NDLI: Comparison of Various Gridding Methods

Content Provider	Springer Nature Link
Author	Papp, G. Battha, L. Kalmár, J. Závoti, J. Nagy, D. Franke, R.
Copyright Year	1999
Abstract	A comparison of various gridding procedures is carried out using a model gravity field. This model is produced by a causative body of 64 rectangular prisms, for which exact field values can be calculated everywhere. The following methods were used in the comparisons: kriging, linear interpolation along the shortest chord, least squares approximation with normal vector, surface fitting under tension, Franke’s local thin plate spline, least squares collocation, collocation with empirical covariance function and interpolation of scattered data by Franke’s weights. Two different input data sets, consisting of 800 and 480 randomly distributed points were used in the tests. For each method, computed values on a 4 km grid (676 points) were generated for comparisons. The results of the investigations show that simple numbers such as presented in the tables are not sufficient for critical comparison of the various gridding algorithms but contour maps of output are needed.
Starting Page	41
Ending Page	51
Page Count	11
File Format	PDF
ISSN	12178977
Journal	Acta Geodaetica et Geophysica Hungarica
Volume Number	34
Issue Number	1-2
e-ISSN	15871037
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-08-22
Publisher Institution	Quarterly of the Hungarian Academy of Sciences
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	approximation gravity field contour maps Geophysics/Geodesy gridding algorithm
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geology Geophysics

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