The data for "Empirical evaluation of S-band radar polarimetric response to surface rock abundance across the lunar highlands and maria"

README % =========================================================================% Project: "Empirical evaluation of S-band radar polarimetric response to% surface rock abundance across the lunar highlands and maria"% Author: Edgard G. Rivera-Valentín% Institution: Johns Hopkins Applied Physics Laboratory% Email: [e-mail]% ORCID: 0000-0002-0786-7307% Date: 2026 June 5% ========================================================================= % =========================================================================% Licenses:%% Any software provided in this repository is licensed under the MIT License,% detailed below and within this archive.%% Any data provided in this repository is licensed under Creative Commons% Attribution 4.0 International, detailed within this archive.%% MIT License%% Copyright (c) 2026 The Johns Hopkins University Applied Physics Laboratory LLC%% Permission is hereby granted, free of charge, to any person obtaining a copy% of this software, data, and associated documentation files (the "Software"),% to deal in the Software without restriction, including without limitation% the rights to use, copy, modify, merge, publish, distribute, sublicense,% and/or sell copies of the Software, and to permit persons to whom the% Software is furnished to do so, subject to the following conditions:%% The above copyright notice and this permission notice shall be included in% all copies or substantial portions of the Software.%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN% THE SOFTWARE.%% ADDITIONAL LICENSING INFORMATION:% Any reuse of the figures and data provided in this repository must abide by% the copyright policy of the American Astronomical Society Journals:% https://journals.aas.org/article-charges-and-copyright/#AAS_material%% ========================================================================= % =========================================================================% Description:%% This repository contains the data products and MATLAB code used to% regenerate the figures associated with the manuscript:%% Title = Empirical evaluation of S-band radar polarimetric response to% surface rock abundance across the lunar highlands and maria% DOI = 10.3847/PSJ/ae6fa4%% This repository includes:%% (1) Data.mat, which contains processed figure-ready products and is not % intended to replace the original mission archive products used in the study. %% (2) MakeFigures.m, a MATLAB script that reproduces all manuscript figures% using the variables stored in Data.mat.%% (3) A folder containing .png versions of all manuscript figures for% quick reference and comparison.%% The archived data are intended to support figure reproduction. % All Mini-RF data utilized in this work are publicly available on the NASA % Planetary Data System Geoscience Node % https://pds-geosciences.wustl.edu/missions/lro/mrf.html, specifically the % Map-projected calibrated data (DOI = 10.17189/1520649). All LRO Diviner-derived % rock abundance data is available on the NASA Planetary System Geosciences node% https://pds-geosciences.wustl.edu/missions/lro/diviner.html% specifically the Map-projected calibrated data (DOI = 10.17189/wj0s-w188).%% Some of the published plots make use of colormaps by Liu (2023)% https://www.mathworks.com/matlabcentral/fileexchange/120088-200-colormaps% To abide by the license, figures produced by this script do not make use of the % Liu (2023) colormaps. Colors used here make use of Matlab colormaps. % Users may download and use the Liu (2023) colormaps at Mathworks.% ========================================================================= % =========================================================================% Data.mat Variable Definitions:%% Data.mat contains processed data products, summary statistics, map layers,% scatter plot data, and plotting support variables required by MakeFigures.m.%% The variable groups are:%% Highland_Polarimetry% Structure array containing binned radar polarimetric behavior across% lunar highlands as a function of rock abundance and incidence angle.% Includes:% CPR = circular polarization ratio% SC = same-sense backscatter% OC = opposite-sense backscatter% Red = m-χ red component% Green = m-χ green component% Blue = m-χ blue component% Each field includes:% Median = median value in each rock abundance bin% Lo / Hi = lower and upper uncertainty bounds% RA_centers = rock abundance bin centers% IncidenceAngle_edges = incidence-angle bin boundaries%% Mare_Polarimetry% Structure array equivalent to Highland_Polarimetry but for lunar maria.% Includes the same polarimetric quantities and summary statistics, with% additional compositional binning:% TiO2_edges = mare compositional bin boundaries used in the analysis%% CPR_vs_RA_Spearman% Spatial map of Spearman rank correlation coefficient between CPR and% rock abundance.%% xTickPix, yTickPix, lon, lat% Axis-support variables used to label the correlation map in geographic% coordinates.%% BrunoMap_Stack% Co-registered image stack for Giordano Bruno crater region.% Layers include:% Layer 1 = WAC optical basemap% Layer 2 = rock abundance map% Layer 3 = CPR map% Layer 4 = Spearman correlation map%% EimmartMap_Stack% Equivalent image stack for the Eimmart A crater region.%% Bruno_Scatter% Scatterplot-ready data for Giordano Bruno crater analysis, grouped by:% Outside = randomly selected CPR and RA pairs outside of the crater% of interest% Inside = randomly selected CPR and RA pairs inside of the crater% of interest% NoCor = CPR and RA samples extracted from locations where the local % Spearman rank correlation coefficient lies between -0.6 and 0.6% HCorr = CPR and RA samples extracted from locations where the local % Spearman rank correlation coefficient greater than 0.6% LCorr = CPR and RA samples extracted from locations where the local % Spearman rank correlation coefficient less than -0.6 %% Eimmart_Scatter% Equivalent scatterplot dataset for Eimmart A.%% BrunoPolarimetry% Polarimetric summary statistics for Giordano Bruno crater subsets,% separated into inside and outside terrain classes. Follows the same% structure as the Highland_Polarimetry structure variable. %% EimmartPolarimetry% Equivalent polarimetric summary structure for Eimmart A.%% ========================================================================= % =========================================================================% File Formats:%% This archive includes several file formats:%% .m file% MATLAB script file. Plain text, readable in any text editor and% executable in MATLAB.%% .mat file% MATLAB binary data file used for storing variables and structures.% Can also be read outside MATLAB, for example in Python using:% https://docs.scipy.org/doc/scipy/reference/generated/scipy.io.loadmat.html%% .png file% Portable Network Graphic image file used for archived figure outputs.%% =========================================================================