Scholarly record
DISTORTION ANALYSIS OF MAP PROJECTIONS
Abstract
In this study, analysis and visualization of map projection distortions have been discussed. For the realization of the distortion analysis in practice, an auxiliary program was developed by MATLAB program, to calculate the amount of distortion. At the stage of the calculation of distortion the world map projections have been focused on and equations of these projections have been used. The points of interest were chosen as the intersection points of the geographic network of the original surface. 5ox5o geographic network intersection points were taken into consideration for the visual analysis can be performed in a consistent way. The calculated distortion values are; the maximum linear distortion at any point a, the minimum linear distortion at any point b, linear distortion along the parallel k, linear distortion along the meridian h, maximum angular distortion $\omega$ and the areal distortion value p. In this context, Tissot indicatrix, isograms method, color method and the use of graticule in analysis have been discussed and implemented to selected projections. To visualize the amount and distribution of distortions of map projections, MapInfo 8.5 Professional software and its tool Vertical Mapper 2.1 have been used. A detailed comparison of selected projections has been carried out with the obtained results. As a result of the comparisons, which world map projection is more appropriate for the purposes has been examined.
Publication details
References7
Mulcahy, K. A. Spatial Data Sets and Map Projections: An Analysis of Distortion, PhD Thesis, The City University of New York, 1999, pp 1-2
Eldrandaly, K. A. A COM-based expert system for selecting the suitable map projection in ArcGIS, Expert Systems with Applications, Egypt, vol. 31, pp. 94-100, 2006
http://en. wikipedia.org/wiki/Map_projection
Robinson, A. H., Maorrison, J. L., Muehrcke, P. C, Kimerling, A. J., Stephen, C. G. Elements of Cartography. 6th ed. New York: J. Wiley&Sons Inc., 1995
Snyder, J. P. An Album of Map Projections, Geological Survey Professional Paper U.S. Geological Survey, University of Minnesota, U.S. 1453, 1989
Maling, D. H. Coordinate Systems and Map Projections Pergamon Press, Oxford ; New York, 1992 pp. 83-254
www.basarsoft.com.tr
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