Introduction

Objectives

Methodology

Analysis

Error Issues

Results

Three separate digitizing coverages were created, consisting of the southern, central, and northern portions of the base map.  Although this method created additional work - the coverages would eventually have to be matched and joined together as one - the coverages were created as a safety measure.  Only part of the digitized map would be affected in the event of a file deletion or technical error.  This method also served to divide up the digitizing workload where two people were assigned for each of the two lower coverages.

Since the digitizing table was too small for the base map, a minimum of two coverages were necessary to maintain accuracy between ticks.  A new master tick file had to be created to include the latitude and longitude coordinates that were out of range along the top northern end of the base map extent.