Display Methods for Geographic Data Sets

Abstract

A pixel based contouring algorithm is described and used to display three sample world wide data sets. The use of contouring, color coding and hill shading is discussed and related to the spatial frequency content of the data. Contouring has problems in steep areas where the contour lines run together. Color coding brings out the low frequency content of the data. Hill shading brings out the high frequency content or texture. Color coding and hill shading may compliment each other when the data has a mixed high and low frequency content. Reprints.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1989
Accession Number
ADA224854

Entities

People

  • Jerry Landrum

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Amplitude
  • Bathymetry
  • Coding
  • Color Coding
  • Data Sets
  • Databases
  • Display Systems
  • Frequency
  • Graphics
  • Gravity
  • Gravity Anomalies
  • Information Operations
  • Intensity
  • Intervals
  • Magnetic Fields

Readers

  • Human-Computer Interaction (HCI).
  • Oceanography.
  • Radar Systems Engineering.