Unstandardized choropleth map

An unstandardized choropleth map shows raw information without standardizing. For instance it will just give population numbers and not take into account the amount of land that those people are spread out on. The top map is an unstandardized choropleth map and the bottom map is a standardized choropleth map. link

Standardized choropleth map

 Standardized choropleth map displays standardized information on a map. Standardized information is something like people per square mile rather than just a simple count of total number of people. link

Thursday, April 7, 2011

Univariate choropleth maps

I univariate choropleth map is a choropleth map that only displays one variable. This map demonstrates the fertility rates of the world from 2000-2005. link

Bivariate choropleth maps

link A bivariate choropleth map displays two sets of information on one map in order to compare and analyse them. This shows the emissions per GDP and Growth Rate of the world.

Unclassed choropleth maps

Unclassed chloropleth maps that do not group similar data into groups. Every different numerical value is given a specific color. Usually the colors are a dark color for the largest value that fades as the values get smaller. link

Wednesday, April 6, 2011

Classed Chloropleth Map

Classed chloropleth maps are chloropleth maps that are broken up into smaller chunks to portray statistical or aerial information. Typically different colors are used to differentiate between the classes.  link

Range graded proportional circle map

A range graded proportional circle map is a proportional circle map where the circles size is dependent on the size of the range it is providing information for. This map is a depiction is of the population distribution in Africa in 1990. link

Continuously variable proportional circle map

Continuously variable proportional circle map depict information about different areas. The circles show the magnitude of the information that is being displayed. The bigger the circle the greater the magnitude. link

DEM map

DEM stands for digital elevation model. DEM maps digitally represent elevation changes in an area. This is a DEM map of part of the Ivory Coast. This map is also a hypsometric map because it displays the different elevations in different colors.  link

DLG Map

DLG stands for digital line graph. DLG maps typically use information gathered by the USGS. DLG maps are digital vector representations of map information. Aerial photos are typically taken and then the information from them and topographic maps are digitized. This map is a topographic DLG of a part of Massachusetts.  link

DRG Map

DRG stands for Digital Raster Graphics. A DRG map is a scanned version of a USGS map. It is basically a digital topographic map. This DRG map is of a part of Bushkill, PA. link

Isopleth Map

Topographic, Isobar, Isotaches etc are all examples of isopleth maps. An isopleth is any contour line that connects things of an equal value. This map shows the different temperatures in Mexico. It is also a thematic map because it is shaded in different colors and focuses on temperature.  link

Isopach Map

An isopach map is also like a topographic map but its contour lines are of the thickness of a rock different places. This map is also a hypsometric map because it shades the different thicknesses of rock in different colors. link

Isohyet Map

Following the same pattern as the last two posts this map shows connecting lines that are of the same rainfall in given period of time. This is a map that shows isohyets for the United States on June 13th and 14th, 2010. This map is also a planimetric map in regards to how it shows how the states are divided up. link

Isotachs Map

An isotachs map is also like a topographic map but it connects the wind speeds that are the same. Weather forecasters use this map a lot to show what is on its way to an area. link

Isobar Map

An Isobar map is very similar to a topographic map but instead of lines connecting the same elevation an isobar is a line that connects equal atmospheric pressures. This isobar map is of a region in New Zealand. link