Geometry package not working

[Mishal0488]

Hi Guys

I am currently developing a ship stability tool using Octave. 
The tool is based on the finite element method however due to the nature of
ship stability I require the use of the centroid function.

Everytime I try and use the function I get the error presented in the image.

Thye version which I am using is 4.4.1
It is currently difficult for me to use the most recent version due to the
IP policy in the office.

<https://octave.1599824.n4.nabble.com/file/t373111/Image.png> 



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