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Vol.
31, No. 2 (Summer 1994)
An Intensive Comparison Of Triangulated Irregular Networks (TINS) And
Digital Elevation Models (Dems)
By MARK P. KUMLER
Monograph 45
Introduction
Objectives
Terms And Definitions
Background
Outline
The Experiment
The Study Areas
The
Source Data: USGS DLG Hypsography Files
The Models
The Test Points
Making The Estimates
Results And Analysis
Quantifying The Accuracies (The Different Error Measures)
Checking Observed Differences For Statistical Significance
The Different Sets Of Test Points
The Two DEM Models: Linear Vs Inverse-Distance
The Two OEM-Based Tins
The Best DEM Vs The Best OEM-Based Tin
The Three Contour-Based Tins
The Different Sets Of Test Points, Revisited
Return To The Three Contour-Based Tins
The DEM Vs The Contour-Based Tin
The Super-Tin Vs The DEM (The Re-Match)
A Visual Comparison
Summary Of Results
Conclusion
Directions For Future Research
Final Words
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