MATLAB: Calculate the Center of Gravity

center of gravity matrix class

Example with 3 classes and 3 variables : It is assumed that there was three quantitative variables noted Y1, Y2, Y3 and a quantitative variable T to K = 3 terms on a sample of seven individuals. The results obtained are as follows:

How can i calculate the Center of Gravity of every class ???

suppose that we have a matrix M

Best Answer

Center of gravity with respect to individus(i) or with respect to ti?

Regardless, it's

cog = sum(x .* y) / sum(y);

where x is either the individus(i) array or the ti array.

Related Solutions

MATLAB: How to properly sum 3D matrixes

Use this function:

function M=sumnd(M,dim)
s=size(M);
M=permute(M,[setdiff(1:ndims(M),dim),dim]);
M=reshape(M,[],s(dim));
M=sum(M,2);
s(dim)=1;
M=reshape(M,s);
end

Code:

A=sumnd(M,3) ;
A = simplify(A) ;

Result:

[ x1*y1*(z1 + z2 + z3), x1*y2*(z1 + z2 + z3), x1*y3*(z1 + z2 + z3)]
[ x2*y1*(z1 + z2 + z3), x2*y2*(z1 + z2 + z3), x2*y3*(z1 + z2 + z3)]
[ x3*y1*(z1 + z2 + z3), x3*y2*(z1 + z2 + z3), x3*y3*(z1 + z2 + z3)]

MATLAB: Is there a solution to use “circcirc” with continuous variable as radius

Hi Miro,

You may want to use for or while loops. Please find description here. The exact code would vary depending on which radius you want to change at what time.

Best Answer

Related Solutions

MATLAB: How to properly sum 3D matrixes

MATLAB: Is there a solution to use “circcirc” with continuous variable as radius

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