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General Technical Report
Title: Simulating forest pictures by impact printers
Author: Amidon, Elliot L.; Dye, E. Joyce
Date: 1978
Source: USDA Forest Service General Technical Report PSW-025, 11 p.
Station ID: GTR-PSW-025
Description: Two mechanical devices that are mainly used to print computer output in text form can simulate pictures of terrain and forests. The line printer, which is available for batch processing at many computer installations, can approximate halftones by using overstruck characters to produce successively larger “dots.” The printer/plotter, which is normally used as an interactive terminal, permits fine adjustment of the space between characters in the plot mode. This control over blank space improves tonal appearance and permits solid black. The two types of printers have complementary uses. The line printer is best for high volumes of data, while the slower printer/plotter offers a greater range of densities.
Key Words: Mapping systems, computer simulation, pattern recognition, impact printers, grey scale
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Citation
Amidon, Elliot L.; Dye, E. Joyce 1978. Simulating forest pictures by impact printers General Technical Report PSW-025. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 11 p.