Accession Number : AD0721018

Title :   CONPLOT II - A Contour Generating Program.

Descriptive Note : Final rept.,

Corporate Author : BRADFORD COMPUTER AND SYSTEMS INC NEW YORK

Personal Author(s) : Fleshel,Bernard

Report Date : FEB 1971

Pagination or Media Count : 104

Abstract : A contour generating system (CONPLOT II) is described whose input is a UNAMACE created magnetic tape. CONPLOT II is an improved and expanded version of CONPLOT I. Output of this sytem is a large cartographic quality contour map which can be combined to form still larger maps. This contour map includes (a) Universal Transverse Mercator Grin, (b) variable contour levels, (c) multiply 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) a contour smoothing algorithm, (d) fitting of resultant contours to streams to insure 'natural appearing' intersections, (e) fitting of resultant contours to roads to achieve right angle road/contour crossings, and (f) automatic mosaicking of multiple models into a single large plotted map. (Author)

Descriptors :   (*MAPPING, *COMPUTER PROGRAMMING), CURVE FITTING, ALGORITHMS, GRAMMARS, LEAST SQUARES METHOD, INSTRUCTION MANUALS

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE