Diverse patterns of pebbles on sand on Mars and Earth

# Clasts-Pattern-MarsThis file contains the data and the codes used in:`Z. Zhu, B. Hallet, A. A. Sipos, G. Domokos, Q.-X. Liu, "Diverse patterns of pebbles on sand on Mars and Earth" arXiv [Preprint] (2023). https://doi.org/10.48550/arXiv.2312.13818`It is sorted by the figures in the article, so there may be duplicates in different folders.The data and code list reads as follows: codes, FIG_xx_yy, MSL image raw data, and Gobi image raw data, where xx and yy represent the figure number and data source, respectively. `density_fluctuation.m` :Two-dimensional density_fluctuation of a set of points.`struct_factor_sq.m` :Two-dimensional static structure factor of a set of points.`clastsrun.m` : individual-based model of the clasts movements on aeolian sands written in MATLAB 2019a.`spectral2D.m` :Two-dimensional spectral analysis of an image file, from http://www.nioo.knaw.nl/homepages/koppel`main.m` :Computation of obeserved data and possion point process in Fig.2.`rippleformation.m` :sand dune model of Werner 1995.`sinuosity.m` :Mean sinuosity of the sand ripples from a binary image.`plot*.m` :Plot of the figure in each folder.`powerspectrum2d.m` :Two-dimensional powerspectrum of an image file.`DJI_*.JPG` :Photos taken by DJI drones at the Gobi desert.# Dataset`MSL image Raw data` :Mars images in Gale Crater downloaded from https://mars.nasa.gov/msl/home/.`*.csv` and `*.mat`:files that save the results of the analyses in each folder for further ploting used in main figures and SI figures.`Gobi image Raw data` :Images of Gobi clasts were collected from Alxa Left Banner. `Movies ripple migration` :Images and movies show the spatial scale and migration speed of ripples alongside Gobi clasts in Alxa Left Banner. Clasts-Pattern-Mars-code.zip includes all code to produce the main figures within main text.