CONPLOT I. A CONTOUR GENERATING PROGRAM.

Abstract

A contour generating system (CONPLOT I) is described whose input is a UNAMACE created magnetic tape. Output of this system are cartographic quality contour maps which can be combined to form larger maps. These contour maps include (a) Universal Transverse Mercator Grid, (b) variable contour levels, (c) labelled and broadened index contours, (d) depression indications, and (e) a variable output plotting scale. The following data handling techniques are used: (a) parallel processing, (b) random access, (c) binary searching, and (d) binary sorting. The internal processing of the input data includes (a) redundant data elimination, (b) noise elimination and data smoothing by either an Area Smoothing Algorithm or a Least Squares Smoothing Algorithm, (c) contour smoothing equations and (d) fitting of resultant contours to streams to insure 'natural appearing' intersections. The report also includes an analysis and a discussion of algorithms used for contour map shading.

Document Details

Document Type
Technical Report
Publication Date
May 01, 1970
Accession Number
AD0709675

Entities

People

  • A. J. Stewart
  • B. Fleshel
  • Mikhail Gilman

Tags

DTIC Thesaurus Topics

  • Algorithms
  • Depression
  • Elimination
  • Equations
  • Magnetic Tape
  • Mathematics
  • Parallel Computing
  • Parallel Processing
  • Plotting
  • Tapes
  • Transverse

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Atmospheric Science/Meteorology
  • Computer Science.