Calculate volume of STL model by height

Hello I want to measure volume of STL model by height. Is there any way to do it?

Answer 1

[DGM]

An example for a closed surface:

https://www.mathworks.com/matlabcentral/answers/2104931-how-to-find-area-and-volume-from-a-stl-file

Not sure why "by height" matters here, unless it's not closed. If it's not closed, then there's no point in trying to calculate anything until the rest of the problem is defined.