**This code allows to obtain the polarization parameters generated in the paper.**
This component contains the codes used to process SAC data and obtain the mapped polarization parameters at each station.
The folder contains:
1. The *polar_time_azr.m* file, which can be run to obtain the output files.
2. Several SAC files with populated header; the name of each file contains the origin time, station, and component of motion.
3. A folder containing the Circular Statistics Toolbox 2012a from Berens P., as retrieved at on August 1, 2021 from MATLAB Central File Exchange (https://www.mathworks.com/matlabcentral/fileexchange/10676-circular-statistics-toolbox-directional-statistics).
4. Two routines to process SAC files (lh_mod.m and rsac_mod.m,), edited from https://github.com/IPGP/splitlab/tree/master/SplitLab1.9.0/Saclab.
5. Two functions created to compute the covariance matrix (cov_m) and filter the signal (filtSignal.m)/
*Outputs*
The primary output is the excel file (*statistics_pol.xls*) corresponding to those also contained in this project (see the *Results* component).
The secondary output are *.dat files, each file name contains the station name and the frequency. In each file the columns correspond to time, rectilinearity, azimuth, and dip.
*Example run:*
Enter the folder and run the primary file. The processing time is ~3s.
