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Title	MAXIMA: software to determine local maxima from gridded data
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Licence	Please note the adoption of the Open Government Licence - Canada supersedes any previous licences.
Author	Dumont, R; Bardossy, Z; Miles, W
Source	Geological Survey of Canada, Open File 7934, 2015, 11 pages, https://doi.org/10.4095/296957 Open Access
Year	2015
Publisher	Natural Resources Canada
Document	open file
Lang.	English
Media	on-line; digital
File format	readme
File format	pdf; rtf; gx
Subjects	geophysics; computer applications; software; magnetic surveys; magnetic surveys, airborne; MAXIMA; Geosoft
Illustrations	geophysical images; plots
Program	GEM2: Geo-mapping for Energy and Minerals Geological Map Flow
Released	2015 08 06
Abstract	MAXIMA is a Geosoft GX implementation of a method of identifying local maxima from gridded data described by Blakely and Simpson (1986). The routine determines local maxima in 1, 2, 3, or 4 directions. The position of the local maximum value is calculated from 9 local grid cells and is an improvement on methods using grid cell centres as the position of the maxima. Local maxima can be discriminated by a user supplied minimum input grid value. The output maxima are written to a Geosoft GDB file.
Summary	(Plain Language Summary, not published) MAXIMA provides a method of identifying local maxima from gridded geophysical data. Input gridded data can be filtered so that a local maximum represents a boundary between sources with different physical properties. The local maxima aid the interpretation of geophysical data by marking the boundaries of geophysical domains. The routine determines local maxima in 1, 2, 3, or 4 directions. The position of the local maximum value is calculated from 9 local grid cells and is an improvement on methods using grid cell centres as the position of the maxima. Local maxima can be discriminated by a user-supplied minimum input grid value.
GEOSCAN ID	296957