R-scripts for Generation of 5, 8 and 16 Random Sampling Points Within Predefined Rectangles [article]

Juanxia He, Xiaoyuan Geng
2022 Zenodo  
Source web page: https://www.globalgeochemicalbaselines.eu/content/185/ebook-r-scripts-for-generation-of-5,-8-and-16-random-sampling-points-/ SYNOPSIS The Global Geochemical Reference Network consists in total of 19,833 grid cells of 160x160 km that cover the whole globe. The land surface of the Earth is covered by 7356 grid cells (Global Terrestrial Network, GTN), and the marine surface by 12,477 grid cells (Global Marine Network, GMN). Planning the sampling campaigns in both realms requires
more » ... e generation of random sampling points within each of the 160x160 km grid cell. For this purpose, three R-scripts were written for the generation of 5-, 8- and 16-random sampling points within each 160x160 km grid cell. The three R-scripts can be used to generate random sampling points within any other size rectangular grid cell. This publication provides the instructions for using the three R-scripts, the format of the input and output files, and the availability of the executable files, as well as the output files, from the website of the IUGS Commission on Global Geochemical Baselines. The URL of the pdf file is: https://www.globalgeochemicalbaselines.eu/datafiles/file/He_Geng_2022_IUGS-CGGB_R-scripts_for_generation_of_5-8-16_random-sampling-points.pdf. Supplementary material: The following files can be downloaded from different web pages of the IUGS Commission on Global Geochemical Baselines:- (a) Executable R-scripts: randomSampling5PointsOnGrids.R (R script for the generation of 5 random points). randomSampling8PointsOnGrids.R (R script for the generation of 8 random points). randomSampling16PointsOnGrids.R (R script for the generation of 16 random points). The source code of the 5, 8 and 16 random sampling points are in Appendices 1, 2 and 3, respectively. The three executable R-scripts for the generation of 5-, 8- and 16-random points in predefined rectangles over the te [...]
doi:10.5281/zenodo.7307201 fatcat:qve3zkjk7ncg3fkspqgyioq6xm