I want to run the SGP4 propagator for the ISS (ID = 25544) I got from spacetrack.org in MATLAB. I don't know where to get the inputs of the function. Where do I get the inFile and outFile that is mentioned in the following function. % Purpose: % This program shows how a Matlab program can call the Astrodynamic Standard libraries to propagate % satellites to the requested time using SGP4 method. % % The program reads in user's input and output files. The program generates an % ephemeris of position and velocity for each satellite read in. In addition, the program % also generates other sets of orbital elements such as osculating Keplerian elements, % mean Keplerian elements, latitude/longitude/height/pos, and nodal period/apogee/perigee/pos. % Totally, the program prints results to five different output files. % % % Usage: Sgp4Prop(inFile, outFile) % inFile : File contains TLEs and 6P-Card (which controls start, stop times and step size) % outFile : Base name for five output files   % Example too run this application: >>Sgp4Prop('./input/rel14.inp', 'test.out') function Sgp4Prop(inFile, outFile) fprintf('Program starts.\n'); tStart = tic;   EPSI = 0.00050; % TIME TOLERANCE IN SEC. if(nargin ~= 2) fprintf('Error in number of parameters passed. Please see the usage.\n\n'); fprintf('Usage : Sgp4Prop(inFile, outFile)\n'); fprintf('inFile : File contains TLEs and 6P-Card (which controls start, stop times and step size)\n'); fprintf('outFile : Base name for five output files\n'); error('myApp:argChk', 'Wrong number of input arguments'); end

Elements Of Electromagnetics
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I want to run the SGP4 propagator for the ISS (ID = 25544) I got from spacetrack.org in MATLAB. I don't know where to get the inputs of the function. Where do I get the inFile and outFile that is mentioned in the following function.

% Purpose:
% This program shows how a Matlab program can call the Astrodynamic Standard libraries to propagate
% satellites to the requested time using SGP4 method.
%
% The program reads in user's input and output files. The program generates an
% ephemeris of position and velocity for each satellite read in. In addition, the program
% also generates other sets of orbital elements such as osculating Keplerian elements,
% mean Keplerian elements, latitude/longitude/height/pos, and nodal period/apogee/perigee/pos.
% Totally, the program prints results to five different output files.
%
%
% Usage: Sgp4Prop(inFile, outFile)
% inFile : File contains TLEs and 6P-Card (which controls start, stop times and step size)
% outFile : Base name for five output files
 
% Example too run this application: >>Sgp4Prop('./input/rel14.inp', 'test.out')
function Sgp4Prop(inFile, outFile)
fprintf('Program starts.\n');
tStart = tic;
 
EPSI = 0.00050; % TIME TOLERANCE IN SEC.
if(nargin ~= 2)
fprintf('Error in number of parameters passed. Please see the usage.\n\n');
fprintf('Usage : Sgp4Prop(inFile, outFile)\n');
fprintf('inFile : File contains TLEs and 6P-Card (which controls start, stop times and step size)\n');
fprintf('outFile : Base name for five output files\n');
error('myApp:argChk', 'Wrong number of input arguments');
end
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