Photomechanical experiments in automated cartography

Journal of Research of the U.S. Geological Survey



The U.S. Geological Survey recently undertook the investigation of two seemingly unrelated cartographic tasks: (1) the preparation of map copy for digitizing and (2) the production of experimental slope maps. Both tasks, however, require techniques and equipment for changing or manipulating the line weights of existing map symbols and producing suitable reproduction copy. After a study of existing equipment, a prototype revolving illuminator was designed and fabricated for experiments in line-weight manipulation. Sufficient exposures have been made with the device to indicate that positive control of line-weight increases and decreases up to 0.2 inch is attainable. The device has been used for photomechanical experiments in slope mapping, hill shading, and preparation of map copy for digitizing.

Publication type Article
Publication Subtype Journal Article
Title Photomechanical experiments in automated cartography
Series title Journal of Research of the U.S. Geological Survey
Volume 1
Issue 2
Year Published 1973
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description 5 p.
First page 223
Last page 227
Country United States of America
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details