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matlab
23 days ago
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```clc;
clear;
% Read the data using importdata
data = importdata('iss_p_v2.txt');

% Preallocate a cell array to store the separated values
separatedData = cell(numel(data), 7);

% Iterate through the imported data, split by spaces, and store in the separatedData cell array
for i = 1:numel(data)
row = data{i}; % Access each row
values = strsplit(row); % Split the row by spaces
separatedData(i, :) = values; % Store the separated values in the new cell array
end

Time = separatedData(:,1);
Time = datetime(Time, 'InputFormat', 'yyyy-MM-dd''T''HH:mm:ss.SSS');

separatedData(:, 1) = [];
X = separatedData(:,1);
Y = separatedData(:,2);
Z = separatedData(:,3);
position = [X, Y, Z];
position  = str2double(position);

VX = separatedData(:,4);
VY = separatedData(:,5);
VZ = separatedData(:,6);
velocity = [X, Y, Z];
velocity = str2double(velocity);

% positionData = timetable(position,'TimeStep',seconds());
% velocityData = timetable(velocity,'TimeStep',seconds());
num_rows = size(position, 1); % Get the number of rows

r_eci = zeros(num_rows, 3); % Preallocate r_eci with the same number of rows
v_eci = zeros(num_rows, 3); % Preallocate v_eci with the same number of rows

utc = [2021 11 22 12 0 0];

for i = 1:num_rows
[r_eci(i, :), v_eci(i, :)] = eci2ecef(utc, position(i, :), velocity(i, :));
end

positionData = timetable(Time,r_eci);
velocityData = timetable(Time,v_eci);

% startTime = datetime(2021,11,22,12,0,0);
% stopTime = startTime + days(30);
%sampleTime = 60; % seconds
sc = satelliteScenario;
ISS = satellite(sc,positionData,velocityData,"CoordinateFrame","ecef");
v = satelliteScenarioViewer(sc);
play(sc);```