Geography 387 –Fall 2011 Lab 4 Cartography and Classification 1 Lab 4: Cartography and Classification 1.0 Overview This lab will introduce you to two main concepts: 1) how to join an attribute table to the attribute table of an existing feature class, and 2) how to make choropleth maps using a variety of classification methods. We will continue with our counties feature class from Lab 3. We will then download year 2000 water use data from the National Atlas site and make a variety of maps for the conterminous United States. The overall steps of this lab are: Import existing GIS data into a new file geodatabase Compare fields in the original shapefile to fields in the geodatabase feature class Download water use statistics from National Atlas Read the metadata for the water use statistics Relate water use statistics to the county feature class Symbolize the counties with total water use Create a map of total daily water use with different classification schemes Create a map of annual ground water use per hectare Create a map showing a large aquifer along with annual ground water use per hectare
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