Program in GIS

GEOG 5223 Project 7, 8, 9 & 10:
Final Report

Team Rectifiers
Randy Estrada, Patricia Laird, Henry Roberts, Brenton White



Overview
Data Structure
Digitizing
Data Entry Errors
Level of Effort
Error Analysis
Metadata Report
Future Mapping

 


Level of Effort to Georeference and Digitize Sanborn Maps

The level of effort is noted for the initial phase of the project, which required a fair amount of learning by each team member.  We expect that with experience and teamwork, the time required for each process will improve with time.

  • Georeferencing Timing—The average time to georeference a Sanborn map was approximately 35-60 minutes, depending on the nature of the Sanborn map.

  • Digitizing—The average time to digitize the streets and buildings was between 1-2 hours, depending on the nature of the Sanborn map.

  • Consolidating Database—It took approximately 4 hours to consolidate the four databases of the team members, align the necessary feature, and export the required shapefiles (Streets and Buildings) in geographic coordinates.

It is important to note that the above times are the first-time efforts of each of the team members.  Since the project will consist of many Sanborn maps for many years (1900, 1910, 1920, etc.), then the time required for each additional map will fall with the developing experience and competency of the team members.  It is estimate that, for the purposes of completing the entire project, each Sanborn map will take about 15 minutes to georeference and the digitizing of the streets and builds will be about 45 minutes per map.

It is also important to note that the project management will improve with time and that subsequent georeferencing and digitizing would be performed to speed up the steps and eliminate unnecessary consolidation of work, i.e., we would organize the project to get it done as opposed to give each of the "students" a chance to experience the joy of putting together a major GIS project!

 

Sources
 

GEOG 5223: Elements of GIS: Part 2 (ESRI Track) CD. Accessed September 2004.

How to Read Sanborn Fire Insurance Maps, University of Virginia Library website. http://fisher.lib.virginia.edu/collections/maps/sanborn/web/details.html.  Accessed September 2004.

GEOG 5223: Project 7, 8, 9 & 10: Final Project, Accessed September 2004.

 

This document is published in fulfillment of an assignment by a student enrolled in an educational offering of The Pennsylvania State University. The student, named above, retains all rights to the document and responsibility for its accuracy and originality.