VISUAL and SLOPE: perspective and quantitative representation of digital terrain models.

Abstract

IThis file was created by scanning the printed publication. Text errors identified by the software have been corrected; however, some errors may remain. Two computer programs to help timber-harvest planners evaluate terrain for logging operations are presented. The first program, VISUAL, produces three-dimensional perspectives of a digital terrain model. The second, SLOPE, produces map-scaled overlays delineating areas of equal slope, aspect, or elevation. Both programs help planners familiarize themselves with new terrain and obtain a general feel for the land. Included are descriptions of operating procedures, descriptions of major algorithms, suggested applications, and limitations. Guides for the programs are available from the authors.

The SKYTOWER and SKYMOBILE programs for locating and designing skyline harvest units.

“…Other programs in PLANS help planners design highlead yarding units (HIGHLEAD; Twito and others 1987b),lay out preliminary transportation systems (ROUTES; Reutebuch in press), estimate cable-yarding cost and production (SIMYAR; McGaughey and Twito 1987), visualize topography (VISUAL and SLOPE;McGaughey and Twito 1988), and develop DTMs from topographic maps (MAP; Twito and others 1987a).…”