DISTORTION ANALYSIS OF MAP PROJECTIONS

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Tarih

2010

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Yayıncı

INT SCIENTIFIC CONFERENCE SGEM

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

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. 5 degrees x5 degrees 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.

Açıklama

10th International Multidisciplinary Scientific GeoConference SGEM 2010 -- JUN 20-26, 2010 -- Albena, BULGARIA

Anahtar Kelimeler

Cartography, Map Projections, Map Projection Deformations, Tissot Indicatrix, Deformation Analysis

Kaynak

10TH INTERNATIONAL MULTIDISCIPLINARY SCIENTIFIC GEOCONFERENCE: SGEM 2010, VOL I

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