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(36) Spherical gridding using Renka’s algorithms — GMT …

WebGMT Map Projections. GMT implements more than 30 different projections. They all project the input coordinates longitude and latitude to positions on a map. In general, x’ = f (x,y,z) and y’ = g (x,y,z), where z is implicitly given as the radial vector length to the (x,y) point on the chosen ellipsoid. The functions f and g can be quite ... Webpygmt.surface. Grids table data using adjustable tension continuous curvature splines. Surface reads randomly-spaced (x, y, z) triplets and produces gridded values z (x,y) by solving: where t is a tension factor between 0 and 1, and ∇ indicates the Laplacian operator. Takes a matrix, (x, y, z) triplets, or a file name as input. the aroma pod

sphinterpolate - joa-quim.github.io

Websphinterpolate reads one or more ASCII [or binary] files (or standard input) containing lon, lat, z and performs a Delaunay triangulation to set up a spherical interpolation in tension. … WebThe code also calls GMT functions (blockmedian, sphinterpolate, grdmask, gmtselect, grdtrack) assuming a GMT version 5 syntax. The file environment.yml can be used to create a virtual environment that contains all these modules using conda. The exceptions are pygplates and PlateTectonicTools, which must be added manually. Further Reading WebThe weighting function and the averaging used is given by: w ( r i) = w i 1 + d ( r i) 2, d ( r) = 3 r R, z ¯ = ∑ i n w ( r i) z i ∑ i n w ( r i) where n is the number of data points that satisfy the selection criteria and r i is the distance from the node to the i ’th data point. the aroma of tea