Generalization Animation
A generalization cartographic animation depicts changes caused by different
numbers of classes. The maps depicted in this animation change from two
to seven classes and show the effect of the number of data categories on
a mapped distribution. This animation depicts the percent of births to mothers
under the age of 20 for the United States in 1980. The first frame in the
animation is a two-class map and the last frame is a seven class map. The
legend is represented as a histogram with bars indicating the number of
observations in each category.