Spatial weighting given a set of pionts on the unit sphere.
The weights are calculated based on geographical distribution of points. The weighting strategy includes:
Please consider citing this paper if you used it in your research project:
Youyi Ruan, Wenjie Lei, Ryan Modrak, Rıdvan Örsvuran, Ebru Bozdağ, Jeroen Tromp, Balancing unevenly distributed data in seismic tomography: a global adjoint tomography example, Geophysical Journal International, Volume 219, Issue 2, November 2019, Pages 1225–1236, https://doi.org/10.1093/gji/ggz356