Maps are critical to many areas of study, from epidemiology to climate science
Scale is measure of the proportion between distances and sizes on the map and those on the area represented
Scale is measure of the proportion between distances and sizes on the map and those on the area represented
Projection is the process of making a globe, or portion of it, fit onto a flat plane.
But playing around with projections can lead to very interesting visuals
Projection centered on the South Pole
Thematic maps are meant not simply to show locations, but rather to show attributes or statistics about places, spatial patterns of those attributes and relationships between places. - Axis maps
The simplest method is by using dots to represent either individuals or groups of a fixed size
Geometric objects (usually circles) are scaled in proportion to quantities.
Some problems with perception.
A note about legends
A note about legends
A flow map shows movement of entities between geographic areas.
Choropleth map encodes information by means of assigning shades of color to defined areas such as countries, states, counties, etc.
A choropleth map can show different kinds of data, whether ordinal, interval, or ratio, etc.
Choropleth maps can be used for quick data exploration
Some notes
Cartogram is a map in which areas are scaled up or down based on some magnitude.
Abstract strategy of creating states that are the same size after transforming them into similar shapes.
Isarithmic maps or contour maps