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Table 2 Geothematics classification

From: Open-Source web-based geographical information system for health exposure assessment

Classification technique Description
Equal Range Divides the distribution of values (max - min) into equal ranges.
Equal Count Creates intervals so that class each has an equal proportion of the sample.
Natural (Jenks) Breaks Classes are defined according to apparently natural groupings of data values.
Standard Deviation It shows the distance of an observation from the mean. It calculates the mean value and generates class breaks in standard deviation measures above and below it.
  1. The Geothematics software allows for four methods of classifying data: Equal Range, Equal Count, Natural (Jenks) Breaks, and Standard Deviation.