This is my task and here is code:
% Load the x-y-z positions into the variable R
load datafile.mat
m = 1.2; % particle mass in kg

% Find the center of mass location in a row vector rcm
rcm = mean(R);

% Find the moment of inertia matrix I, a 3-by-3 matrix

Ixx = sum(m*(R(:,2).^2+R(:,3).^2));
Iyy = sum(m*(R(:,1).^2 + R(:,3).^2));
Izz = sum(m*(R(:,1).^2 + R(:,2).^2));

Ixy = -sum(m * R(:,1) .* R(:,2));
Ixz = -sum(m * R(:,1) .* R(:,3));
Iyz = -sum(m * R(:,2) .*R(:,3));

% Composite main inertia matrix I
I = [ Ixx, Ixy, Ixz;
Ixy, Iyy, Iyz;
Ixz, Iyz, Izz ];

% Find the principal moment of inertia

[~,II] = eig(I);
and the errors are

I tried many different methods to solve this but non of them worked :/, thanks for any helpThis is my task and here is code:
% Load the x-y-z positions into the variable R
load datafile.mat
m = 1.2; % particle mass in kg

% Find the center of mass location in a row vector rcm
rcm = mean(R);

% Find the moment of inertia matrix I, a 3-by-3 matrix

Ixx = sum(m*(R(:,2).^2+R(:,3).^2));
Iyy = sum(m*(R(:,1).^2 + R(:,3).^2));
Izz = sum(m*(R(:,1).^2 + R(:,2).^2));

Ixy = -sum(m * R(:,1) .* R(:,2));
Ixz = -sum(m * R(:,1) .* R(:,3));
Iyz = -sum(m * R(:,2) .*R(:,3));

% Composite main inertia matrix I
I = [ Ixx, Ixy, Ixz;
Ixy, Iyy, Iyz;
Ixz, Iyz, Izz ];

% Find the principal moment of inertia

[~,II] = eig(I);
and the errors are

I tried many different methods to solve this but non of them worked :/, thanks for any help This is my task and here is code:
% Load the x-y-z positions into the variable R
load datafile.mat
m = 1.2; % particle mass in kg

% Find the center of mass location in a row vector rcm
rcm = mean(R);

% Find the moment of inertia matrix I, a 3-by-3 matrix

Ixx = sum(m*(R(:,2).^2+R(:,3).^2));
Iyy = sum(m*(R(:,1).^2 + R(:,3).^2));
Izz = sum(m*(R(:,1).^2 + R(:,2).^2));

Ixy = -sum(m * R(:,1) .* R(:,2));
Ixz = -sum(m * R(:,1) .* R(:,3));
Iyz = -sum(m * R(:,2) .*R(:,3));

% Composite main inertia matrix I
I = [ Ixx, Ixy, Ixz;
Ixy, Iyy, Iyz;
Ixz, Iyz, Izz ];

% Find the principal moment of inertia

[~,II] = eig(I);
and the errors are

I tried many different methods to solve this but non of them worked :/, thanks for any help moment of inertia, matrix MATLAB Answers — New Questions

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