Wednesday, March 18, 2009

Choropleth Map (Gray scale)



For the Choropleth map shown in the left, Gray scale color scheme is used. Also, as mentioned in the lab directions, 5 equal interval classes are considered for this map, where class interval for each class is determined by dividing the range of the data by the number of classes (here it is 5) and upper limit is computed by adding class interval to the lowest value in the data. Class limits are then specified (shown in the legend).

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